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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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I am now the proud and absolutely delighted owner of a Pioneer plasma TV.
The first thing I watched was "Amadeus", and though my expectations were unnaturally high, the Pioneer handily exceeded them. Simply unbelievable. The set has a two-year in-home warranty on parts and labor, which strikes me as a bit short for such a product. (It really "should" be three years. Five would be even nicer.) I can get an extended warranty for $1000. Said warranty extends Pioneer's warranty by only two years, but it is a complete replacement warranty. Should the set have three service problems of any kind (even minor ones, and they needn't be the same), or any unrepairable problem, the set will be replaced outright. Of course, in a little less than a year, there won't be any more Pioneer plasmas to replace mine with. The installers said there had been major problems with about 5% of the Pioneers. That's not a high number, but the 1 in 20 probability of losing such a major investment leaves me a bit uncomfortable. I don't feel like laying out another kilobuck. And though my experiences with consumer electronics over the past 45 years has been overwhelmingly positive (I've never had anything expensive break down -- other than my brand K amplification), I don't like the idea of getting a bit more than 2 years' use out of a product and then having to toss it (either because the parts aren't available, or I can't afford the repair). This is what is called a dilemma ("two horns", in Greek). Any views on the reliability of Pioneer plasma? Thanks in advance. |
#2
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On Sun, 22 Mar 2009 06:55:50 -0700, "William Sommerwerck"
put finger to keyboard and composed: Any views on the reliability of Pioneer plasma? FWIW, I notice that LG plasma TVs have a 1 year warranty whereas their LCD TVs have 3 years. This would suggest that plasma panels are inherently less reliable than LCDs. As you have said, Pioneer appear to be getting out of the TV business: http://hdguru.com/pioneer-to-exit-the-tv-business/366/ Last year they began outsourcing production of plasma panels to Panasonic/Matsu****a, so a more appropriate question might be the reliability of Panasonic panels. On the plus side, I notice that Pioneer will sometimes sell you individual ICs (eg scan IC) rather than the whole PCB. You may want to check some parts prices he http://parts.pioneerelectronics.com/...755870KPZT%2DP This article recommends against an extended warranty: http://www.mysimon.com/4002-9375-6309568.html "Our most recent survey found few repair problems during the first three years of use for plasma sets from Panasonic, Pioneer, and Samsung. ... Our surveys of thousands of consumers show that plasma flat-panel TVs have been very reliable for the first three years -- the time covered by many extended warranties -- so there's little sense in spending several hundred dollars for such a warranty." - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
#3
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On Sun, 22 Mar 2009 06:55:50 -0700, "William Sommerwerck"
wrote: I don't feel like laying out another kilobuck. And though my experiences with consumer electronics over the past 45 years has been overwhelmingly positive (I've never had anything expensive break down -- other than my brand K amplification), I don't like the idea of getting a bit more than 2 years' use out of a product and then having to toss it (either because the parts aren't available, or I can't afford the repair). According to Wikipedia, the half life of a plasma display is about 100,000 hrs. That's 27 years at 10 hrs per day. That's the time to where the display brightness drops to half. Have you light meter ready. http://en.wikipedia.org/wiki/Plasma_display There's quite a bit of good info in that article on plasma tv. My very limited experience with plasma displays is that the failures are usually in the electronics or power supply, not the tube. However, the tube will be prematurely ruined by leaving it on the program guide causing burn-in. Overheating, due to in the wall or cabinet installations that lack sufficient ventilation is another culprit. Of course, the big tube is fairly fragile and will not survive the impact of the kids indoor baseball game. The actual failure curve for a system has peaks at the beginning and end of life, with a flat curve in between. The initial peak is usually manufacturing defects and are covered under the warranty. Those usually show up within a year. At the end of life, components that degrade due to temperature effects or thermal cycling, will cause failures. In between, a random assortment of failures might occur, but the rate is very low. The exception is the failure of Low-ESR capacitors, which tend to show up after several years. The problem can be catastrophic as there may be dozens of identical caps in your TV, all with the same problem. http://www.badcaps.net http://www.capacitorlab.com/low-esr-capacitor-manufacturers/ About 8 years after the counterfeit electrolyte and counterfeit capacitor problems were discovered, I'm still seeing brand new equipment with volcanic electrolytics. The big problem with repairing a plasma TV is the size and weight. It just can't be dragged to the service shop or warranty repair station easily or economically. So, if a trivial part fails, it's a truck roll and a major production. TV repairmen still make house calls, but you'll pay handsomely for the effort. Or, you can drag it down to the few remaining repair shops. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#4
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"Jeff Liebermann" wrote in message
... On Sun, 22 Mar 2009 06:55:50 -0700, "William Sommerwerck" wrote: I don't feel like laying out another kilobuck. And though my experiences with consumer electronics over the past 45 years has been overwhelmingly positive (I've never had anything expensive break down -- other than my brand K amplification), I don't like the idea of getting a bit more than 2 years' use out of a product and then having to toss it (either because the parts aren't available, or I can't afford the repair). My very limited experience with plasma displays is that the failures are usually in the electronics or power supply, not the tube. However, the tube will be prematurely ruined by leaving it on the program guide causing burn-in. Overheating, due to in the wall or cabinet installations that lack sufficient ventilation is another culprit. Of course, the big tube is fairly fragile and will not survive the impact of the kids indoor baseball game. The actual failure curve for a system has peaks at the beginning and end of life, with a flat curve in between. The initial failures are called "infant mortality". The initial peak is usually manufacturing defects and are covered under the warranty. Those usually show up within a year. At the end of life, components that degrade due to temperature effects or thermal cycling, will cause failures. In between, a random assortment of failures might occur, but the rate is very low. I'll have to ask Magnolia what sorts of repairs those 5% comprise. The only thing I'm worried about is the display panel. And although the Federal government requires electronic parts to be available for 10 years after end of manufacturing, I wonder whether Pioneer will have any stock of panels after 2012. The government does not enforce these laws very well (if at all. Picky point... "Degrade" is a transitive verb, not reflexive. You mean "deteriorate" or "fail". The big problem with repairing a plasma TV is the size and weight. It just can't be dragged to the service shop or warranty repair station easily or economically. So, if a trivial part fails, it's a truck roll and a major production. TV repairmen still make house calls, but you'll pay handsomely for the effort. Or, you can drag it down to the few remaining repair shops. According to Magnolia, warranties include in-home service. |
#5
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On 22 mar, 14:55, "William Sommerwerck"
wrote: Any views on the reliability of Pioneer plasma? Thanks in advance. The pioneers I used to see were all ITT chasis, back in the day of the CRT! Personally, I don't think it was wise to invest in this set for various reasons. a)the manufacturer is getting out of the business which is bad news for after sales support, parts etc. b) production of plasma sets is to be ceased if it hasn't been already. As such, it could even be seen, in tech terms, as 'old technology'. c)fragility and screen burn problems mentioned above. :-/ B |
#6
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b) production of plasma sets is to be ceased if it hasn't been
already. As such, it could even be seen, in tech terms, as 'old technology'. I'm curious as to where you got this information. It's amazing how an "old-technology" set is generally considered to be the best direct-view TV made. |
#7
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![]() "b" wrote in message ... On 22 mar, 14:55, "William Sommerwerck" wrote: Any views on the reliability of Pioneer plasma? Thanks in advance. The pioneers I used to see were all ITT chasis, back in the day of the CRT! Personally, I don't think it was wise to invest in this set for various reasons. a)the manufacturer is getting out of the business which is bad news for after sales support, parts etc. b) production of plasma sets is to be ceased if it hasn't been already. As such, it could even be seen, in tech terms, as 'old technology'. c)fragility and screen burn problems mentioned above. :-/ B Screen burn is not so much of a problem as it was in the early days. Most sets have a service mode which 'washes' the panel, and in many cases, will remove all but the most 'burnt-in' burns. On a slightly different note, anyone heard what point SED technology has reached now ? I believed that there was some legal issue between manufacturers at one point, but that it had been resolved, and large screen SED based sets were due to be hitting the market by the end of last year. Can't say that I've seen any yet. I wonder whether it has become a 'shelved' technology as a result of the economic downturn, and the strong foothold that LCD has now established in the market ? Arfa |
#8
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Screen burn is not so much of a problem as it was in the
early days. Most sets have a service mode which "washes" the panel, and in many cases, will remove all but the most "burnt-in" burns. After two days of hot-n-heavy viewing (Saturday and Sunday), I turned on the "wash" mode and let it run for an hour. On a slightly different note, anyone heard what point SED technology has reached now ? I believed that there was some legal issue between manufacturers at one point, but that it had been resolved... That's what I've heard. .... and large-screen SED-based sets were due to be hitting the market by the end of last year. I'd wanted to wait for SED, but gave up when I heard about the legal wrangling. Given the current economy and the generally strong sales of both plasma and LCD sets, it's unlikely we'll see SED sets that soon, if ever. Can't say that I've seen any yet. I wonder whether it has become a "shelved" technology as a result of the economic downturn, and the strong foothold that LCD has now established in the market? Very likely. On the 3D front... Matsu****a has announced it's working on a frame-sequential 1080-line system that will be generally compatible with existing players and displays. Besides the new stuff, there are lots of classic 3D films: "Creature from the Black Lagoon" (and its first sequel), "The Maze", "House of Wax", "Dial M for Murder", "It Came from Outer Space", "Kiss Me, Kate", "Hondo", and that stinker de tutti stinkers, "Robot Monster". |
#9
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On Tue, 24 Mar 2009 01:16:38 -0000, "Arfa Daily"
wrote: On a slightly different note, anyone heard what point SED technology has reached now ? I believed that there was some legal issue between manufacturers at one point, but that it had been resolved, and large screen SED based sets were due to be hitting the market by the end of last year. Can't say that I've seen any yet. I wonder whether it has become a 'shelved' technology as a result of the economic downturn, and the strong foothold that LCD has now established in the market ? Patience. The patent attorneys must all be fed first. This article covers the technology and legal wrangling (near the bottom): http://answers.google.com/answers/threadview/id/525928.html Personally, I think LED DLP projectors are going to be a winner, mostly because of the (eventual) low cost and small size. After that market is saturated, 3D TV will probably be the next big thing. Apple will probably call the required LCD shutter/viewer glasses the "Eye-Pod" which will display 3D videos while walking down the street and double as a heads-up information display and game machine. The colander helmet docking station is optional. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#10
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![]() One general principle-- the harder the salespeople push for you to buy an item, the higher the profit to them and lousier value to you. In particular, all those places that push for "extended warranties", they can often triple their profit just on the warranty part. And collecting on the warranty can be a real hassle. Not like the smiling attractive people in the glossy warranty brochure, you'll be writing and calling and getting put on hold for months if you try to collect on the warranty. |
#11
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![]() "Jeff Liebermann" wrote in message ... On Tue, 24 Mar 2009 01:16:38 -0000, "Arfa Daily" wrote: On a slightly different note, anyone heard what point SED technology has reached now ? I believed that there was some legal issue between manufacturers at one point, but that it had been resolved, and large screen SED based sets were due to be hitting the market by the end of last year. Can't say that I've seen any yet. I wonder whether it has become a 'shelved' technology as a result of the economic downturn, and the strong foothold that LCD has now established in the market ? Patience. The patent attorneys must all be fed first. This article covers the technology and legal wrangling (near the bottom): http://answers.google.com/answers/threadview/id/525928.html That's interesting. I see that the original question was posted back in 2005, and it looked as though a resolution to the legal problems was expected in fairly short order, back then. But isn't this just typical ? The eco-bollox green mist brigade jump on every dubious 'mis-use' of energy, such as getting 'proper' light bulbs banned world-wide in favour of dreadful substitutes like CFLs, and here we are with a technology that uses half the power of a CRT, a third the power of a plasma panel, and although it doesn't state the ratio with LCDs will be at least a third of those if not less, and which could actually make a big difference, whilst *improving* the picture over the current flat screen technologies, and they let it just fester as a result of one company getting arsey with another ! Makes you wonder who has got an interest in not letting this technology out onto the mass market ... Arfa |
#12
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But isn't this just typical? The eco-bollox green mist brigade jump on
every dubious 'mis-use' of energy, such as getting 'proper' light bulbs banned world-wide in favour of dreadful substitutes like CFLs... Arfa, try putting a CFL in a glass or plastic fixture. You might be pleasantly surprised. Except for the bathroom, where the CFLs are directly exposed (above the mirror), the others are in IKEA fixtures. You can't tell they're not incandescent. They look great. |
#13
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![]() "William Sommerwerck" wrote in message ... But isn't this just typical? The eco-bollox green mist brigade jump on every dubious 'mis-use' of energy, such as getting 'proper' light bulbs banned world-wide in favour of dreadful substitutes like CFLs... Arfa, try putting a CFL in a glass or plastic fixture. You might be pleasantly surprised. Except for the bathroom, where the CFLs are directly exposed (above the mirror), the others are in IKEA fixtures. You can't tell they're not incandescent. They look great. I have. I currently have one in a bathroom 'globe' fitting. It takes a quarter second to start, which although is a very short time, is still long enough for your dumb old brain to think "sod it, the bulb's gone ..." every single time you go in there. After it does start, for the first 20 seconds, the light is like a candle shining through a glass of ****. After that time, the light output ramps up until it is like standing on Venus with the sun at your back. The colour of the light is sick and rancid. I have another in an outside light. During the winter, that is just about giving its full quota of light, by the time it's dawn, and time for it to go off again. I have another in the hallway in a Tiffany style shade. It too takes a quarter second to strike, and again, the light output ramps up over perhaps a minute. The colours of the glass lozenges in the shade shine in a kind of dull way, instead of producing the vibrant colours that you associate with this style of shade, and which you get when the fitting has a normal incandescent bulb fitted. My wife has one in the lamp on her side of the bed. When it's on, the room has a strange 'green' feel to it - even though it's predominantly pink and magnolia. About the best one I have, is in the table light which is about 2 feet away from me right now, and even the light from that has a slightly 'sick' quality about it. All of these lamps are from different manufacturers. I have tried to like them based on the fact that incandescent manufacture is slowly ceasing. I really have. But try as I might, I can't. I don't like the way they perform. I don't like the colour rendering index, and I particularly don't like the utter bollox that the green mist brigade spout about how environmentally friendly they are. They are nothing of the sort. The only positive factor is the energy consumption, which is the only thing about them that is rammed down everyone's throats, and the only factor that Joe Public understands. The many negative factors involved in the manufacture, transport, use and ultimate disposal of them, is conveniently ignored or glossed over. They are not by any stretch of the imagination a 'replacement' technology for incandescent lamps. They are a substitute, and not a very good one at that. Arfa |
#14
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I have. I currently have one in a bathroom 'globe' fitting. It takes a
quarter second to start, which although is a very short time, is still long enough for your dumb old brain to think "sod it, the bulb's gone ..." every single time you go in there. My cheap Chinese CFLs from Home Despot start instantly -- faster than an incandescent. (That's not a joke. They don't "ramp up" the way an incandescent does. Blam, they're on) After it does start, for the first 20 seconds, the light is like a candle shining through a glass of ****. Mine are fairly bright to start, but take about 30 seconds to reach full brightness. The color is okay from the start. The colour of the light is sick and rancid. I have another in an outside light. During the winter, that is just about giving its full quota of light, by the time it's dawn, and time for it to go off again. Not mine. They aren't up to photographic CFLs, but they're close. My wife has one in the lamp on her side of the bed. When it's on, the room has a strange 'green' feel to it - even though it's predominantly pink and magnolia. Those are Really Bad CFLs. It's no wonder you don't like CFLs. You just haven't seen any decent ones. |
#15
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![]() William Sommerwerck wrote: I have. I currently have one in a bathroom 'globe' fitting. It takes a quarter second to start, which although is a very short time, is still long enough for your dumb old brain to think "sod it, the bulb's gone ..." every single time you go in there. My cheap Chinese CFLs from Home Despot start instantly -- faster than an incandescent. (That's not a joke. They don't "ramp up" the way an incandescent does. Blam, they're on) After it does start, for the first 20 seconds, the light is like a candle shining through a glass of ****. Mine are fairly bright to start, but take about 30 seconds to reach full brightness. The color is okay from the start. The colour of the light is sick and rancid. I have another in an outside light. During the winter, that is just about giving its full quota of light, by the time it's dawn, and time for it to go off again. Not mine. They aren't up to photographic CFLs, but they're close. My wife has one in the lamp on her side of the bed. When it's on, the room has a strange 'green' feel to it - even though it's predominantly pink and magnolia. Those are Really Bad CFLs. It's no wonder you don't like CFLs. You just haven't seen any decent ones. Its caused by that 50 Hz European electricity. ;-) -- http://improve-usenet.org/index.html Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages. If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm |
#16
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![]() "Michael A. Terrell" wrote in message ... William Sommerwerck wrote: I have. I currently have one in a bathroom 'globe' fitting. It takes a quarter second to start, which although is a very short time, is still long enough for your dumb old brain to think "sod it, the bulb's gone ..." every single time you go in there. My cheap Chinese CFLs from Home Despot start instantly -- faster than an incandescent. (That's not a joke. They don't "ramp up" the way an incandescent does. Blam, they're on) After it does start, for the first 20 seconds, the light is like a candle shining through a glass of ****. Mine are fairly bright to start, but take about 30 seconds to reach full brightness. The color is okay from the start. The colour of the light is sick and rancid. I have another in an outside light. During the winter, that is just about giving its full quota of light, by the time it's dawn, and time for it to go off again. Not mine. They aren't up to photographic CFLs, but they're close. My wife has one in the lamp on her side of the bed. When it's on, the room has a strange 'green' feel to it - even though it's predominantly pink and magnolia. Those are Really Bad CFLs. It's no wonder you don't like CFLs. You just haven't seen any decent ones. You're right William, because for *me*, I'm dubious that a *decent* one that's readily available, actually exists, If I haven't managed to find one in the several years that I've been trying, then it's a bit of a lost cause. It's a f'kin light bulb for Christ's sake ! I want to be able to just go to my supermarket and buy whatever is there, stick 'em in the fitting, and have light that doesn't give me suicidal tendencies ... (that my eyes can actually read under !) I guess if you don't like 'em, you just don't. A bit like the way that you just don't like some particular brands of audio gear, no matter what others think of them ... :-) And how on earth do you see the light output from an incandescent 'ramp up' ? That really *must* be as a result of that low voltage American electricity .... I can honestly say that I have never in all my years seen a traditional incandescent bulb start slowly enough to be able to see it do so. Possible exception to this is some halogen bulbs in decorative fittings, but as there are not CFLs to directly replace those, it's hard to use them as a comparison. Also, a lot of the low voltage halogens are driven these days by 'electronic transformers' which may well 'soft start', giving the ramping up effect. Even if you have found CFLs over there that satisfy you as to their suitability for the job, that still doesn't address the many negative aspects of them over incandescents, which are conveniently ignored to serve the green lobby's arguments on end-point energy useage. Arfa |
#17
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You're right William, because for *me*, I'm dubious that a *decent* one
that's readily available, actually exists, If I haven't managed to find one in the several years that I've been trying, then it's a bit of a lost cause. It's a f'kin light bulb for Christ's sake ! I want to be able to just go to my supermarket and buy whatever is there, stick 'em in the fitting, and have light that doesn't give me suicidal tendencies ... (that my eyes can actually read under !) I guess if you don't like 'em, you just don't. I disagree strongly. You have GOOD REASONS not to like the ones you've seen. And how on earth do you see the light output from an incandescent 'ramp up' ? That really *must* be as a result of that low voltage American electricity. I have no trouble seeing it. An incandescent bulb takes a fraction of a second to reach full brightness, and this is plainly visible. 220V bubls should be no different. ... I can honestly say that I have never in all my years seen a traditional incandescent bulb start slowly enough to be able to see it do so. That's because you assume they come on "instantly". They don't. Even if you have found CFLs over there that satisfy you as to their suitability for the job, that still doesn't address the many negative aspects of them over incandescents, which are conveniently ignored to servethe green lobby's arguments on end-point energy useage. Such as the fact they use more materials in their manufacture? This has to be weighed against how long they last and how much energy they (don't) use over their lifespan. |
#18
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In article ,
Arfa Daily wrote: And how on earth do you see the light output from an incandescent 'ramp up' ? That really *must* be as a result of that low voltage American electricity ... I can honestly say that I have never in all my years seen a traditional incandescent bulb start slowly enough to be able to see it do so. Although it's a slightly different situation, I've seen the same phenomenon quite easily... in vehicles (cars or trucks) in which some of the rear-facing brake indicator lights are incandescent bulbs and others are LEDs. In this case, when the driver hits the break, the LED indicator comes on instantaneously, while there's an appreciable time lag and a perceptible rise-time in the light from the incandescent bulbs. The latter isn't all that easy to notice if you're looking only at an incandescent bulb... but if you see an incandescent and an LED side-by- side, driven by the same voltage, it's very obvious. -- Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#19
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![]() " Even if you have found CFLs over there that satisfy you as to their suitability for the job, that still doesn't address the many negative aspects of them over incandescents, which are conveniently ignored to servethe green lobby's arguments on end-point energy useage. Such as the fact they use more materials in their manufacture? This has to be weighed against how long they last and how much energy they (don't) use over their lifespan. They have many more manufacturing processes. They use many more processed materials in their construction. It requires many more factories to make the materials for the capacitors, resistors, inductors, semiconductors PCBs, phosphors, and then many factories to make those materials into capacitors, inductors etc. Then all of those components have to be shipped to whoever makes the electronic ballast. Then that has to be shipped to the lamp manufacturer. The glass discharge tube requires a much more complex process to manufacture it, and coat its inside with toxic chemicals, than is needed to make the simple glass globe of a conventional incandescent. Then that too has to be shipped to the lamp manufacturer. When they've finally built the thing, it has to be put in much more substantial packaging than a standard light bulb, because the discharge tube is fragile, and its contents potentially dangerous. Then the whole item, which weighs a lot more than a conventional light bulb, has to be shipped to wherever it's going to be sold. All of the many many processes involved, require workers that need to be got to and from the factories where they work. Then when they're there, they have to be kept warm or cool, lit, and fed. When the lamp has reached the end of its life, it has to be taken to a collection facility, because they are considered to be too dangerous to go into the regular household trash. Aside from that factor, countries within the EU have a mandate to recycle any electronic equipment. And so it all starts again, with shipping, dismantling, recycling and all of the processes and workers which that involves. So no, I'm not talking *just* about the additional materials that are in them. And as an amusing twist of irony, guess what happened to the one in the wife's bedside light tonight ? Yep. That's right. It failed. Totally. 10,000 hours ? Ha ! 6 months tops of 20 minutes per night ... These things are useless ****e. On a stick. Arfa |
#20
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On Thu, 26 Mar 2009 02:22:37 -0000, "Arfa Daily"
wrote: The colour of the light is sick and rancid. I have another in an outside light. During the winter, that is just about giving its full quota of light, by the time it's dawn, and time for it to go off again. I had similar opinions about CFL bulbs for quite a while. They just looked reddish with a color temp of about 2500K. One of my former customers is a lighting store. While working on their machines, I asked if they had any CFL bulbs with a higher color temperature approaching daylight at about 5500K. Nope, but some of the "natural light" bulbs were rated at 3500K, which was worth a try. They looked somewhat better and as an added bonus, didn't blow up after a few weeks of operation. A few months later, the "daylight" series of bulbs arrived at 5000K and up, which were a major improvement. Most of the discount store CFL bulbs are unrated by color temperature. Little wonder as I suspect they use whatever bulbs they can buy from an assortment of vendors. No specs means no consistency. Some of the bulbs I've used have a fairly long turn on time. This bugs me but not enough to be concerned. I've learned to live with the delay. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#21
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On Wed, 25 Mar 2009 18:13:10 -0000, "Arfa Daily"
wrote: Patience. The patent attorneys must all be fed first. This article covers the technology and legal wrangling (near the bottom): http://answers.google.com/answers/threadview/id/525928.html That's interesting. I see that the original question was posted back in 2005, and it looked as though a resolution to the legal problems was expected in fairly short order, back then. Thanks, I didn't notice. The problem usually has nothing to do with the newer technology. It's that the companies involved have not had sufficient time or sales to cover their expenses for the existing technology. It's not until the old technology has run its course, that the new technology can be safely allowed to appear. No company wants to compete with itself. In this case, the big panel LCD technology is still fairly new. Sales of big LCD panels have certainly not hit bottom. I don't have a figure as to how many years LCD technology needs to be around before being replaced by SED. My guess(tm) would be about 8 years total, so from 2005, that would be 2013 before introduction. Ummm... there's also OLED (organic LED) technology, which is really bright, but has problems with limited lifetime (about 5 years) and requires better package sealing: http://en.wikipedia.org/wiki/Organic_light-emitting_diode OLED products are here today: http://www.oqo.com/products/index.html Plasma displays are ruining HF reception at my house. Two of my neighbors have them. When they're on, all I hear on 80 and 40 meters is noise. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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![]() "Jeff Liebermann" wrote in message ... On Thu, 26 Mar 2009 02:22:37 -0000, "Arfa Daily" wrote: The colour of the light is sick and rancid. I have another in an outside light. During the winter, that is just about giving its full quota of light, by the time it's dawn, and time for it to go off again. I had similar opinions about CFL bulbs for quite a while. They just looked reddish with a color temp of about 2500K. One of my former customers is a lighting store. While working on their machines, I asked if they had any CFL bulbs with a higher color temperature approaching daylight at about 5500K. Nope, but some of the "natural light" bulbs were rated at 3500K, which was worth a try. They looked somewhat better and as an added bonus, didn't blow up after a few weeks of operation. A few months later, the "daylight" series of bulbs arrived at 5000K and up, which were a major improvement. Most of the discount store CFL bulbs are unrated by color temperature. Little wonder as I suspect they use whatever bulbs they can buy from an assortment of vendors. No specs means no consistency. Some of the bulbs I've used have a fairly long turn on time. This bugs me but not enough to be concerned. I've learned to live with the delay. It's an odd thing, this CRI and colour temperature. I haven't really been able to figure why I have no problem at all with working under linear flourescents, no matter whether they are white, daylight or warm white, and yet, I find there to be something fundamentally 'wrong' with the light from CFLs, no matter what colour they are. I also have trouble reading under them, but no problem with linear flourescents. Also, the strike up time, and sometimes several attempts at striking of a linear, doesn't bother me a jot, but that brief delay in startup of a CFL bugs the life out of me. Strange .... Today, I bought two new light fittings for my lounge. Each uses G9 halogen bulbs, so I hope that these are going to continue to be around for a while ! Arfa |
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On Mon, 30 Mar 2009 01:49:41 +0100, "Arfa Daily"
wrote: It's an odd thing, this CRI and colour temperature. I haven't really been able to figure why I have no problem at all with working under linear flourescents, no matter whether they are white, daylight or warm white, and yet, I find there to be something fundamentally 'wrong' with the light from CFLs, no matter what colour they are. Probably because you've been accustomed or have adapted to ordinary flourescent lamps, as found in offices, public buildings, and most commercial establishments interested in saving on the cost of electricity. It does take a while as I vaguely recall complaining about the same thing when faced with a flourescent desk lamp at home. I also recall that there was a similar backlash going from gas lamps to electric. Given sufficient exposure and time, methinks you could adapter to CFL bulbs. I also have trouble reading under them, but no problem with linear flourescents. Also, the strike up time, and sometimes several attempts at striking of a linear, doesn't bother me a jot, but that brief delay in startup of a CFL bugs the life out of me. Strange I also had to adapt to reading and working using CFL bulbs. I have a "pole lamp" with 4 screw in lamp sockets. I started with all 4 as incandescent bulbs. I slowly replaced the incandescent bulbs with CFL bulbs. It took about 2 years, but I now have all CFL bulbs, and am fully adjusted to their color temperature. Today, I bought two new light fittings for my lounge. Each uses G9 halogen bulbs, so I hope that these are going to continue to be around for a while ! Dream on. The efficiency police are active in Europe: http://www.telegraph.co.uk/news/worldnews/europe/3174452/Traditional-lightbulbs-banned-by-EU.html -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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It's an odd thing, this CRI and colour temperature. I haven't really been
able to figure why I have no problem at all with working under linear flourescents, no matter whether they are white, daylight or warm white, and yet, I find there to be something fundamentally 'wrong' with the light from CFLs, no matter what colour they are. I also have trouble reading under them, but no problem with linear flourescents. Also, the strike up time, and sometimes several attempts at striking of a linear, doesn't bother me a jot, but that brief delay in startup of a CFL bugs the life out of me. Strange. Wish I had an answer. I have several Lowell "ego" lights that use CFLs with a CRI over 90. You can shoot photos at 5500K, and they come out fine. Either there's something "wrong" with your color vision (which I doubt), or you just haven't seen good CFLs. Believe me, they exist. |
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b wrote:
On 22 mar, 14:55, "William Sommerwerck" Any views on the reliability of Pioneer plasma? Thanks in advance. The pioneers I used to see were all ITT chasis, back in the day of the CRT! ITT/SEL probably, except for the ones that used Philips or Thomson chassis... But that was for the European market. The North American models might come from a different source. I think RPTV's and Plasma sets were made by Pioneer themselves. -- Met vriendelijke groet, Maarten Bakker. |
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William Sommerwerck wrote:
I have no trouble seeing it. An incandescent bulb takes a fraction of a second to reach full brightness, and this is plainly visible. 220V bubls should be no different. If someone doesn't see it, have them looking at a car with LED turn-signals and compare the result to looking at a car with incandescent turn-signals. They will see the difference. -- Met vriendelijke groet, Maarten Bakker. |
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Arfa Daily wrote:
trash. Aside from that factor, countries within the EU have a mandate to recycle any electronic equipment. And so it all starts again, with shipping, dismantling, recycling and all of the processes and workers which that involves. The stuff is usually just crushed and, maybe, if you're lucky, not treated as hazardous waste but indeed post-processed to recover some of the raw materials. -- Met vriendelijke groet, Maarten Bakker. |
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![]() wrote in message ... William Sommerwerck wrote: I have no trouble seeing it. An incandescent bulb takes a fraction of a second to reach full brightness, and this is plainly visible. 220V bubls should be no different. If someone doesn't see it, have them looking at a car with LED turn-signals and compare the result to looking at a car with incandescent turn-signals. They will see the difference. -- Met vriendelijke groet, Maarten Bakker. People keep mentioning car bulbs, but we are comparing apples and oranges here, based on the fact that they are both fruit. One of the reasons that a car bulb is slow to reach full output, is that the filament has to be made thick and robust for enhanced reliability and failure proofing from vibration. That makes it have substantial thermal inertia, so much so that you can indeed see it hot up. On the other hand, high voltage domestic lightbulbs have no such constraints on their filaments, as they are not going on and off all the time like a brake light or indicator, and are not subject to vibration in normal use. This results in the manufacturers being able to design them with a much more delicate filament, with the result that, to all intents and purposes, the ramp up to full output is 'instantaneous'. Arfa |
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![]() wrote in message ... Arfa Daily wrote: trash. Aside from that factor, countries within the EU have a mandate to recycle any electronic equipment. And so it all starts again, with shipping, dismantling, recycling and all of the processes and workers which that involves. The stuff is usually just crushed and, maybe, if you're lucky, not treated as hazardous waste but indeed post-processed to recover some of the raw materials. -- Met vriendelijke groet, Maarten Bakker. All of which makes a mockery of the EU WEEE directive, treatment of hazardous wastes directives, and recycling in general ... Just a load more EU eco-bollox really ! Arfa |
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![]() "Jeff Liebermann" wrote in message ... On Mon, 30 Mar 2009 01:49:41 +0100, "Arfa Daily" wrote: It's an odd thing, this CRI and colour temperature. I haven't really been able to figure why I have no problem at all with working under linear flourescents, no matter whether they are white, daylight or warm white, and yet, I find there to be something fundamentally 'wrong' with the light from CFLs, no matter what colour they are. Probably because you've been accustomed or have adapted to ordinary flourescent lamps, as found in offices, public buildings, and most commercial establishments interested in saving on the cost of electricity. It does take a while as I vaguely recall complaining about the same thing when faced with a flourescent desk lamp at home. I also recall that there was a similar backlash going from gas lamps to electric. Given sufficient exposure and time, methinks you could adapter to CFL bulbs. I also have trouble reading under them, but no problem with linear flourescents. Also, the strike up time, and sometimes several attempts at striking of a linear, doesn't bother me a jot, but that brief delay in startup of a CFL bugs the life out of me. Strange I also had to adapt to reading and working using CFL bulbs. I have a "pole lamp" with 4 screw in lamp sockets. I started with all 4 as incandescent bulbs. I slowly replaced the incandescent bulbs with CFL bulbs. It took about 2 years, but I now have all CFL bulbs, and am fully adjusted to their color temperature. Today, I bought two new light fittings for my lounge. Each uses G9 halogen bulbs, so I hope that these are going to continue to be around for a while ! Dream on. The efficiency police are active in Europe: http://www.telegraph.co.uk/news/worldnews/europe/3174452/Traditional-lightbulbs-banned-by-EU.html Yes Jeff, I'm fully aware of all this eco-bollox nonsense with incandescents, but as far as I am aware, it doesn't affect halogens for which there are no direct replacements, at this point in time. The G9 bulb is about the size of a projector lamp or small headlamp bulb, and nothing else would fit in a socket intended for one. Many many ceiling light fittings this side of the pond are now 'decorative' design pieces as well as being functional, and these invariably use bulbs like the G9 or similar pea types in a halogen format, so unless they are going to render everyone's modern light fittings obsolete, including ones that are on sale right now, I can't see how they can ban this type of bulb. see http://www.focusdiy.co.uk/bin/venda?...n&setpagenum=2 for some examples. (That URL might be a bit long to work correctly from here). The ones I have just bought are the "Dexter" model at the top. Arfa |
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One of the reasons that a car bulb is slow to reach full output, is that
the filament has to be made thick and robust for enhanced reliability and failure proofing from vibration. That makes it have substantial thermal inertia, so much so that you can indeed see it hot up. On the other hand, high voltage domestic lightbulbs have no such constraints on their filaments, as they are not going on and off all the time like a brake light or indicator, and are not subject to vibration in normal use. This results in the manufacturers being able to design them with a much more delicate filament, with the result that, to all intents and purposes, the ramp up to full output is 'instantaneous'. I don't like disagreeing with you, but this is incorrect. You can easily see the "ramp up" of household incandescent lights. It's about 1/10 of a second, and is plainly visible. Some CFLs are (at least visibly) "instantaneous". |
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![]() "William Sommerwerck" wrote in message ... One of the reasons that a car bulb is slow to reach full output, is that the filament has to be made thick and robust for enhanced reliability and failure proofing from vibration. That makes it have substantial thermal inertia, so much so that you can indeed see it hot up. On the other hand, high voltage domestic lightbulbs have no such constraints on their filaments, as they are not going on and off all the time like a brake light or indicator, and are not subject to vibration in normal use. This results in the manufacturers being able to design them with a much more delicate filament, with the result that, to all intents and purposes, the ramp up to full output is 'instantaneous'. I don't like disagreeing with you, but this is incorrect. You can easily see the "ramp up" of household incandescent lights. It's about 1/10 of a second, and is plainly visible. Some CFLs are (at least visibly) "instantaneous". Well, maybe the driving voltage does have something to do with it then. With double the line voltage here that you have there, I can honestly say that I cannot see any perceivable delay between flicking the switch, and having light. I have asked a number of people the question, and not one of them has said that they can either. Not that that is much of a scientific test, of course. Interestingly though, the ones that I said that I could see ramp up, are low voltage halogens. So I wonder if the fact that low voltage bulbs need amps through them, to get the same filament power as a line voltage bulb does with miliamps, dictates how robust the filament needs to be, and hence how much theremal inertia it has? I know that halogens run a hotter filament to get slightly brighter light, but you can also see the low voltage ones visibly cool as well, which would lend creedence to the theory that the filament is more robust. It is not a function of the fact that the bulbs are of a halogen type per se, as the fittings that I have just bought also use halogen bulbs, but unlike the fittings that they are replacing, which *were* low voltage (12v AC nominal), these are line voltage types. They definitely appear to come on pretty much 'instantaneously'. So, perhaps a US 110v bulb, does take twice as long to reach 'full' output, as a 240v one, and that is indeed enough to be able to see ? Arfa |
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So, perhaps a US 110v bulb, does take twice as long to reach 'full'
output, as a 240v one, and that is indeed enough to be able to see ? I don't know. A 100W 240V bulb would have 4 times the resistance, so I don't see it "warming up" any more quickly (or slowly). |
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![]() "William Sommerwerck" wrote in message ... So, perhaps a US 110v bulb, does take twice as long to reach 'full' output, as a 240v one, and that is indeed enough to be able to see ? I don't know. A 100W 240V bulb would have 4 times the resistance, so I don't see it "warming up" any more quickly (or slowly). But if the filament is of a more 'delicate' CSA, that might well give it less thermal inertia, leading to it heating quicker ? Based on what you are saying, there is no reason why a low voltage 50 watt car bulb, should heat any slower than a 50w 240v bulb, but obviously it does, as the ramp up time can be very clearly seen on them. Anybody over there got a photodiode, a storage 'scope, and the time to hook 'em together to have a look at just how long the time delay is? Once that was known, I could do the same here to get a rough comparison. Arfa |
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![]() William Sommerwerck wrote: b) production of plasma sets is to be ceased if it hasn't been already. As such, it could even be seen, in tech terms, as 'old technology'. I'm curious as to where you got this information. It's amazing how an "old-technology" set is generally considered to be the best direct-view TV made. Power consumption. I'd expect more problems to arise if you use the TV a lot. Graham |
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Arfa Daily wrote:
snip Based on what you are saying, there is no reason why a low voltage 50 watt car bulb, should heat any slower than a 50w 240v bulb, but obviously it does, as the ramp up time can be very clearly seen on them. Anybody over there got a photodiode, a storage 'scope, and the time to hook 'em together to have a look at just how long the time delay is? Once that was known, I could do the same here to get a rough comparison. Sure, but getting to it is the issue; I had promised to run remote controls near a radio receiver to listen for RFI too and haven't got to that either. Perhaps this weekend; if done I'll post the results and a link to an image file for the waveform. Michael |
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On Tue, 31 Mar 2009 02:47:21 +0100, "Arfa Daily"
wrote: Dream on. The efficiency police are active in Europe: http://www.telegraph.co.uk/news/worldnews/europe/3174452/Traditional-lightbulbs-banned-by-EU.html Yes Jeff, I'm fully aware of all this eco-bollox nonsense with incandescents, but as far as I am aware, it doesn't affect halogens for which there are no direct replacements, at this point in time. The G9 bulb is about the size of a projector lamp or small headlamp bulb, and nothing else would fit in a socket intended for one. Many many ceiling light fittings this side of the pond are now 'decorative' design pieces as well as being functional, and these invariably use bulbs like the G9 or similar pea types in a halogen format, so unless they are going to render everyone's modern light fittings obsolete, including ones that are on sale right now, I can't see how they can ban this type of bulb. http://www.telegraph.co.uk/earth/422...gislation.html http://www.treehugger.com/files/2009...ed-from-eu.php |
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b) production of plasma sets is to be ceased if it hasn't been
already. As such, it could even be seen, in tech terms, as 'old technology'. I'm curious as to where you got this information. It's amazing how an "old-technology" set is generally considered to be the best direct-view TV made. Power consumption. I'd expect more problems to arise if you use the TV a lot. The Pioneer runs surprisingly cool. And it's well-ventilated. |
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![]() William Sommerwerck wrote: b) production of plasma sets is to be ceased if it hasn't been already. As such, it could even be seen, in tech terms, as 'old technology'. I'm curious as to where you got this information. It's amazing how an "old-technology" set is generally considered to be the best direct-view TV made. Power consumption. I'd expect more problems to arise if you use the TV a lot. The Pioneer runs surprisingly cool. And it's well-ventilated. That's an encouraging sign. Graham |
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![]() "msg" wrote in message ernet... Arfa Daily wrote: snip Based on what you are saying, there is no reason why a low voltage 50 watt car bulb, should heat any slower than a 50w 240v bulb, but obviously it does, as the ramp up time can be very clearly seen on them. Anybody over there got a photodiode, a storage 'scope, and the time to hook 'em together to have a look at just how long the time delay is? Once that was known, I could do the same here to get a rough comparison. Sure, but getting to it is the issue; I had promised to run remote controls near a radio receiver to listen for RFI too and haven't got to that either. Perhaps this weekend; if done I'll post the results and a link to an image file for the waveform. Michael I know what you mean. I think that the older you get, the less inclined you become to actually getting off your arse and doing these things ... I have a graphic LCD panel sitting here on the table by the side of me. There is a board that I built hooked to it, and I have a proper professional IDE / compiler installed on the computer. I found some routines on the net, imported them to the IDE and compiled them and loaded them up to the PIC. It sort of worked, but there is some issue with there being both a vertical and a horizontal 'echo'. Could be hardware. Could be software. And there it has sat for at least 2 years. I was really enthusiastic when I started on the project. Now, I can't even be fagged to look a bit deeper into the routines, to see if I can write a simple diagnostic to prove out the hardware. Very sad really. Actually, all I want to do right now, is jet off to sunny Florida, on holiday ... :-) Arfa |
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