Hi all,

I have a 33 inch monitor (glass crt) with vga inputs and outputs (it has a
vga passthrough so you can hook up a standard monitor). It is a Presenta
M33 presentation monitor. I really need to get this monitor working again.

I last used it about 2 years ago right before I moved. Well after I moved,
i had it stored in the garage during the winter and one day my buddy and i
decided to bring it in and fire it up and test it. It was out in the cold
and we brought it in and fired it up right away without letting it warm up
(i should have known better but I was anxious to get it running). Dumb
mistake.

Something popped and the monitor no longer has any power. I can't bare to
throw this monitor away since it is so perfect for a huge mame cabienet of
some sort (it will accept from 640x480 to 1024x768 but it looks like an
arcade monitor in picture quality) plus it has the best of both worlds
(arcade monitor quality picture with vga input/outputs). So i want to fix
it. I will bring it to a shop if i have to, but I'm not exactly rich and I
am very good at taking things apart, putting them back together, and quite
good with a soldering iron. So the repair shop is the last resort since I
don't want to spend 100-150 dollars to get it repaired.

Does anyone know where I could start to look? I'm thinking its the flyback
(it was too cold when i turned it on causing it to draw too much power??)
but i'm not that expereiced at monitor repair diagnosis. I am good at r&r.
I AM aware of all the dangers involved though (the high voltage dangers and
I know how to properly discharge a monitor), i have taken monitors apart and
I am well expereinced in soldering, etc. I also checked the obvious and
looked for any blown fuses and there aren't any.

Any help would be strongly appreciated.

"Bo S." wrote in message
...
Hi all,

I have a 33 inch monitor (glass crt) with vga inputs and outputs (it has a
vga passthrough so you can hook up a standard monitor). It is a Presenta
M33 presentation monitor. I really need to get this monitor working
again.

I last used it about 2 years ago right before I moved. Well after I
moved,
i had it stored in the garage during the winter and one day my buddy and i
decided to bring it in and fire it up and test it. It was out in the cold
and we brought it in and fired it up right away without letting it warm up
(i should have known better but I was anxious to get it running). Dumb
mistake.

Something popped and the monitor no longer has any power. I can't bare to
throw this monitor away since it is so perfect for a huge mame cabienet of
some sort (it will accept from 640x480 to 1024x768 but it looks like an
arcade monitor in picture quality) plus it has the best of both worlds
(arcade monitor quality picture with vga input/outputs). So i want to fix
it. I will bring it to a shop if i have to, but I'm not exactly rich and
I
am very good at taking things apart, putting them back together, and quite
good with a soldering iron. So the repair shop is the last resort since I
don't want to spend 100-150 dollars to get it repaired.

Does anyone know where I could start to look? I'm thinking its the
flyback
(it was too cold when i turned it on causing it to draw too much power??)
but i'm not that expereiced at monitor repair diagnosis. I am good at
r&r.
I AM aware of all the dangers involved though (the high voltage dangers
and
I know how to properly discharge a monitor), i have taken monitors apart
and
I am well expereinced in soldering, etc. I also checked the obvious and
looked for any blown fuses and there aren't any.

Any help would be strongly appreciated.



First thing I'd check is the horizontal output transistor, it may have
shorted if the flyback arced or the drive waveform was distorted by moisture
affecting other parts. Might be better to have a tech look at it if you're
not familiar with monitor repair, these are fairly complex.

"Bo S." wrote in message
...
Hi all,

I have a 33 inch monitor (glass crt) with vga inputs and outputs (it has a
vga passthrough so you can hook up a standard monitor). It is a Presenta
M33 presentation monitor. I really need to get this monitor working
again.

I last used it about 2 years ago right before I moved. Well after I
moved,
i had it stored in the garage during the winter and one day my buddy and i
decided to bring it in and fire it up and test it. It was out in the cold
and we brought it in and fired it up right away without letting it warm up
(i should have known better but I was anxious to get it running). Dumb
mistake.

Something popped and the monitor no longer has any power. I can't bare to
throw this monitor away since it is so perfect for a huge mame cabienet of
some sort (it will accept from 640x480 to 1024x768 but it looks like an
arcade monitor in picture quality) plus it has the best of both worlds
(arcade monitor quality picture with vga input/outputs). So i want to fix
it. I will bring it to a shop if i have to, but I'm not exactly rich and
I
am very good at taking things apart, putting them back together, and quite
good with a soldering iron. So the repair shop is the last resort since I
don't want to spend 100-150 dollars to get it repaired.

Does anyone know where I could start to look? I'm thinking its the
flyback
(it was too cold when i turned it on causing it to draw too much power??)
but i'm not that expereiced at monitor repair diagnosis. I am good at
r&r.
I AM aware of all the dangers involved though (the high voltage dangers
and
I know how to properly discharge a monitor), i have taken monitors apart
and
I am well expereinced in soldering, etc. I also checked the obvious and
looked for any blown fuses and there aren't any.

Any help would be strongly appreciated.



First thing to look for would be any visible signs of what went 'pop', burnt
nresistors etc. maybe if you realy lucky its just the fuse, making sure its
realy dried out might be all thats needed, any signs of corsosion should be
considered too. But probaly a power device has blown up and may well show up
as a short circuit if you put a meter acros it. if so replacing just the
power transistor often cuases it to fail again, usualy a few sourounding
components get taken out at the same time.

Colin =^.^=