Samsung 204BW LCD Power Board Problem
 

I'm trying to repair a Samsung 204BW 20" LCD monitor. The blue power
LED just flashes quickly when power is applied, it won't turn on.
Upon further inspection, there appear to be some electrolytics bulging
on the power supply board (C111, C112, C114). Resistor R113 appears
to have sustained damage as well, but I cannot tell its value for
certain. The board itself is model IP-43130A. I'm curious if there
are any common failure modes for this board.

If anyone has a schematic/service documents or other troubleshooting
suggestions they would be greatly appreciated.

Thanks!

Samsung 204BW LCD Power Board Problem
 

On Sep 1, 1:14*pm, Chris R wrote:
I'm trying to repair a Samsung 204BW 20" LCD monitor. *The blue power
LED just flashes quickly when power is applied, it won't turn on.
Upon further inspection, there appear to be some electrolytics bulging
on the power supply board (C111, C112, C114). *Resistor R113 appears
to have sustained damage as well, but I cannot tell its value for
certain. *The board itself is model IP-43130A. *I'm curious if there
are any common failure modes for this board.

If anyone has a schematic/service documents or other troubleshooting
suggestions they would be greatly appreciated.

Thanks!

I am also trying to repair the same monitor and my symptoms appear to
be the same...blue LED flashing. My C111, C112 & C114 appear fine with
some slight bulging at the silver tops but no electrolytic fluid is
showing at the top or bottom. In comparison, my C316 & C317, which are
the same capacitors as the other 3, are flat and are not bulging. The
CAUTION print box to the left of C317 talks about fuse F101 and I'd
like to check it but I can't find it. It shows on the board that it
should be right behind the power cord input but I don't see a fuse of
any kind. I will continue searching for a resolution and if I find
anything helpful, I'll let you know...Please do the same for me. You
can email me directly at . Thanks much! -Matt

Samsung 204BW LCD Power Board Problem
 

On Sep 1, 3:14*pm, Chris R wrote:
I'm trying to repair a Samsung 204BW 20" LCD monitor. *The blue power
LED just flashes quickly when power is applied, it won't turn on.
Upon further inspection, there appear to be some electrolytics bulging
on the power supply board (C111, C112, C114). *Resistor R113 appears
to have sustained damage as well, but I cannot tell its value for
certain. *The board itself is model IP-43130A. *I'm curious if there
are any common failure modes for this board.

If anyone has a schematic/service documents or other troubleshooting
suggestions they would be greatly appreciated.

Thanks!

I have the same board in my Samsung LCD. I think I have dirty power
at my new house which blew it. One of my capacitors seemed to blow
too (C316). There is also a high pitch whine that is comming out if
it which is usually caused by a blown transformer. I'm currently
seeking a solution for it whether it is buying a new board or trying
to fix the one I have. If you get any leads, please let me know and
I'll do the same. Thanks!

Samsung 204BW LCD Power Board Problem
 

On Sep 10, 12:31*pm, wrote:
On Sep 1, 1:14*pm, Chris R wrote:

I'm trying to repair a Samsung 204BW 20" LCD monitor. *The blue power
LED just flashes quickly when power is applied, it won't turn on.
Upon further inspection, there appear to be some electrolytics bulging
on the power supply board (C111, C112, C114). *Resistor R113 appears
to have sustained damage as well, but I cannot tell its value for
certain. *The board itself is model IP-43130A. *I'm curious if there
are any common failure modes for this board.

If anyone has a schematic/service documents or other troubleshooting
suggestions they would be greatly appreciated.

Thanks!

I am also trying to repair the same monitor and my symptoms appear to
be the same...blue LED flashing. My C111, C112 & C114 appear fine with
some slight bulging at the silver tops but no electrolytic fluid is
showing at the top or bottom. In comparison, my C316 & C317, which are
the same capacitors as the other 3, are flat and are not bulging. The
CAUTION print box to the left of C317 talks about fuse F101 and I'd
like to check it but I can't find it. It shows on the board that it
should be right behind the power cord input but I don't see a fuse of
any kind. I will continue searching for a resolution and if I find
anything helpful, I'll let you know...Please do the same for me. You
can email me directly at . Thanks much! *-Matt

Fuse F101 is right next to the power adapter port. It is small,
round, and brown.