"James Sweet" ha scritto nel messaggio
news:ztrXe.11902$Yu2.1302@trnddc02...

"James W" wrote in message
...
I was wondering if you guys could help me...

I have recently inherited a dead 50" Phillips Plasma monitor. This
monitor worked fine up until 6 months ago. When I press the power
button, the green "on" light appears and I hear a click, but there is
no display (there are two 5" fans in the housing, they do not spin up
either). The first thing I thought was that the power supply was
dead, so I removed the back cover and found the board. On the board,
there are three small burned areas where some of the components have
shorted out. This monitor is out of warranty, and according to
Phillips, is not available for after warranty repair. The Phillips
help desk person I spoke with gave me a few phone numbers for local
repair shops, but told me that they would not sell me the replacement
part I need directly...which means parts + labor. Since the power
supply appears to be the only damaged part of the entire display, I'd
like to obtain only the part I need and replace it myself. Here is
the pertinent info:

TV Model: Phillips 50FD9955 50" Plasma Monitor
Product Link: http://tinyurl.com/c5a4n

Defective Part: PNT-503
Manufactured by Origin Electric Co. LTD (made in Japan)
Specs:
Input AC 100-240V
50Hz/60Hz
7.1A
Output +170V 2.0A, +70V 2.6A, +5V 5.0A, +5V 1.1A, +3.3V 4.0A
+7V 0.5A, +14V 1.0A, +6V 0.3A

The following marks are at the bottom left of the board:

3S110071
(PNT-503)
PKG-1939

I've been scouring the web looking for a source for this board, but so
far, my search has been fruitless. It would be a shame to throw this
thing away, especially when it may only need one part. Of course,
there is a good chance that the damage is more extensive than I can
currently tell, but I think it's worth a shot. If anyone can provide
any help on sourcing this part (or a compatible replacement), please
let me know. As a side note, I have very little experience with board
level repairs, so I wouldn't be able to repair it myself...but if you
know someone who could, then that would be helpful too. I am
including a link to pictures of the board.

http://img185.imageshack.us/my.php?image=board7uy.jpg
http://img345.imageshack.us/my.php?image=damage14xf.jpg
http://img345.imageshack.us/my.php?image=damage22bi.jpg
http://img345.imageshack.us/my.php?image=damage30wn.jpg

Thanks in advance for your help and for taking the time to read this
post.

James


The problem may be only the power supply, or there could be a fault
elsewhere that burned it up. Your best bet is to take it to a shop that
works on this sort of thing, they'll be able to repair the existing power
supply at considerably less cost than buying a new one. Plasma sets are so
complex there's really not anything anyone here can do to help you fix it
on
your own.

Yes, but it's only a switching psu...

I.