Samsung plasma psu

[leonard]

I have a psu pcb that the vs and va voltages shut down after about 3 minutes working
I checked for poor solder joints, all ok
psu pcb type BN44-00442B
has anyone got a schematic?

[kc8adu]

Re: Samsung plasma psu

resolder everything mounted on a heatsink or that gets hot.

[Panzer_green]

Re: Samsung plasma psu

I have a samsung plasma too (ps51d6900dm) turning on issue.
The problem is the tv turns on and gets to the logo but then turns off! tries 3 times and for safety reasons stops trying to turn the tv on i believe.
I did a few checks and by no means am i very knowledgeable when it comes to fixing tv's but i checked all my voltages and they seem to be fine and disconnected other boards yet still came to the conclusion its the power supply.

I then heard about heating the board with a hairdryer to see if it turns on! which it did turn on. So i isolated it to a part of the board and found when i pushed on the IC the tv stayed on when not heated. I then believed it was a cold solder joint. It worked after re soldering this area for a week! then the same problem happened again! Is this part likely to be causing this problem and if so where can i get this part as i have had no luck looking myself!

Photo of IC i believe is faulty! in link
http://www.avsforum.com/forum/attach...7&d=1408930516