Re: Philips Plasma 50PF9431D/37 Chassis BJ2.5UPA



I hate giving up on a project but i feel better knowing that its not because i didn't try every everything i knew including asking for help. Your right about how complex TV power supplies are and i accept defeat on this one. I plan on buying a new one this weekend.

Its odd that every website i check ends up giving a replacement number that matches what you suggested (Philips # 996500036821 / LJ44-00118A) or (Philips # 996500042147 / LJ44-00125A). I have LJ44-00125A but i read that both parts are interchangeable....

Re: Philips Plasma 50PF9431D/37 Chassis BJ2.5UPA

I read through the pages you suggested about the DC - DC converter and i wanted to measure the input voltage via the decoupling capacitors. However i don't see how i can do that without removing the I/O shield and from what it seems if i do that, i lose ground for the AC input and possibly the SSB. I did test the PSB with each cable unplugged in order and all together and got the same code 6 error and protection mode except when i unplugged the SSB. when i did that i would get no error code or protection, instead i would get LED 8001...

Re: Philips Plasma 50PF9431D/37 Chassis BJ2.5UPA

Well i have been having a very hard time tracing the signal, I've been looking at the schematic for hours trying to make sense of it but it's obvious i have forgotten everything i learned back in school. I do have 5V standby (5.3V to be exact) and i also tested all the test points i saw labeled 3V, 5V and got reading of .2V or less before protection mode kicked in. I'm gonna keep studying the service manual and see what more information i can find or if i manage to figure our the signal path.

From what i read i suspect...

First of all i would to apologize if the question I'm about to ask has already been answered in a different thread and i failed to find it.

Like the title states i have a Philips plasma and it recently decided to die on me. When the unit is plugged in you instantly hear two clicks from the relays and the front green power LED is lit for about two seconds but is then followed by another click and a red LED on the front a panel flashing 6 times. I downloaded the service manual and found out that the flashing light meant it was in protection mode with error code 6 - an issue with the...