Re: Panasonic TC-P42X3 PSU Repair

Just an update: After searching for hours looking for the part number of the 2 broken diodes, I stumbled across information indicating that were simply Panasonic brand switching diodes. So, today I went by RadioShack and picked up a pack of 1N4148 diodes and soldered them in, and for the first time ever, I saw the TV come to life!! After working on this TV for a month, it was quite a relieving moment. So far, the set is working fine.

For anyone who has this TV, I located a substitute for the impossible to find SN board, PN# TNPA5311AC....

Re: Panasonic TC-P42X3 PSU Repair

The reddish orange diodes do not have anything printed on them. The black one does but I've not unsoldered it to check at the moment. The only thing I see on the glass ones are a yellow stripe near the cathode. Extensive research has me thinking that they are silicon standard signal diodes, but I remain unsure. When using my DMM in diode mode, I get a reading of about 560, which I translate to be 0.56V, or the expected value of a silicon diode as read through a cheap multimeter. I just wanted to know if I could simply go to the RadioShack in town...

Hello all. I have been trying to fix this TV that I purchased, and it has been nothing but a headache. The original symptoms were no power at all to the set. I used the Panasonic Training Guide combined with the service manual, as well as various posts from this forum concerning similar models to determine that the A Board was at fault. I sent the A board to ModusLink for repair, and when I reinstalled it, the relays starting clicking and I tried to power on the set. The TV went into locked mode with 14 blinks, which indicated either the P or A board was at fault.

Initially, I...

Re: New Members - please post your introductions here

Hi all. I came to this forum looking at different user experiences on various TV sets, as I've recently decided to start flat panel repair to make some extra cash. So far, this place has been a wealth of information and I'm grateful for all the member contributions that have made this place so great.