Panasonic Plasma TH-P50GT30A - 7 blinks

[tw2005]

Re: Panasonic Plasma TH-P50GT30A - 7 blinks

same parts failed Q621,622,623 and Q661. Obviously I've missed something, time to put the other board in while I try and nut this out.

[tw2005]

Re: Panasonic Plasma TH-P50GT30A - 7 blinks

Just pooped itself again, somehing popped. 7 blink will get to it and report.

my GT has died again, 6 blink. was fine running for a few hours, was turned off and I just went to fire it up again, no pop but a funny low buzz like a shorted panel, bad buffer maybe?

[tw2005]

Re: Panasonic Plasma TH-P50GT30A - 7 blinks

finally, chinese parts arrived from UTsource.

Board #1: I did a very quick and dirty replacing just Q621 30F131 and Q661 RJP63G4, lasted not long and popped after 2 runs as reported in post #2..

So this time I've replaced the whole bank Q621,622,623 and Q661. It's running again and I'll keep this board in it for testing.

Board #2, which is the revised replacement board. had the common 3 x 30F131 Q401,402,403 + 3 x RJP30H2 Q421,422,423.

Fired up ok, but will retest this after Board#1 has had a good run.

[tw2005]

Re: Panasonic Plasma TH-P50GT30A - 7 blinks

Just pooped itself again, somehing popped. 7 blink will get to it and report.

[tw2005]

hallelujah, Back in the land of the cities where I can get some Pannys to fix.

TH-P50GT30A - 7 blinks. Been advertised for a while, price was a bit high, anyway got it down a bit.

person had it from new, already had 1 SC replaced 7 blinks, failed again, same blinks.

Even had the original failed board(bonus)

Original SC was TNPA5335BG (TXNSC11GGKBTH), these were superceeded with TNPA5335(TXNSC11GGKB50). Of course different regions can have different part numbers but the board number and two suffix work out.

Having looked at both the difference with the revised board was that they removed the soldered lands topside and had bare copper for the bolts to mate with. But the same screws were used.

taking it apart , 3 were not tight and the usual marks underneath.

It's looking like 3 x RJP30H2 and 3 x 30F131 shorted on the second board.

on the origninal, I had a quick poke around and looked like just 1 30F131 and the Q661 RJP63G4 gone. Found nothing else obvious .

So as luck would have it, the Q661 on the other was good and I had 1 30F131 still ok on that board.

Swap over, power up 8 blinks nothing popped.

Hello, I've been here before ( https://www.badcaps.net/forum/showth...ht=th-p50st30a) , failed Q102 on SS , RCJ330N25

Replaced that and up and running.

16500hrs, no wonder it's done 2 boards

I'll add photos when it's available.

Nice picture with the filter on the glass for glare.