Panasonic tx-p50c2b A board fault

[Rickig]

Hi guys have a Panasonic board with faulty A board.
Set flashes 10 times.
Part number tnph0829 TXN/A1MEUE
I cannot find a replacement anywhere was hoping someone out there has repaired these before and can point me in the right direction.
There's a guy on eBay recently advertising a repair service for this board so assume there's a common fault on it.
Thanks in advance

[tw2005]

Re: Panasonic tx-p50c2b A board fault

Hi guys have a Panasonic board with faulty A board.
Set flashes 10 times.
Part number tnph0829 TXN/A1MEUE
I cannot find a replacement anywhere was hoping someone out there has repaired these before and can point me in the right direction.
There's a guy on eBay recently advertising a repair service for this board so assume there's a common fault on it.
Thanks in advance

how did you prove it as A board ?

[Rickig]

Re: Panasonic tx-p50c2b A board fault

Flash code 10 blinks.
And unplugging various boards ysus, xsus etc as per another post I found
Tried new power board.
Thanks

[tw2005]

Re: Panasonic tx-p50c2b A board fault

Flash code 10 blinks.
And unplugging various boards ysus, xsus etc as per another post I found
Tried new power board.
Thanks

So you tried disconnecting, SC2,SS11,P35, and the 3 white ribbons on the A board and still 10 blink?

[Rickig]

Re: Panasonic tx-p50c2b A board fault

I can't be 100% it was a while ago, I came across this site thought I'd register and see if you guys can help
So. If you have some suggestions I will go try them and report back.

[tw2005]

Re: Panasonic tx-p50c2b A board fault

I can't be 100% it was a while ago, I came across this site thought I'd register and see if you guys can help
So. If you have some suggestions I will go try them and report back.

That is a suggestion. If it 10 blinks doing that then it's A or P but since you've had a shot at P then it would be A. P boards generally are pretty robust.

Any history on this Tv , symptoms of what happened etc or purchased broken?

[tw2005]

Re: Panasonic tx-p50c2b A board fault

don't reconnect anything after you undo all those and power cycle it, will have to wait for the voltages to bleed off for a few minutes otherwise things can be damaged including the panel.

only run it long enough toe get a result.

[Rickig]

Re: Panasonic tx-p50c2b A board fault

Ok. Will try when I get home. Got it broke of a mate.

[tw2005]

Re: Panasonic tx-p50c2b A board fault

Ok. Will try when I get home. Got it broke of a mate.

No worries, I'll be off by then but Tom or someone else may continue when you come back with something.

handy to know how it broke sometimes, like someone may say eg.

I was watching it and heard a loud pop and the TV shut down and now 10 blinks. Or we had a lightning storm etc

If you have not already, download the service manual

[tw2005]

Re: Panasonic tx-p50c2b A board fault

there has been a case of 10 blink with the F15v line going open due to blown SMD fuse on the A board , PA5610, 4A 32v.

on the underside near a stencil marking Q5471, Q5472

[Rickig]

Re: Panasonic tx-p50c2b A board fault

Thanks I'll look

[Rickig]

Re: Panasonic tx-p50c2b A board fault

Right I found a working A board tried it and same fault. Which prompted me to look elsewhere. Found shorted mosfets on SC board tnpa5063.
Anybody had success repairing these? See a repair kit on eBay but it's in the usa. Can't find a uk based service.

[Rickig]

Re: Panasonic tx-p50c2b A board fault

Fixed...
10 flash
Changed sc board. Tv now fixed

[tw2005]

Re: Panasonic tx-p50c2b A board fault

So you tried disconnecting, SC2,SS11,P35, and the 3 white ribbons on the A board and still 10 blink?

Fixed...
10 flash
Changed sc board. Tv now fixed

Good to hear.

I can't help but wonder if you ever followed through with what I suggested early on?
If that was done , we should have been able to determine if 10 blink was A or SC and that was the intent and purpose of that step.

Anyway, pretty sure those A boards are hard to get and they do fail so a handy spare or you should be able to resell it.

Plus you now have a working TV to test it to be sure it's good