Re: TNPA5153 keep shorting

Thanks everyone. I appreciate the advice.

Re: TNPA5153 keep shorting

Yes, it is a 5351. I have removed all of the 30F131's plus a bunch of other parts I replaced and still have a short. No burn mark near SC2 connector.

Sounds to me like I might have toasted the board.

Re: TNPA5153 keep shorting

I got this set from ebay :

[url]http://www.ebay.com/itm/142189725409?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT[/url]

Is the resistance reading across SC2 OK with the Mosfets, transistors, and diodes from this kit removed? I'm wondering there is something else shot on the board and if I shouldn't abandon ship at this point.Re: TNPA5153 keep shorting<br /> <b...IDX%3AIT[/url]

Re: TNPA5153 keep shorting

Well, the only thing that seems to apply to my situation would be a arc at the grounding screws. Seemed like they were all down tight when I reinstalled the board.

I have since removed all the components I had previously installed but the board still shows up as only having 8.4 ohms resistance across 1 and 3 of SC2. That can't be right can it?

Hi,

I have a Panasonic TC-P50S30 that I am trying to repair. It had a short in at the SC board so I replaced 30F131 FETS. Still 14 Blinks and the board was shorted out again. Ordered a full compliment of FETS, Diodes, IGBT's and Transistors and replaced them all.

This time when I plugged it in, I got a solid red power light and then a few seconds later a loud pop, and smoke. I couldn't determine where exactly it came from and nothing looked exactly blown. The board is, of course, shorted again.

Anyone have any ideas on what might be wrong or what I...

Re: Panasonic SC Board - BAD 30F131 IGBTs

After a bit of digging, it looks like the mosfet at Q600 (C08N25) should also be replaced since it can blow the 30F131's if it's bad.

Re: Panasonic SC Board - BAD 30F131 IGBTs

Hi,

Hopefully this is the right thread for this. I am trying to fix a TPNA5351 (SC?) board. It appeared that this was the problem since there was a short a SC2 where it plugs into the power board.

I replaced 4 of the 30F131's all of which seemed to be shorted. Before plugging the board back in, I checked SC2 again. No short.

Plugged the TV in. Turned it on. 14 blinks. Unplugged. All 3 30F131's are now shorted again.

Does this sound like a power board problem or is there something else on...