Panasonic Viera TH-P42S10A SOS 5 Blinks

[DoubleDratt88]

Re: Panasonic Viera TH-P42S10A SOS 5 Blinks

Thanks tw!
I've had a few other things to do lately so this got put aside but will get into again soon.

IC773 and 771 look suspect, Q701 702 i'm also suss on and will confirm out of circuit later this time.
I reckon it's one of those little buggers i missed last time around - even though i was looking at them on a list in red after seeing your 5081 experiences.

In any case that sounds like a very similar problem, closer than others. I'll have a good read and get back into later tonight hopefully. I appreciate the info very much!

[uk_rules_ok]

Re: Panasonic Viera TH-P42S10A SOS 5 Blinks

And got the bourns ultra-fast diodes for D865 from element14 in the end.

Please could you tell me the part number of D865

Regards,
Andy.

[Ancient Plasma]

Re: Panasonic Viera TH-P42S10A SOS 5 Blinks

I was able to repair a Panasonic TC-P42G15 Plasma with the same symptoms listed by the OP (buzz/hum followed by relay click at power on, 5 Blink SOS code, no signal, short across SC2) using a Panasonic Repair Kit.

Repair Kit:
PART: TNPA4844
MFR: PANASONIC
INV: Y-SUS REPAIR KIT

Repair Kit contents (15 components)
-3 x 2PG011 / RJP56F4A (Q402, Q403, Q404 - IGBT TO-220F)
-3 x RJP4585 (Q422, Q423 Q424 - MOSFET TO-220F)
-6 x 7.5ohm 1/3W (R402, R403, R404, R422, R423, R424 - Resistor SMD)
-1 x RJK6026 (Q660 - MOSFET TO-220F)
-1 x RJP6065 (Q661 - MOSFET TO-220F)
-1 x RF101L4S (D865 - Diode SMD)

All components were replaced except the resistors which measured fine on the SC board. The diode was shorted. I did not evaluate all of the TO-220s as some were definitely bad and I decided to replace them all. TV works as new after the repair.

The following reference was helpful during the repair:
Panasonic TCG46P15 Service Manual

Hope this helps someone else trying to revive an old plasma TV.