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 This elderly monster arrived with the error “ 4 blinks “ which the manual suggests is a power board fault

There are TWO power boards and a standby power board inside

On removing rear cover there were two swollen 220uf caps on the standby board, sadly replacing them the 4 blinks remained

Swapping the two power boards over[ as they look identical , gives a “ 2 Blink “ error , the limited info in the manual suggesting that the fault is on the lower board [ main 2 ]

Both boards have a PFC voltage of around 380 volts at switch on before the relays click out

I have done cold checks on both boards and there are no obvious differences

As the manual has only a block diagram of the power supply  it’s difficult to be sure of values / voltages

Has anybody seen or worked one of these or similar beasts and managed to diagnose the problem 

Thanks for looking 

Regards  Ken 

Űdv Mindenkinek !!!! Kűzdök ezzel a készülékkel,hibajelenség a következő: -stdby ok ,bekapcsoláskor átvált zöldre a led de a szokványostól gyorsabban pislog mig teljesen zöld lessz,, távira reagál bekapcsool, de nem tudom kikapcsolni stdby-ba - invertert nem inditja még egy villanás erejéig sem,tettem antennát és hang sincs.. - ha járatom,kb 10 perc után kattan a relé 1-2er, 2-3 perc mulva piros led 13-as hibakódot jelez. A táp mérve jónak tűnik a feszkók megvannak,én a mainboard-ra tippelek.. az eservice-ről letöltöttem a SM-t csak sajnos nem tudom megnyitni.. minden segitséget eőre is köszönök gyurmonc

Hello, I am working on a panasonic tv that shuts down a few seconds after it comes on, blinks(red standby light remains on)three times pauses, and repeat the cycle. Any ideas as to what could be wrong? Thanks.

Hello, I have a Panasonic TX-68PS20A 68cm (29") Television with a GP3 chassis. (Australian PAL model) The documentation I have found online says that the gp3 chassis supports VHF PAL-B/G and NTSC-M. However my tv doesnt support M audio. It just tunes the video and gives white noise through the audio since it's looking for B audio even though it's displaying ntsc video just fine. I have found no options for this in any of the service menus I've accessed. Am I missing something? I don't mind if I have to reflash something to make this work. Here is the pdf which I read the specs from, it's not for this model but a similar one with a gp3 chassis. http://elektrotanya.com/cgi-bin/download2.cgi?uid=37145&cid=1417425157&fid=117149&file=panasonic_tx-29psxx_gp-3.pdf&x=26&y=30