Mulja tv repair portal
Equipment Repairs => PLASMA TV forum => Topic started by: old tvman on January 05, 2018,11:55:11
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At switch on the front led is green for 2secs then starts to flash rapidly red 3 flashes.All the supplies seem to come up initially at switch on, checked all the fets etc all seem to check ok. I have replaced the main av board but fault still the same.Any ideas?
thanks davy
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don't know if this will work, if it has a power button on the tv press and hold it in for 8 seconds, it will either come on or start flashing error codes thanks
shaun
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Hi Shaun,
I think that's an urban myth. You must have got lucky. I tried it on a faulty Panasonic but no joy.
Hi Dave,
Code 3 is a 3.3V sos - usually the A-Board (Main). Can you be sure that the replacement is OK?
Will do some further research and let you know if I come up with anything.
Bruce
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Update, Dave,
There is a possibility that the SC board will cause code 3 - it can cause codes 3,4,5,6,7 or 10. However, you can isolate the A board to the point where it will operate on it's own although in effect the set will not function, the A board will still be active.
Unplug SC2 and SC20 on the SC board, SS11 on the SS board, P35 on the P board and the 3 flat white flexies on the A board.
Power the tv on. If you still get a blink code, the A board is the prime suspect.
Bruce
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yeah your right bruse it won't happen again,
shaun
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Thanks for the replies gents, done as you said Bruce and it looks like i got a dud A board,going to order another one and will come back and tell you how I get on.
Cheers davy.
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Well i fitted another AV board and it worked great, delivered it back to customer and it reverted to 3 flashing red leds,may have to go for third time lucky AV board or else its :33: :33:
cheers davy
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Suspect you may have gotten an A board out of a different size screen. I went through this exercise last week. First board gave me code 3, next board gave another code, finally had to call in a favour from a friend and got the right board. These boards all looked identical and had the same number but obviously have different software loaded for different size screens. I think it's the suffix, so a TNPH0784GA may not replace a TNPH0784EA. Anyway, you're on the right track. Bruce
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Board no 3 ordered here's hoping.
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https://www.ebay.com/itm/Panasonic-TNPH10451A-Main-Board-for-TC-P65ST60-Plasma-TV-/182385821629?nav=SEARCH
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Sorry for the delay but I eventually found it was the power supply board that was faulty.
thanks all.
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Well, tie me up and tie me down! PSU would be my last suspect. Anyhow, an outcome. Bruce