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Equipment Repairs => PLASMA TV forum => Topic started by: old tvman on January 05, 2018,11:55:11

Title: Panasonic tx-p42x60b
Post by: old tvman on January 05, 2018,11:55:11

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

Title: Re: Panasonic tx-p42x60b
Post by: t1412 on January 05, 2018,17:30:48

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

Title: Re: Panasonic tx-p42x60b
Post by: downunder on January 07, 2018,18:51:03

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

Title: Re: Panasonic tx-p42x60b
Post by: downunder on January 08, 2018,04:56:19

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

Title: Re: Panasonic tx-p42x60b
Post by: t1412 on January 08, 2018,16:18:13

yeah your right bruse it won't happen again,

shaun

Title: Re: Panasonic tx-p42x60b
Post by: old tvman on January 09, 2018,13:31:26

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.

Title: Re: Panasonic tx-p42x60b
Post by: old tvman on January 16, 2018,16:56:43

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

Title: Re: Panasonic tx-p42x60b
Post by: downunder on January 17, 2018,03:31:23

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

Title: Re: Panasonic tx-p42x60b
Post by: old tvman on January 23, 2018,05:10:14

Board no 3 ordered here's hoping.

Title: Re: Panasonic tx-p42x60b
Post by: jordan on January 23, 2018,11:36:18

https://www.ebay.com/itm/Panasonic-TNPH10451A-Main-Board-for-TC-P65ST60-Plasma-TV-/182385821629?nav=SEARCH

Title: Re: Panasonic tx-p42x60b
Post by: old tvman on March 30, 2018,14:56:05

Sorry for the delay but I eventually found it was the power supply board that was faulty.
thanks all.

Title: Re: Panasonic tx-p42x60b
Post by: downunder on April 01, 2018,05:21:46

Well, tie me up and tie me down! PSU would be my last suspect. Anyhow, an outcome.                     Bruce