panasonic TX-P42X20B flashing red

[karlpowell]

Hi folks

I have a plasma Panasonic TX-P42x20b set with a fault ....I only see 10 red flashing lights, I Have had a quick look at the Caps on the power supply board but they all look to be OK .

When I first press the power button I hear a click then a few seconds later another click and the light starts to flash.

any help here would be great ...


PS great forum

Karl

[martyparish]

Re: panasonic TX-P42X20B flashing red

Be sure to check out Tom66's Plasma Troubleshooting Guide

[tom66]

Re: panasonic TX-P42X20B flashing red

That isn't particularly applicable for this set, it's more designed for LG, Samsung and Fujitsu-Hitachi plasmas. On this set, 10 blinks is likely a failed ceramic capacitor on the PSU board.

Training manual for your TV:
http://www.tgohome.com/ServiceManual...&Search=Submit

[karlpowell]

Re: panasonic TX-P42X20B flashing red

thank you very much for your both replies, tom please can you give a little more info on which ceramic capacitor im looking for ?

[tom66]

Re: panasonic TX-P42X20B flashing red

A picture of your power board, the large centre one, would be very helpful in this instance. I have a feeling this is different from the common 10 blink problem due to a different PSU.

[karlpowell]

Re: panasonic TX-P42X20B flashing red

here you go http://img43.*************/img43/8352/p1221543.jpg

[tom66]

Re: panasonic TX-P42X20B flashing red

Yeah... it's a different PSU.

10 blinks is a Sub 3.3V, 5V, 9V or tuner power SOS.
It can be P, SC, SS or A board.

To diagnose:

Unplug SC/SS. These are the two large boards on the sides of the plasma panel. Both the power (thick blue/white) and data (thin ribbon) should be unplugged. It can be left installed in the chassis. If the blink code then turns to 6, 7 or 8 blinks the problem is with the SC or SS. If not it is P or A.

[karlpowell]

Re: panasonic TX-P42X20B flashing red

the code stays at 10 , I wont be able to reply to any messages now for a few hours as i have to take the kids to a disco

[karlpowell]

Re: panasonic TX-P42X20B flashing red

since the code stays at 10 blinks with both the white and blue cables to each board at the sides and the ribbon cable unplugged from the left board , I still get 10 flashes from the red light , could this be a PSU fault ?

[tom66]

Re: panasonic TX-P42X20B flashing red

Did you unplug the other cable on the SS (right) board? Picture in case it is different would help.

[karlpowell]

Re: panasonic TX-P42X20B flashing red

there is no ribbon cable going to the right board

http://img248.*************/img248/9007/p1221545.jpg

[tom66]

Re: panasonic TX-P42X20B flashing red

Can you unplug all but the connectors going to the plasma panel?

[karlpowell]

Re: panasonic TX-P42X20B flashing red

Are these the 2 ribbon cables on the bottom board ? if so then when removed I still get 10 flashes ...

[tom66]

Re: panasonic TX-P42X20B flashing red

The righthand board, the SS (Sustain board.)

[karlpowell]

Re: panasonic TX-P42X20B flashing red

OK I have disconnected the 2 orange ribbon cables from the SS board and still get 10 flashes :0

[tom66]

Re: panasonic TX-P42X20B flashing red

Those are the panel ribbons, you can leave those connected. They go to the plasma panel itself. We are looking for any connectors other than those.

[karlpowell]

Re: panasonic TX-P42X20B flashing red

OK tom with all the connectors removed from that board we still get 10 flashes

http://img534.*************/img534/5017/p1231547.jpg

[tom66]

Re: panasonic TX-P42X20B flashing red

OK so it is on the P or A board. Got to go now, will post more later (bump this post if I forget.)

[karlpowell]

Re: panasonic TX-P42X20B flashing red

with a bit of luck it will just be the power supply board , I don't mind replacing components ,I cannot see any scorch marks or anything looking burnt out on this this board.

[karlpowell]

Re: panasonic TX-P42X20B flashing red

if you need any more pictures let me know