Panasonic TCP42S2 1 blink

[IamCanadian]

Ok hear is the rundown.

TESTED STB 5v 3.3v is acting a little weird (need to find pin out for this psu)
Vsus 207v, 15V shows up and gone with Vsus.

LED's light up on SS and SC

So it looks like all systems go..but no :S I will upload pics right away.

Any pointers?

[drpj23]

Re: Panasonic TCP42S2 1 blink

1 blink on a p42s1 is standby 5v sense timeout/ Comm error with IC9003

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

Pics. I have read about the ic9003 any way to confirm?

Also, I hear a slight arcing sound in the upper right quadrant of the PS

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

I have a working A board from a TCP42X2 Would it work for testing? same part number different suffix.

or will one being 720p and one being 1080p mess something up?

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

With other board it powers up right, but that is all I can do because all connectors are diffrent other than IR, Aud and the 2 power connections.

How do I trouble shoot what component is bad. or try to trace it along and check everything?

[tom66]

Re: Panasonic TCP42S2 1 blink

Do you get a picture? I doubt that the 1080p panel would work with a 720p board.

IC9003 is the main microcontroller.

Have you got the SM? If not, here it is:
http://tgohome.com/ServiceManuals/?d...&Search=Submit

Not sure which pin triggers 1 blink but there's an A board schematic from page 48 onwards.

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

F_STBY_ON is only showing 4v....could that be a problem?

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

Sorted out the 1 blink...1/2 way anyway, Now I have good pwr on 3.3v signal, but only have a momentary Panel_main_on.

seems like the panel cpu may be toast

[tom66]

Re: Panasonic TCP42S2 1 blink

How did you sort out the 1 blink?

Part # for the A board? It may be cheap but usually not with Panasonic....

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

1 blink was caused by a bad Vreg for 1.8vsub

TNPH0831 Trying to put a $70.00 offer on the bay

[tom66]

Re: Panasonic TCP42S2 1 blink

Interesting, perhaps something is connected to that Vreg? Maybe that has been damaged...

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

Yup, Just need to get a new a board...hope to find one cheap

[tom66]

Re: Panasonic TCP42S2 1 blink

Make offers to sellers. More than likely, they will accept because the boards cost them very little (they just decide the pricing because they're amongst a small number selling that board.)

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

Yeah My first offer was 50 he countered 75 so I said 70 so now I wait.

[tom66]

Re: Panasonic TCP42S2 1 blink

Since you have nothing (or very little?) invested in the TV, it could work out well, $70 for a 42" 1080p plasma...!

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

Got it for 70! + 15 shipping, Maybe I will add the SS and SN for the X2 on this one.

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

That board was the wrong suffix, I have looked all over and cant find a single board in stock for a reasonable price.

If anyone stumbles across a TXN/A1LHUUS, TNPH8031 Let me know!

[tom66]

Re: Panasonic TCP42S2 1 blink

Darn, it may still work, just be configured for US? i.e. cable input might not work or it might not have a French language option for some Canadians...

[IamCanadian]

Re: Panasonic TCP42S2 1 blink

for a 50" timing would be all off. wouldn't it?

[tom66]

Re: Panasonic TCP42S2 1 blink

Ah, yeah, probably -- though if it were a 1080p panel it were going into, I'd take a stab that it could have a chance of working, there's just the possibility things like the design of the panel (brightness, colour correction etc.) would be wrong.