Problem with a Panasonic TH-42PZ80b

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

Yep i did aha the two codes that are on the SC board is T TXNSC1RLTB the other one i have on their is 16060803272

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

No TNPA number? It's written next to ORDER NO. It's possible you'll have to flip the board upside down to read off the TNPA number; Panasonic sometimes print it there for some reason.

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

Yeah i got the seven blinks then i disconnected the sc2 and sc20 and then the green light flashed for about 3 secs then the light stayed green so it means the SC Board is gone?

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

Your diagnosis would appear to be correct. Meanwhile, I believe your part is TNPA4410. Please confirm.

You can get it cheap from here:-
http://www.ebay.co.uk/itm/TXNSC1RLTB...item2c6d9fd824

But I prefer to order from these guys, their returns policy is good, for an extra fiver. I had a dud part from them before, and they let me keep it and sent me a new one (which worked.) Can't fault that:-
http://www.ebay.co.uk/itm/42-PANASON...item460f0237a6
http://www.ebay.co.uk/itm/42-PANASON...item416f015a5f

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

Thank you tom!

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

Do let us know if it fixes the set!

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

It still doesnt work

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

Is the fault code the same? All connections OK?

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

ive double checked to make sure i have connected everything and it still blinks 7 red lights

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

Is that with the buffer boards in place?

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

thats with all the boards connected

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

If you go back to the isolated SC does it power on normally?
It is possible you got a defective board, though I could not be sure.

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

I went through the guide again and i didn't get the 7 blinking lights and a picture came up and ill attach it at the bottom and so i reconnect the SD board like it said and it went bang and i said ahh crap and now i get the 7 blinking lights so i take it i will need to replace the SD board now Thanks Laurence

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

Did you make a connection change with the set powered up?

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

What do you mean?

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

The only way I can see such a bang happening was if connections were changed while the set was still turned on, i.e. plugged into AC?

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

The only way I can see such a bang happening was if connections were changed while the set was still turned on, i.e. plugged into AC?

Yeah i made sure the isolating crocodile clips wasnt touching anything and yeah AC

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

So, the TV -was- powered up and you connected the buffer while it was powered up?

[laurence1023]

Re: Problem with a Panasonic TH-42PZ80b

I disconnected it all like it said on the guide then it didn't get the 7 blinks so i reconnected the SD board and then it went bang the TV powered down so i unplugged it checked it then plugged it back in and got 7 lights

[tom66]

Re: Problem with a Panasonic TH-42PZ80b

Yes that is what I am getting at. Damage like that can occur when you disconnect and reconnect stuff while live. All connection changes must be made with power off. But since you have still got distorted image on the top it might just be a case of replacing that damaged buffer.