Panasonic Plasma TC-P42U1 my first plasma

[tw2005]

Re: Panasonic Plasma TC-P42U1 my first plasma

Oh crap, sorry mate really hoped it would not blow. it does say in the training manuals you can isolate one at a time. I assume it went on the first board tried.

Did you retry the old SC? Sounds like panel could ok but shorted buffers.

That's the trouble giving advice when things go belly up, I feel terrible.

I'm afraid it's most likely killed SC if gone SOS6.

[ryan74]

Re: Panasonic Plasma TC-P42U1 my first plasma

I disconnected su40, sd42, and sd46 and tried again.
This time screen lit, saw rainbow colors
Then I saw smoke from ic605 on the su
If it wasn't already bad sd/su are now.

Because of the fuzzy rainbow effect I saw on upper part of screen I think the screen is bad.
I'm going to remove sd/su and recheck sc to make sure I didn't blow it up

[ryan74]

Re: Panasonic Plasma TC-P42U1 my first plasma

I removed sd/su and left jumper on sc50
Sc board seems to be running fine. Green led are on both sc and ss
Good news sc is good still but

Do I risk buying the sd/su?

I may be looking for a deal on:

Sd- TNPA4785
A129292AEF

Su- TNPA4784
A169295CEF

[tw2005]

Re: Panasonic Plasma TC-P42U1 my first plasma

please do, I hope it's ok. I'll sleep better then. i would'nt assume panel is bad though if the buffer was shorted you can see weird effects. If panel was bad I'd expect no display.

Any chance it looked like this?

[ryan74]

Re: Panasonic Plasma TC-P42U1 my first plasma

I can't reproduce it now to take a pic but it did not look like the pic you posted
It resembled more of a localized impact with fuzzy rainbow colors spreading out.
No sign of a crack.
Part of the screen is lit white

[tw2005]

Re: Panasonic Plasma TC-P42U1 my first plasma

what training manuals do you have? I know Tom had posted some links up for some info. may be best to get other opinions. At least I'm confident I got you past everything else. panel and Su/SD only things left. I still feel panel could be ok. If you have 2 good Sc boards maybe try and sell one and invest in the buffers or obviously quit and sell the bits you know are good.

I wonder why nothing smoked the first time you jumped SC50 and isolated the Su/SD? I think I read that as one of Tom's suggestions early on?

[tw2005]

Re: Panasonic Plasma TC-P42U1 my first plasma

I can't reproduce it now to take a pic but it did not look like the pic you posted
It resembled more of a localized impact with fuzzy rainbow colors spreading out.
No sign of a crack

Ok, well my experiences run out right here then. Does sound a little suspect, maybe you're right about it being defective panel.

If you could find some buffers really cheap maybe have a go with the expectation it still won't work. Sometimes best to walk away but to learn sometimes you have to take a chance.

I've had only one bad panel, could not find crack either in a Sanyo but I had nil display and very weird buzzing noises moving around. tom helped me out on that first time experience. only loss I've had in a dozen TVs.

[tw2005]

Re: Panasonic Plasma TC-P42U1 my first plasma

well shopjimmy has plenty at $50 a set, free shipping in US if I read correctly.

[ryan74]

Re: Panasonic Plasma TC-P42U1 my first plasma

i found these but jimmy is more reliable and right here in MN.

http://www.ebay.com/itm/YSUS-buffers...item5ad6bd8392

http://www.ebay.com/itm/PANASONIC-TC...item3a57292dab

http://www.ebay.com/itm/Buffer-TNPA4...item2a24d8d43e

the first 2 time i jumped sc50 and tested sc board i removed them completely.
the only reason im worried about the screen is it came from a pawn shop so it could have easily been damaged while on display.

[tw2005]

Re: Panasonic Plasma TC-P42U1 my first plasma

i found these but jimmy is more reliable and right here in MN.

http://www.ebay.com/itm/YSUS-buffers...item5ad6bd8392

http://www.ebay.com/itm/PANASONIC-TC...item3a57292dab

http://www.ebay.com/itm/Buffer-TNPA4...item2a24d8d43e

the first 2 time i jumped sc50 and tested sc board i removed them completely.
the only reason im worried about the screen is it came from a pawn shop so it could have easily been damaged while on display.

agreed and even if they knew they'd probably use claim ignorance. I see a few sets being sold here overvalued and saying unable to test because they've lost the power cord from pawnshops.

I have read of people buying from SJ and being able to return the item if it turned out not to fix it although I'd enquire about it first because I don't think it's standard policy. They may take the buffers back minus a fee so a little like renting the boards. That may be an option, at least you won't lose completely.

I'm really hope it's just the boards and you have a win. Good luck.

[tw2005]

Re: Panasonic Plasma TC-P42U1 my first plasma

I have used SJ a couple of times although freight is pricey for Australia, but have found them pretty good and they're very helpful on the phone. Had the pleasure of talking to one of theguys there once.

[ryan74]

Re: Panasonic Plasma TC-P42U1 my first plasma

I will order them Monday or maybe run up there. I'm curious if they have a storefront.

[ryan74]

Re: Panasonic Plasma TC-P42U1 my first plasma

i decided to look close at the screen and found what i think is a short that caused sd/su buffer boards to go bad.

what do you think?
is this a short in the first 2 pics?

If i follow the lines horizontally from where it is shorted it connects to SU3 ribbon connection and that is where ic605 fried.

i scraped it with my nail, it appears to be between the 2 glass layers.

[ryan74]

Re: Panasonic Plasma TC-P42U1 my first plasma

the pics are with the filter screen removed so if it is dirt, it got there durring manufacturing because 2 glass panels seem glued together and it appears to be between them.