NEC 42" problem plasmasync 42mp1

[henrysin44]

I have a nec px-42vm1a that has no picture, when I turned it on there was a red bar across the screen and then it turned off as I heard a pop, tv has worked before.

[henrysin44]

Re: NEC 42" problem plasmasync 42mp1

kinda urgent

[tom66]

Re: NEC 42" problem plasmasync 42mp1

Sounds like a Y-buffer issue. Did the bar go from top to bottom or left to right?

[henrysin44]

Re: NEC 42" problem plasmasync 42mp1

Left to right, I too collect flat screens from the dump but this one is my grand dads

[tom66]

Re: NEC 42" problem plasmasync 42mp1

Can we see a picture?
That extra message below "_________" is part of my signature, automatically added to the first post of mine on each page.

[henrysin44]

Re: NEC 42" problem plasmasync 42mp1

What do you want a picture of

[tom66]

Re: NEC 42" problem plasmasync 42mp1

The fault.

[henrysin44]

Re: NEC 42" problem plasmasync 42mp1

Well theres no picture on the screen (black) and no visible faults on any of the boards, all I currently have as a iPad with no camera.

[tom66]

Re: NEC 42" problem plasmasync 42mp1

There was a red bar though? Is that gone now?

[henrysin44]

Re: NEC 42" problem plasmasync 42mp1

Yes, I turned the nec on and a red bar went across the screen, I then heard a pop noise. The set will turn on, the fans will spin up with a green indicator light then the fans spin down and the light turns red. With no picture on screen.

[tom66]

Re: NEC 42" problem plasmasync 42mp1

The symptoms don't match up. It's pretty much impossible to have a left to right horizontal bar; due to how the pixels are arranged. There's a small chance it's the main board, but it's more likely a sustain board and buffer failure, which would lead to top to bottom vertical bar(s).

[henrysin44]

Re: NEC 42" problem plasmasync 42mp1

Oh there was also a top to bottom one too, forgot to mention that.

[tom66]

Re: NEC 42" problem plasmasync 42mp1

You really need to mention all of the symptoms but it still doesn't make sense. Pixels are arranged "RGB", left to right. You can get all "R" stuck on in one vertical bar, more than possible. You can't really have all "R" in a horizontal bar stuck unless the main board is at fault (you might get all RGB, i.e. white, but not just red), but this doesn't really correlate with the "pop" you heard. So I don't know what to say.

[henrysin44]

Re: NEC 42" problem plasmasync 42mp1

Well it happened, oh well.