Pioneer Plasma PDP-42A3HD Video Problems

[mack505]

Hello, I have a Pioneer Plasma PDP-42A3HD TV that experiences video issues after a few minutes of being on. The center of the picture fades in and out and there is a general green tint that comes in and out also.

I've run the TV with the back off and a few small fans on it, thinking it could be an overheat issue, and it did delay the symptoms significantly.

Any ideas where to start?

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Here are 2 videos of the issue:

http://youtu.be/50BOdhxAJF4

http://youtu.be/eZEwhVgrUR0

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Pics of the issue

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Did I post this in the wrong place?

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Anyone, Bueller, Bueller?

[dcapper]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Get your hands on some cooling spray or canned air. Spray different spots after your picture goes funny.

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Thanks dcapper. I allowed the TV to run for a while, and the picture gets bad, and then the TV clicks off and comes back on with a poor picture, fades in and out, and that cycle repeats.

I did use the compressed air on all the components, but it did not improve the situation. Any thoughts?

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Get your hands on some cooling spray or canned air. Spray different spots after your picture goes funny.

Do the symptoms look like a YSUS board problem?

[tom66]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Looks like Vsus may be unstable, have you checked if it is OK? It should be around 200V.

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Looks like Vsus may be unstable, have you checked if it is OK? It should be around 200V.

Thanks Tom, where is the Vsus? Trying to locate it in the attached service manual.

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

Looks like Vsus may be unstable, have you checked if it is OK? It should be around 200V.

This is the board, but which connection do I need to test? I am trying to find what the voltages should be so I can test, but no luck so far.

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

I replaced the Y sustain board, and the TV powers on, the lamp is lit, I have sound but I'm not getting a picture... Any ideas?

[mack505]

Re: Pioneer Plasma PDP-42A3HD Video Problems

So it turns out it a ribbon cable was detached that was out of sight. Once that was re-attached, I was good to go.

So in my case, this was a bad YSus board - PKG42H5G1. Picked one up for $40.

I appreciate the support.