vp50hdtv20a Picture issues

[landyboy]

Just picked up a Vizio vp50hdtv20a Plasma. There are a lot of posts about this model. The issue I am having is that it will power up and the screen will flash mainly on the right side of screen for a split second then go out but if you look closely you can see a slight dim light sorta fuzzy but very slight. I will post pics but any initial thoughts?

[landyboy]

Re: vp50hdtv20a Picture issues

Here are some pics. Set does power and doesn't go into shut down just no picture. I did find a swollen cap on the one board and replaced it with no change.

[landyboy]

Re: vp50hdtv20a Picture issues

More

[landyboy]

Re: vp50hdtv20a Picture issues

Ok Found a small defect on the upper buffer chip. Removed the chip and half of the screen is now lit.

[landyboy]

Re: vp50hdtv20a Picture issues

Not very brightly lit but lit.

[landyboy]

Re: vp50hdtv20a Picture issues

Here is a picture of the screen with the upper buffer board removed. I have it connected to a Blue Ray player and can hear sound but thats it. Does it require the upper buffer board to actually show the picture or is there something else wrong?

[freakaftr8]

Re: vp50hdtv20a Picture issues

Yes upper buffer needs to be connected, its in a series circuit, if no upper buffer present, sustain feed does not address the lower.