I have a single, oval splotch in the middle of the screen...

Plasma screens are extremely susceptible to getting broken from any impacts to the face of the screen. What you are describing sound very much like distorted or dead pixels. It may not be a fixable issue, you may have to replace the entire unit or live with the purple bar. The reason you don't notice it as much when the screen is dark is because purple is on the darker end of the spectrum, and will be most visible in contrast to lighter ad brighter colors.

hmmm. sounds like the screen might be damaged. You might have to get a new one. But before you do that I would try leaving it off for a while maybe a few hours or so and see if that helps.

defective lcd panel

sorry to tell you but you have a bad red lcd in the light engine you have to replace light engine

IF you are seeing a red or pink large oval area in the middle of the screen, I can tell you what the problem is.

It is not the lamp.

Let me know if you need more information--please confirm you have the red or pink oval.



SD TECH

Time for a new TV... Unless your really really really attached to that TV your going to spend more money on it then its worth to try and troubleshoot and repair it. Most of the TV's that come across my bench for repair that have developed lines and color splotches go into the recycling dumpster, they just aren't worth the time to repair as it usually comes down to a bad board or components that just can't be obtained to repair it. What most people don't realize is that once a tv is a couple years old there just isn't service parts for them anymore. The manufacturer keeps parts available until the warranty period is up on a model then its done for.

sounds like a optical block pn. 3141VSN916C around 1100 bucks for the part

Good Day;
It is very common for this model from what you spoke. If you handy return to me, Big Irish, and I will continue to help you.

99.9 % of the time of what you stated it sounds like a shorted CRT, picture tube. I have seen hundreds.
First, call the manufacture and complain about your concern and ask them for a CONCESSION because your tube has gone out.
2.If that does not work ; call a factory authorized service dealer to confirm problem and get an estimate, then return ti #1.
Good Luck, Day, Big Irish. I hope I helped.