Shadow on left side of screen

have you cleaned the lens & mirror? you can access those by removing one or both the porthole covers. There is a porthole cover on each side of the unit (left & right ) of the screen.

Either (on this plasma) a damaged/bad sustain board for left side of screen or a problem with the Display panel--set by model number is 5-6 years old so may or may not be worth fixing.

the problem with display change it

Dear jon,

This problem indicates that display panel is faultyThere is an issue with display panel,so replace display panel.It will solve your problem.

I think it helps.Let me know

This is a failure of the DMD board. The DMD board is the device that has the "million little mirrors" that compose each pixel of your display. The black specs are mirrors that are stuck in the off posistion therefore not reflecting any light at all. The white specs are the opposite reflecting light all of the time. This is a repair you should leave to a TV technician as once this board is repalced there is some electrical and mechanical alignment needed. Please take a moment to rate my answer. Thanks...

It's the light tunnel. The tunnel is a square tube made up of 4 mirrors glued together.

It looks like this from the side: |_| (with a piece on top too.)
When the glue breaks down, it shifts inside the little mirror holder. The shifted mirrors looks like this /_/ what you are seeing is the shadow of the tilted mirror tunnel.
ON the RCA's there's not a good fix.

RCA's response:
"Ok, well sadly they do not offer the light tunnel anymore, which is what you need. Sadly you would be rendered to get a whole new light engine assembly. That would be the D.N.D module, light tunnel,color wheel,optic spanner, and oci. mirror. Your best bet would be to search ebay for a broken engine and replace it that ways."

That is the ONLY response I got from them.

I took the set apart and found the 4 tiny mirrors. I will be attempting to epoxy them together. (The set is dead anyway, why not try?)

This can be the sync wheel assy, failure in the drive circuit for the display chip, or an illumination fault. You will have to give the set out for service.

Jerry G.

DLP TVs work projecting light throught a tube covered with mirrors, called the light tunnel.

The gray shadow it is something in the middle of the light tunnel, probably a mirror that has gone out of place when you moved the TV.

Does it appear on the photos if you look at them on a computer or print them out, and does the spot remain when you're using the menu?
If it's there all the time (on menus as well) it would suggest part of the display is starting to fail.
Also, have you done the shutter hold-up so you can check behind the mirror just in case it's something on the sensor (assuming it's not just the LCD that's failing)?