The picture is breaking up

The problem is in the picture tube board circuit. Sometimes the CRT socket doesnt connect well to the CRT pins. Or maybe there have bad solders from RGB transistors. check those transistors, Also the bad thermistor discolored the entire tv screen.

Dull Video...

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

Convergence

* Screen Looks 3D, Warped, Distorted, etc
* Colors do not line up
* TV may shut off - and make a chirping sound.


You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Bad bulb, replace.

Ur LCD inverter board it dead,U replaced this board to get picture back.It usally aa long board.

Sounds lamp in TV getting weaker and soon it will be replaced.
When dlp tv start showing darker picture then its time for new lamp to get back vivid picture.

Ur main backlight video board is the cause,must replaced.

awewryte,
I have the same TV and now have the identical problem that you described. Did you ever get it fixed or find out what the problem was? If so, will you please pass the information on?
Thanks.

sounds like your color wheel is fading.

Three guns Red Blue and Green in the picture tube of an old CRT set. If one of the guns goes out it effects that color. Sounds like one of the guns inside of the tube is going out, To costly to replace for such an old antilog set that will have to have a convertor box next month anyway.

It isn't clear if the picture just loses color or the screen goes blank. If you are just losing color (picture goes to B/W) there is a problem in the color circuit and from your description it could easily be a bad solder connection on the board which decodes the color portion of the picture. If you are capable with a soldering iron and know TV HV safety, unplug the set, and remove the circuit boards and inspect (with a high powered magnifier)and resolder all suspect looking connections on the boards. You could also resolder all the connections which is more work but assures that solder joints are not the problem. If your problem is not solved at this point you are probably going to need a technician to look at it as it could be just about anything and probably would be beyond your expertise. Good luck and be safe.