Sansui Projection TV - RCA D52W23 52 in., Problem is tv gets turn off automatically after few minutes. It doesnot off but a blue screen with lines appears immd.., it takes long time get the picture on screen .... same issue happen after seconds ...

the pixels have been damaged probably easier to buy a new one

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.
You can get a repair kit with parts and instructions from www.TvRepairKits.com

Once it goes to a Blue Screen, check to see if you can get the On-Screen menu to come up. If so, you are losing sync from your source input and should check the cabling or another input to the TV.
Good luck

The blue CRT or the Blue CRT drive board needs replacement. You can get the parts at www.tvrepairworld.com

Try this with TV off Press and Hold at same time ch- and vol - until TV comes on It should either let you into service mode or start convergence Automatically

Almost certainly the blue picture tube is bad. This is a huge job to replace and quite expensive. Generally it is not worth doing.

Hello......
First reduse the G2 voltage for the blue c.r.t,and watch if the unit works for longer period (offcource blue colour will be not present).After reducing G2 voltage to blue c.r.t still behaves the same than c.r.t is faulty and you have to replace.
Pls count the red led blinking when it goes off,incase it goes to std by mode.
Gopali

I Can Assure You That This Problem Is Associated With 2 Capicators On The Power Supply Board.
 

If it is truly a 52 inch standard projection set (you have it listed under 32V420T which is not a projection TV) and your 3 colors (red, green and blue) are no longer lining up and are all curved on the sides, then it means that your convergence power supply has stopped working. Post the actual model and chassis number and a better description of the picture here and I will be able to assist you further.

you tv problem intermittent the problem is in the color circuit, vertical circuit.have a tech check your tv for repairs.good luck.