Dark blue circle on screen

Sounds like lamp again-- dark pic. Get quality lamp, need 4 inch space all around TV for cooling. Maybe cleanout dust inside.

Check its back-light inverter and back-light CCFL lamps.

If it happened gradually I would suspect the lamp--a photo posted here might help.

The other possible cause in a Optical light engine which might be very expensive to replace in this brand.


Typical light engine:

open up the back of the tv and look to see if any of the capacitors on the power supply or video board are swollen or oozing out stuff....if so replace them and should work

problem on high voltage .some of components are go to bad ,so replace this damage part quickly by authorized service center.

has the lamp been changed?

This is your Light Engine that is defective. They usually cost in excess of $700.00 to replace. Not the Lamp.

no power, but regulator is ok

Wow only 10 then major work, hum. First if pic is:Split screen picture with one half darker than the other half. "Deep Field Imager" is set to the demo mode, press the "video" button repeatedly to cycle through the video settings until Deep Field Imager is accessed and then change the setting from demo to "on" or "off" depending on preference. Also u can try:1. Dark blue raster with faint movement in the background, suspect the FMT PCB part # 934C153001 . Also1. May be intermittent. Remove and reseat the DVI cable between the Chassis and Optical engine 2. Removing and reseating the DVI cable does not resolve, replace the Optical Engine part # 938P015020 Hope this helps Tom!!

Please post me on this as well. My Sony just turned 4 yrs this Jan and just last week it started having the same problem. -Thanks!