IT IS USUALLY UNDER THE LAMP HOUSING YOU MAY HAVE TO TAKE OUT THE ENTIRE OPTICAL BLOCK TO GET AT IT JUST LOOK FOR THE ONLY TWO SMALL WIRES GOING TO THE UNDER SIDE OF THE LAMP HOUSING FROM THE REAR (NOT THE THICK RED ONE GOING INTO THE LAMP FROM THE BALLAST) THE THERMO. WILL BE LESS THAN AN 1'' LONG VERY SMALL BLACK CYLINDER
HOPE THAT HELPS
P.S. THERE ARE OTHER MORE COMPLICATED POSSIBILITIES BUT THIS IS THE MOST COMMON
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Let me know model and brand of TV if its other then Sony KP-46WT510 and also count red standby light flashes as there would be long pause between blinks. These info will help me to find out possible solution.
KP46WT510 Shutdown 6 Blinks. 6 Blinks = Low B+ OCP/OVP SOLUTION: Replaced Flyback transformer. It had no rings on the ringer test. HQ Comments: Any load on the B+ line can cause 6 Blinks. Example: If the 200v line is loaded down will cause a drop in B+ due to bright picture current demand.
Click Here! to download the Sony Kp-46wt510 full service manual.
count the flashes again carefully, as that model should only blink a maximum of 9 times, unless your getting two seperate codes. Try counting and trying to notice if it pauses a second before blinking again. then let me know what you discover.
Eight blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some newer models of Sony TV sets, this code means that T8005 is defective on the D board.
If your not a tech and have no solid state repair experience, play it safe and call out a pro to assist you in this type of repair.