If you heard recently a high pitched sound or fan like sound it may be the color wheel--if it fails the set will detect that and shut set off.
If lamp comes on even for a few seconds it likely is good--ballast which drives lamp is possible but rare.
SOURCE: blue screen with flickering horizontal lines
Sounds like the 1000uf capacitors on the FMT board need replacing. This is a common symptom with that chassis. There are three 1000uf caps that fail on that PC Board
SOURCE: t.v. will not turn on. flahes "lamp" then no picture!
I have a picture but the tv will periodically turn itself off during the day and then flash the 3 blinking lights...anyone know what the problem could be. We can fix it ourselves if we knew for sure what it is.
SOURCE: Sony grand wega started turning on and off continuously
The usual problem is that the lamp needs to be replaced. However, there is no guaranty that lamp replacement will correct the problem.
To figure out how to replace the lamp please visit
The frequently asked questions for Grand WEGA KF50XBR800 50 in. Rear Projection
http://www.agoraquest.com/viewforum.php?forum=70
SOURCE: TV won't stay on. Green & Red light timer-lamp (Green) stand by/temp (red) flash.
Most likely needs a new lamp. Easily done yourself.
SOURCE: Samsung hlr5667w that won't turn on. Good lamp and ballast
Any light blink on the front. Whats the voltage to the ballast from the power supply. Common problem on these sets are bad lamp door switch. Try shorting the switch. Color wheel also is problematic but usually will be noisy and cause shut down. Check power board for swollen capacitors. Hope this helps
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