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Question posted by karl1056 on October 18th, 2012

When I Turn On The Tv The Fans Come On It Will Try To Start Up.( I Hear A Click)

I HAVE NO PICTURE OR SOUND . the led light flashes for a few seconds then all three lights come on for about a second then I hear a click as if the tv is shuting down . the fans stay on The only way to turn it off the is to unplug it. ( I PULLED OFF THE BACK COVER TO SEE IF THE FANS WORK ) This is the only problem I have ever had with this Tv Please advise me of any part i may need. I am

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Answer #1: Posted by TVDan on October 19th, 2012 6:33 AM

TVDan

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Normally the three blinking lights is an indication that you have a bad lamp, but really what this indication is, the microprocessor has not received the signal from the optical engine that "the lamp is lit and all is well". There are many things that need to happen before the lamp will start up. The power supply must develop all the needed voltages required by all the rest of the circuits, the cooling fans must be running at the correct speeds, the lamp door switch must be closed (interlock switch), The Color Wheel must be able to spin at the 1800 RPM and lock in sync with the video signal, the ballast circuit must be able to develop the 5000 volts to start-up the mercury vapor lamp, and the lamp needs to be in good working condition to light up. There should be no weird noises pointing to the fact that a fan or the color wheels motor bearings are starting to go bad.

After is shut down the fans should run far a while then turn off.

TV Dan

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