Question about Samsung HLP4663W 46" Rear Projection HDTV
All three lights flashing. turns offf after 2-3 minutes. I turn on again same thing?
Samsung recommends that the lamp and large lamp fan and thermistor be replaced for this very common problem. But before putting up the cash for a lamp try opening up the unit from the rear, make sure the unit shuts down and is cool and UNPLUGGED, take out the lamp also and you will see a large fan behind the lamp that cools the lamp. also above the lamp there is a two wire line running to a small round thermistor just above the lamp this is what moniters the lamp temperature. What you basically want to do is make sure that dust is not causing the overheating problem. Get a can of compressed air and blow out the whole unit inside but make sure you get the fan blades cleaned off with the blast of air. Get the smaller DMD board fan clean also. NOTE: gently place your finger on the fan blade when you blow the air at it because the blast of air can cause the fan to spin faster than it was made to spin and you don't want to do that. Then button everything back up and give it a test run. If it shutsdown again then it could be the lamp. If it still does it after the lamp, try replacing the thermistor, (under 20 bucks).
It is amazing how dirty the inside of the fanned sets get.
Posted on Sep 27, 2008
When all three lights are blinking its indicating that the lamp may be defective.
Posted on Sep 26, 2008
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Posted on Jan 02, 2017
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