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Model #LNS4051DX/X 40 inch LCD HDTV Samsung display T.V just won't turn on. No picture or sound. Power light on front of T.V just blinks red 3 times, and then no light (it looks like it's trying to turn on but it can't.)
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? 3:41
https://www.youtube.com/watch?v=RbZncfiOXQA
Jul 13, 2011 - Uploaded by FixItUrselfDummy
Fix your tv with black screen blinking light, popping sound noise. ... Watch QueueQueue ... TV Black Screen - Repair LCD LED PLASMA - Problems SONY LG .... I have a 60 inch samsung DPL tv how can I stop the humming or ... What do I do if my tvturns on but its just a black screen so sound no picture?.
That is most likely a bad diode in the power supply. It will require repair but it should be reasonable. There are youtube videos showing the repair if you are handy.
Im not 100% that this is the cause, but it seems like it
helloFive blinks - AKB circuit (automatic kine bias), the
timer/standby indicator blinks for about 30 seconds then goes to the
self-diagnosis function. Something is wrong with the video. Check video
out, Q705, 732, 761 and other components on the C board, also check
Q218, 219, 220 on the A board. In addition, unit could be in IK
blanking, try turning up screen slightly.
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