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Jan 25, 2013 - Uploaded by Tampatec
Common LG LCD TV REPAIR - NO PICTURE OR BLACK SCREEN FIX ... I have a LG 42PM4700-UB plasma tv that justwent black. The red ... I had to keep turning on and off the TVseveral times for the screen to come back.
Sep 15, 2014 - Uploaded by ShopJimmy.com
LED & LCD TV How to Diagnose Symptom of No Image on theScreen CLICK ... Tv was working fine when left to go to store and came back to blank picture and ... my samsung tv it turns on but its completely black and no sound at all ... LG LCD TV REPAIR - NO PICTURE SCREEN FIX REVIEW - Duration: ...
Hello.The screen goes black means that the backlights of your LCD is not working.Maybe the problem is the power supply or the driver board of the backlights.They shutdown because there have a shorted parts on the circuit or power supply.
Did you try to reset the power and turned on and get a picture or every time that you reset the power it will get a picture and the picture goes black?
Unfortunately the video you are giving the tv must be one of the last systems the uProcessor in the tv checks. It takes about 15 seconds to detect signal/no signal for each system. Good old automated technology!
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CHANGED Z SUSTAIN BOARD.PICTURE PERFECT.APART
FROM WHITE DOTS.. AND ALSO ALL FUSES AROUND IT .THINK IT COULD BE DUST OR FINGER PRINTS ON RIBBON JOINTS,,WILL
RE CHECK AND WIPE F/PRINTS TO SEE IF ANY CHANGE. GOOD LUCK
turn tv on picture comes up 2to3 seconds later tv blacks out then stand by red light flashes 4 times in a row repeatedly..can not turn on or off when stand by light starts flashing but before tv blacks out you can turn tv on and off repeatedly and picture and sound work.You have to unplug power cord for 30 seconds after stand by light comes on to get tv to turn on.