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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: ...
If the TV AND the DVD player are not powering on, then it sounds like the problem is at the receptacle or power strip, where the TV and the DVD player are plugged in. Make sure the receptacle or power strip is working. Plug something else in, a lamp, a radio, anything, and see if it works. If it doesn't then the power strip is off or not working or the wall receptacle is not working.
The best suggestion I would advise is to buy a shielded scart connector & connect that from your DVD combi to either AV1 OR AV2. It sounds as if you are picking up RF interference from your current connections, this can sometimes happen if the cables do not have adequate shielding.
Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.