THE SCREEN GOES BLACK AFTER TURN ON, THEN AFTER 20 MINUTES OR SO, THE TV WORKS RIGHT
That sounds like a faulty LCD panel tab. The only true fix is to replace the screen. This usually isn't cost effective.
SOURCE: Single Blue vertical line appeared on the sanyo 42'' LCD screen
vertical ic fult or vertical section supplys missing
SOURCE: screen went black on my 42" sanyo model dp42647 lcd
Hi there! The panel may be in protection mode. The Inverter board is the most logical area to start after checking power supply Voltages.(5,6,24 and 13Volts). There may be coils on the Inverter Board which have bad soldering or faulty. Other than this it may be main board which controls switch on or off. If all else fails, refer to a repairer. Beware of High Current!!! Best Wishes and Good Luck, Jus004
SOURCE: My new Sanyo HDTV LCD won't come on, although the on light is on.
If your Tv is in warranty or you have a cover plan, you need to return the Tv for repair or replacement.Your Tv sounds like it has a power supply fault.
SOURCE: Sanyo lcd tv blinking
Power supply board is dead.Replaced the power supply board will solved this problems.Tries Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
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