Tries tv unplug,replug it back like about an hour later.By letting the tv resetting itself back to the factory setting.Now,the tv should be working again,if the tv still getting same result no power LED light indication at all or just flashing power LED light indication.Mean ur tv the power supply board is the causes and the problems.The power supply board,that board where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
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