Hi you will need first to isolate where the problem might be so try to plug other unit or device in your power surge like a dvd player. if it is work your lcd tv have problem now how are you going to fix your tv, use a philip screw driver and open the back cover to gain access the internal part. since doesn't turn on check the power supply first which is the main source of supply of all the board. replace blown fuse and other defective part. bulged capacitor will not work good replace it use the panasonic brand atleast 105c ratings it is effective. thanks hope will help you to fix the problem.
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