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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/
Ur Tuner board,that the tv signal came into that board.U have a little manchanical skill.Take ur tv aparts.Replaced that Tuner board ur tv will work again.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board to replacement.
Most likely you have an inverter problem. The inverter powers the backlights so that the picture can be seen. You can try holding a flashlight close to the front of the screen in a dark room and if you can see any trace of a picture, the backlights are not lit. This can be a pretty hot circuit to work with. Have a shop check it out for you. Thanks for using fixya.
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