You cant its most likely that the lcd drivers attached to the lcd is shot , its because lots of these tvs have no cooling fans so the solders become brittle. or some one hits the front of the screen an it will damage them. its a trick to fix them if its even possible other wise the video board has gone south from some capacitor thats dried is 2nd choice. id not wast the money fixing it because your guess would be wrong most likely.
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You cant
its most likely that the lcd drivers attached to the lcd is shot , its because lots of these tvs have no cooling fans so the solders become brittle. or some one hits the front of the screen an it will damage them.
its a trick to fix them if its even possible
other wise the video board has gone south from some capacitor thats dried is 2nd choice.
id not wast the money fixing it because your guess would be wrong most likely.