If you have any electronic background, the best thing to try first with this TV set would be to locate the convergence board and unplug the power plugs going to the board. Try then to turn on the TV set, and if it does turn on, turn it off right away! That will tell you that the convergence board is shorted and causing your problem. If the set still will not turn on you will need to trouble shoot the power supply board. If you have no electronic circuit board experience, this is not the job for you to attempt, play it safe and call in a trained tech. good Luck
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