With no sound and no picture it would not be the INVERTER, (no such part as "converter") You have a main board problem and it would cost around $300 to fix. These flat panel sets only last about 2 years, as much as they cost! You need to get a older type CRT television, pawn shops, tv shops, and yard sales have these, they are made much better than these newer sets and last 10 to 15 years or more. They also can be cheaply repaired when they breakdown.
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