Question about Televison & Video
Look for brown crispiness on it or marks around soldered components. Never a good sign.
Posted on Jan 17, 2021
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This oven is programmed with a self diagnostic failure code system which help for troubleshooting -H97 and as described above "mica piece and burnt smell" sound like Inverter Power Supply. DO NOT try to repair or re-adjust preset volume on the board. It is very dangerous to repair or adjust without sufficient test equipment because this circuit handles very high voltage and very high current Operating a misaligned inverter circuit is dangerous due to the Very HIGH voltage and current that is produced by this board.
Defective board must be replaced with new one -INVERTER POWER SUPPLY.
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