DIY inverter generator repair

In detail: do-it-yourself repair of inverter generators from a real master for the site my.housecope.com.

Gasoline, inverter generator 1.68 kW 230 V HUTER DN 2100 When the generator starts, the light (Output voltage) momentarily lights up at the output connector with a surge there is 220v, then goes into protection and the LED (Overload) is lit. In the connector (DC Output) there is 12v. No burnt-out parts were found in the electronic unit, there is no short circuit anywhere. The board with a huge heatsink is housed in a hard plastic case, filled with a dark compound, apparently “Neck is top secret”! With such a Bomb, I do it for the first time. What do you advise?

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