dgriffith

Hm that certainly won’t help!

You can use a set of probes in series with a 100 watt incandescent bulb as a “poor man’s megger” to roughly check insulation. Of course everything needs to be appropriately insulated for this!

Remove the motor from the washing machine and place it on an insulating surface.

Put one probe from your light bulb on a motor terminal.

Put the other probe on the frame of the motor.

The bulb should not light up.

Repeat for various motor terminals in case there are different windings/etc.

Possibly your motor is having an insulation breakdown when 220v is applied. Looks fine when testing with an ordinary multimeter and it’s low supply voltage.

So everything looks fine until it powers up. This flashover would likely fry whatever control components are in your main board, and it’s possible that your safety capacitor has a set of polyfuses in it that temporarily go high resistance when excess load is applied.

To check for an insulation breakdown you’d really need a megger which can apply 250/500v to the motor windings to check the leakage to ground/between windings.