Hi folks,
Got and fitted a new identical inverter board to find on powering up, nothing much happened apart from a little rattling noise, and error code H97 was displayed.
I always use a moving iron ammeter with microwaves to see how things are going and current indicated was negligible.
Gather H97 usually indicates that the magnetron filament is O/C or there are loose wires about. Checked and filament is OK with no loose wires.
Guess Magnetron may be duff and caused the first inverter to pop - Any thoughts ? - Thanks - Chris.