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Panasonic microwave model no. NN-K571MF works for 23 seconds only

Dear Sir,

I have Panasonic microwave oven with a faulty inverter board. I bought a new board and installed it. The inverter board no. Is F66454T07AP.
Now on the microwave mode it works for 23 seconds only and stops and the display shows the 2 dots that indicates the oven on the standby mode.
When I use the grill mode and set the time and press start, the oven shuts down and restarts immediately and the display shows "welcome to inverter cocking"

I need your help please.

Thank you
Best regards