I replaced the microcomputer circuit board associated with an F7 error code it had a burned out diode or relay circuit. I have since replaced the inverter board as well not sure I needed too. Plugged in the microwave and it heats like a charm without the error code, but the magnetron cooling fan doesn't come on to keep it cool. Where do I go next? If it is something unreasonable I will pull the parts and send them back. The unit was used up to 3 years before the problem and hasn't been used in about 1 year. I would rather fix it but will not put more than it's worth to replace it with something new.

Thanks,

Rick Entrekin

8206064 Control board