I have only a little appliance repair experience and scant knowledge of my multi-meter. This is a hood unit over an electric cook top. The turntable was working fine in the evening. Next morning it would not turn. All other machine functions work fine. Parts research shows it could be any of at least 5 parts but suggest starting with replacing the $40 motor and just parts your way through it. I'd like to learn how to dx and replace the motor as it is easy to get to but I don't know the Ohm specs and how to set the meter. Is it easy to get to and dx the control boards? Please advise. Thank you.