Subject: Panasonic NN-S563WF S/N: 6B43180461 Mfr Date: April 2003
Problem: The platter motor buzzes or vibrates (no visual motion) and the interior light has a very faint glow when the unit is in idle. Otherwise the microwave works fine.
In checking a few components, I found what appears to be an encapsulated wirewound resistor under the main transformer that tests open. I know someone else on here tried testing the high voltage diodes unsuccessfully as they seem to require a high forward bias voltage. However, since the microwave works, I don't think there is a problem with the diodes.
Does anyone have a schematic? What is the component under the transformer? I would like to avoid replacing the whole board as that seems such a waste. I really hate the way electronics have become "disposable". Has anyone come across this "vibrating/buzzing motor" problem?
Bruce