Ross for Model Number MMV4205BA Related to MMV4205BA not heating: Thanks for your answer about the magnetron and the diode. I took the microwave apart last night. The symptoms remain the same whether the starting capacitor is plugged in or not. Still think it is the magnetron? Thanks.
Answer Hello Ross. Yes, it could still be the magnetron WPW10126786. Unplug the magnetron and see if the problem continues. If not, replace the magnetron and diode. Hope this helps. Read More... Answered by AppliancePartsPros.com | Thursday, December 8, 2011