NEED HELP....My problem started as a no heat problem (Everything worked but gave a loud humming sound and no heat) I tested the capacitor, mag, transformer, diode, interlock switches and all seemed ok except the diode seemed a little heat discolored on one end so I replaced. After replacing the diode and hooking everything back up when I closed the door a humming started.(Stops when I open door). Recheched my conections to the schematic and I do have everything hooked up correctly. Checked the interlock switches again and they check ok. So I unhooked the primary connections on the transformer and with the door closed I get about 130 volts going to the transformer as soon as the door shuts.(does this indicate a board problem?). thank you for any advice:)

I Will Try That But As To The Humming Starting By It Self As Soon As I Shut The Door Is That Normal? Thanks

Ok, ran through a on off cycle and it seemed I did have a stuck relay....now I am back to everything works but no heat.....pulled leads off of mag and ran...no humming. Does this mean the mag is bad for sure?(pulled mag out and found no signs off arcing on anttenna or waveguide looks great). another thing is that I can never get a discharge out of the capacitor with a screwdriver even seconds after I run the microwave.could the mag be causing that too?

Thanks for all your advice

Hey Glen65, well I called GE and found out the mag. is warrentied for 10 years and mine is nine years old so they are sending me kit # wb27x10489 for free...it comes with mag,stirrer,and diode. Thanks for all your help!!! Hopefully this will fix my problem....FYI the number I called is 1-800-437-9283...At first they tried to say I had to have a GE authorized person look at it, but then they got me in touch with the right department and kit is on its way!!!!!!!