Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
No heat. No unusual noise. Appers to function other than no heat
Multimeter checked/confirmed switches, sensors, and fuse first. All good. High power diode was bad - Replaced. Still no heat but now loud "MMMMM" noise when running. This means either the capacitor is also bad and/or magnetron.
Googled problem, removed diode, checked with meter and it was open, ordered new diode, checked new diode and it read open, installed. Any way, it didn't work. Went and bought new microwave!!
After reading reviews that there was no power what so ever and a fuse replacement will solve the problem, I tried it. Replacing the fuse is very easy (and I am not handy at all). All you have to do is remove the microwave cover from the top by removing two screws, slide the cover to the left and pulling the cover off. Then remove the grill in front of you, by removing one or two screws. The fuse is in front of you, use pliers and be firm but gentle. Replacing the fuse is easy but it did not solve my problem.
PartSelect had helpful repair instructions on-line which made the repair easier and faster. Unfortunately, there were other problems with the oven that immediately blew the new fuse I had just installed. It was then determined that additional repair would most likely cost almost as much as a new microwave.
First unplugged the microwave, took top grill off, took control panel off, took wires off and used color coded tape to make sure they went back in right places, took fuse out and replaced it and put every thing back and it all worked fine and to top it off my wife did it all. So it was pretty easy.
Timer, light and control pad worked. Turn table and heat did not work. Oven would not start up.
I first read where someone had the same problem. Their solution was a burned-out fuse. I ordered a new fuse...installed it and that did not solve my problem. I revisted PartSelect and read how Marla (from Arlington, TX)solved her problem. I purchased a secondary switch and when it arrived, I made a copy of Marla's instructions and followed them to the letter. I installed the new secondary switch into the secondary space, put everything back together and the oven STILL DID NOT WORK. I had to take the latching panel apart again and test each switch to see if there was another bad one. I found that the third switch was burned out. So I took the new switch out of the second slot and installed it into the third slot. I tested the switches before reinstalling the latching panel. This time everything worked. So I put everything back together, reinstalled the microwave on the wall, tested it again, and everything worked perfectly.
No heat on convection or bake. other functions operated fine
un plugged the oven. pulled the back cover off (3 screws). the heater terminations were there. removed heater wires. checked heater resistance with meter set on ohms reading was not correct. removed heater found a burned out place. installed new heater in reverse order of removal. works fine. If someone is a fare handy man this was a very simple task to do.
