time would count down but unit would not run & heat.
remove cover, unplug secondary door switch (top switch) remove switch from holder, install new switch, plug in wires, replace cover, very easy. door switches are a common problem with microwave ovens.
Used a phillips head screw driver and loosened the lens frame under the microwave. Removed the broken lens and replaced it with the lens ordered. Put the lens frame back in place and secured it with the phillips head screw.
Removed three screws from the top front cover and slide it out and following I removed the touch panel and the housing that holds the switches and replaced the bad one.
All one has to do is use a screw driver to remove the screws, one per lens. Then lower the lens bracket, bend the 4 tabs holding the lens, remove and replace the lens and screw the brackets back in place.
Light worked, timer and control pad worked, but no turntable, no heat, no noises of any sort, just didn't start up
It was a snap using the instructions given. The key is getting into the unit. I did have to use a multimeter to find the failed switch since there are two of that type.
Remove the microwave cover. Requires a phillips screwdriver and a torx security bit/nut driver (there are two security type screws on the back...guess they don't want you to do this at home!). I had to buy the a security bit set (about $7). The diode is easily accessible on the right side under the fan. Requires removing on small phillips screw and unplugging on electrical connection. GE provides some instructions in an envelope on top (after cover removed). There is a warning/instruction to discharge the capacitor before service. This was not a problem for me. Actual diode replacement took 30 seconds. Whole job = 15 minutes.
Microwave would not turn on. Lights and fan worked fine. Before the microwave stopped completely, it would turn the microware fan on even when door was open. I read the reviews and they were exactly the same issue that others were facing. Once I opened the front panel and got to the switches it was easy to figure out which switch was bad as it was the one that was soft (When clicking it). It was hard to take it out though (it seemed stuck). So, I used a plier to yank it out. I put in the new switch and everything worked just great! I would like to thank other comments that were left on the site to make my task much easier. Thank you (to the commenters on PartsSelect), you not only saved me money, but also ensured that I learn about the microwave more and give me the confidence that I could fix it.