Mw8992rd seems to be working fine except won't heat food. timer, touch pad, inside light, carousel all work fine. tried different times and power levels but still no heat.

Touch Timer/Clock pad and number 2 pad.
Enter the correct time of day by touching the numbers in sequence.
Touch Timer/Clock pad again.

Sometimes the switch in the door latch sticks. Mine did that and I ust closed the door with just a slight more force and everything started working fine.

Have you checked the diode could be feeding back through and limit current.

Hello, Thank You for using FixYa. I will be helping you today.If the buttons are not working replace the touch membrane. I would list the part number but you didnt give full model number.
Thank You and please rate my answer if it was helpful..

Touch STOP/CLEAR pad.
Touch TIMER/CLOCK pad.
Enter the correct time of day by touching the numbers above in sequence.
(for example: for 12:30, touch 1 2 3 0)
Touch TIMER/CLOCK pad again.

hello. i can help you.

When the microwave sounds okay, but there's no heat, one of the internal door switches, the high voltage circuitry, or the circuit board may have a problem. To resolve this problem, you need the assistance of a qualified appliance repair technician.

if everything works except the heating, it is most likely the mag tube is on its way out.........that is the most common reason for it not too cook.......since the microwave is a GE and it is 3.5 years old, i would say you are better off buying a new microwave, the mag tube starts at around $70.00 and up + the labor it costs too have a service person put it in........around another $60.00

you may have gotten a power surge and that can cause some funny things to happen, 1st is there power to the oven, 2nd if so there may be an internal fuse protector built in to the oven, check with the manual for anything of that sort listed. if not you may have to take it in and have it repaired by a pro. there is a lot of voltage in these ovens and unless you know what you are doing a person could get hurt

I have the same problem. Everything seems to work except it doesn't heat up food.
I remember last time when it was working. I pressed the start botton before I closed the door. So it didn't start automatically, and I pushed start and it worked(it still heat up the food), but it doesn't work now. Help Please!!!
I have a Whirlpool Gold GH5184XPQ.

Thanks in advance

One of your door interlock switches is defective . I would suggest having it repaired by a qualified repair tech in your area.