Food warming time

It may need a reset. You can do that by unplugging the power for a minute or two, then plugging it back in and setting the clock.

If it still fails, you may have a failing cooling fan or a problem on the control circuit board.

oh ya man the heating coil is damaged so you have to change it.

on some machines you must enter the time before the unit will turn to on mode

Chances are the magnetron is failing, or you have a bad connection at the magnetron.

Hello everybody !!! I 've found capacitor in poor condition !
The one was renewed to resolve the trouble.

Consensus opinion seems to be a bad magnetron tube. Unless this an expensive model, it might be better to just replace the whole machine. It takes expensive test equipment to service one of these machines and repair costs support this.

The unit is failing. Probably the megatron tube. IT can pass quickly or slowly. I had a Sharp that lasted about a month before conking out on me at a most in opportune time: Dinner for 8 and it was late! Take caution. Start shopping.

either the h.v. diode, h.v. capacitor,thermal switch,or the magnetron tube are faulty

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

Typically, no heating of food, indicates a bad Magnetron (tube) or associated components. Yes, it can be repaired. Magnetrons are not hard to replace and can be ordered online through MCM electronics. Please let me know if I can be of further assistance to you.

Good Luck,

- Jim