GE JTP86S0H2SS - turns off (no power) and later turns back on

After attempting to reheat my coffee for 30 seconds, the microwave completely shut off, as well as the display showing no power. After approximately 45 minutes, it turned itself back on. During the time it was off, the wall behind the control panel felt hot to the touch.

GE Microwave model number: JTP86S0H2SS