Microwave stops and starts - KitchenAid KBMS1454RSS Microwave Oven

Could it be the fan?

the pads are touchy its probably been white knuckled too long

Sounds like the control board. Not many parts in a microwave oven. That is the only one that generally goes intermt

holding the stop / clear button for 5 seconds or the start button for 5 seconds usually works,
see this link
http://www.fixya.com/support/t8306273-unlock_digitals_butons

replace magnetron

Hello

Microwaves use alot of power and should be on their own 20amp circuit. Get an electrician to put the microwave on its own circuit.

John

A quick test. Switch off power then remove outer cover. Look for the transformer. remove the two wires connected to the primary side. Note, do not toutch anything else. power still sitting on the cap. With those two thin wires disconnected, make sure they are not toutching each other or leaning on the metal frame. Set a program that has been a problem and let it run. If it still stops and does what its not supposed to do, your board needs replacement.

H!, its either you have a defective magnetron, hv transformer or a leaky capacitor.

to trouble shoot hold the door securely shut for longer than 5 min to see if it runs longer if it does the you should replace the interlock devise