Microwave is working perfectly, but it doesn't warm up. Ghasem
Answer Ghasem, No the the inline 20 amp fuse would not be he problem, or the thermal fuses, the microwave would be "dead" if that were the case. Your most likely culprit is a bad control board WB27X10874 or magnatron WB27X10880, if you are not familliar with high voltage, capacitors,transformers,etc. you need to be very carefull, so you don't hurt yourself. Thanks, and Good Luck
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Came home and noticed Advantium SCBC2000CWW display requested that I set the clock ( no problems previously). I set the clock and push the start pad only to hear a slight "pop" and then nothing, no display. Upon investigation I found that the fuse had blown and melted the holder as well. Any ideas as to why this could have occurred? I ordered a new holder and fuses and plan to replace and see what happens. After reviewing the wiring diagram it appears it could be several different items.
Answer Hello Paul,
I would not recommend to put a new fuse and holder in until you locate the short. This can be a component that is internally shorted or it can be a wire or connection touching ground. If you replace the fuse first and apply power, the problem will most likely recur. Yu can locate the short with a resistance meter and the unit unplugged from the wall outlet. Test from each side of the fuseholder to chassis ground on the unit. It will show a connection to ground in one direction. If you disconnect each component one at a time, when you unplug the responsible component, the connection to chassis ground will go to no connection.