GE Microwave Ovens - Page 9 - Recent Questions, Troubleshooting & Support


first suspect is the inverter board (power) and magnatron a distant second----in either case the part involved unless an expensive unit is pricey.

GE SpaceMaker... | Answered on Jun 02, 2018


No! this could not be further from the truth, you can buy a microwave test card and check for leakage around the door seals, or take it to a service professional to do a quick test.

General Electric... | Answered on May 30, 2018


Cause 1
If too much current passes through the microwave circuitry, the line fuse will blow. If the line fuse blows, the microwave won’t start. To determine if the line fuse is at fault, use a multimeter to test it for continuity. If the fuse does not have continuity, replace it. In addition, you should investigate and resolve the problem that caused the fuse to blow. If you don’t resolve the underlying issue, the new fuse will blow too

Cause 2

Main Control Board

The main control board might be defective. However, this is rarely the case. Control boards are often misdiagnosed—check all of the more commonly defective parts. If you have determined that all of the other components are working properly,replace the main control board.

Cause 3

Thermal Fuse

The thermal fuse cuts off power to the microwave if the microwave overheats. To determine if the thermal fuse has blown, use a multimeter to test it for continuity. If the fuse does not have continuity, replace it. The thermal fuse cannot be reset—if the fuse is blown, it must be replaced.

Since its a electrical isue cal a liscenced professiona to resolve the issue . Your microwave oven isnt at fault . I belive the supplay to it has issue and would have blown anyway.

GE Microwave... | Answered on May 29, 2018


You are right on the money.
The 'magnatron' (the actual microwave emitting bit) has stopped working. It could be as simple as a blown fuse, a blown rectifier diode or the magnatron unit itself. If you want to have a go yourself, wait at LEAST half an hour after turning off and disconnecting the unit before you take the cover off to check anything. BE AWARE THAT THERE ARE VERY HIGH VOLTAGES BEING GENERATED. Without electrical knowledge and equipment just check the basics

GE Microwave... | Answered on May 17, 2018


Repair the oven or replace it.

GE Microwave... | Answered on May 13, 2018


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GE Microwave... | Answered on May 09, 2018


  • Open internal fuse
  • Magnetron failure
  • Door interlock failure
  • Control board failure

GE Microwave... | Answered on Apr 29, 2018


If you open door and look at upper edge of cabinet it should be there.

GE Spacemaker... | Answered on Apr 28, 2018

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