GE Spacemaker XL1800(JVM1850CF001) - Loud Humming noise

GE Microwave Not Heating Replace Magnetron WB27X11079

GE Microwave Won Heat High Voltage Diode WB27X10597

Microwave Diagnostic Has Power Not Heating GE General Electric Hotpoint...

There are other videos with possible causes and solutions on YouTube.

The diode that connects to the capacitor needs to be replaced. Once its replaced microwave will begin to heat again. (If it wasn't heating and wasn't making a humming noise, then your magnetron would need to be replaced). If you are thinking of doing it yourself and need instructions, i'll be glad to help.

I have the same problem. A repair person said that he thought it was the megatron (whatever that is) He suggested just using the microwave until it quits.

Sounds like the magnetron circuit has failed. It is the part that generates the microwaves that heat the food. It often shorts out, and makes a loud humming or buzzing noise when it fails. It's not usually cost effect to replace since the part alone can cost as much as a new oven.

Hi


Thanks for using FixYa. If it’s a loud hum/buzz sound then 90% it’s usually a bad magnetron and other times it’s a bad high voltage diode. However, from what you have described it seems to be the magnetron. Please do rate the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

magnetron problem DON'T KNOW IF WITH FIXING - WOULD LIKE TO KNOW MYSELF

look behind front control panel. there is a tech sheet. you can trouble shoot this problem, but you may need a voltmeter and an amp meter. it sounds to me like the high voltage transformer is bad or not working. it helps power the magatron. the hum is the mag trying to work, but it doe'nt have the high voltage it needs. this unit new sells for appr. $350.00.

shorted HV diode,or shorted wiring in transformer

I agree that the light is unrelated. 99.9% chance you have a bad magnetron tube but it is covered by either a 5 or 10 year parts warranty through GE. Call GE Factory Service at 1-800-432-2737 or schedule online at www.geappliances.com

does it buzz loudly or make loud noises