Frigidaire FGMO205 Microwave not heating


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Old 07-09-24, 07:23 PM
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Question Frigidaire FGMO205 Microwave not heating

I have a Frigidaire FGMO205 Microwave not heating, Only 5yr old.

Display and buttons work, light works, turntable turns, internal fan works. But no heating.

Took cover off. Checked all regular fuses and thermal fuses (1ohm).
Removed door switch assembly, disconnected all wires and checked all switches worked OK.
Put assembly back and made sure the latches are closing the switches OK.

Not sure what else this can be apart from HV side? Magnetron, cap etc

Thanks
Marc
 
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Old 07-09-24, 11:23 PM
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Please double check and post model number from ID tag.
 
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Old 07-10-24, 02:18 PM
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Old 07-10-24, 04:59 PM
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I should also add its sound has changed. More of a labored sound now. The internal fan and turntable are working though so not sure where the sound is from.
 
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Old 07-10-24, 05:29 PM
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When a microwave is started... it takes a second or two for the magnetron to start.
You can hear when it starts.
If you set the unit to low or medium heating... the magnetron cycles.
Also very noticeable when it restarts.

Check for 120vac TO the transformer first when it should be heating.
Transformer, capacitor, diode and magnetron.
Be very careful working in the high voltage area. Make sure to discharge cap.

There are dozens of videos on you tube for magnetron testing.


 

Last edited by PJmax; 07-10-24 at 05:34 PM. Reason: changed text
 

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