• ** REMEMBER! **The microwave can still shock you even unplugged!!

    ALWAYS discharge the high-voltage capacitor first if you even think your hands will come close to any HIGH VOLTAGE components.

    Jeff mentions this: Anything in the high voltage ( magnetron, capacitor, diode, wires to and from ):
    ...Use a metal ( not the shiny chrome type ) screw driver with a insulated handle to short across ( touch both at the same time ) the terminals of the high voltage capacitor to discharge it.

    From Jeff's site: http://www.applianceaid.com/component-testing.php

    Jake
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FIXED JVM1630WFC01 GE Replaced Breaker Fuse/Thermal Fuse - Can't turn fan OFF

iLoveLobster

Premium Member
Joined
Jun 9, 2020
Messages
4
Location
Toronto, Canada
Model Number
JVM1630WFC01
Brand
GE
Age
1-5 years
I had some issues with my microwave turning on and checked to see what was blown out by following this YT video.

What I've done:

- Checking every component in that video for continuity deemed the fuse/thermal switch blown out.
- All interlock/door switches seem fine as I got a signal for continuity.
- As the topic says, I replaced these, was able to power on but can't seem to turn the fan off while in the OFF position.
- Once microwave is powered on the fan is automatically on (I think the speed is equivalent to the LOW setting).
- I can cycle through the fan modes but OFF doesnt turn off.

Parts I replaced with:

Breaker(?) Fuse: partselect.ca/Models/JVM1630WFC01/
Thermo Switch: WB27X1127
 

jeff1

Appliance Tech - Moderator
Staff member
Joined
Oct 10, 2004
Messages
24,839
Location
Ontario, Canada
Hi,


That is a thermal fuse. If this was installed for the fan thermostat ( which is open and closes if the bottom of the microwave gets too hot ) the fan will stay on.

Your model is Canadian so most parts and breakdowns are not online.

jeff.
 

iLoveLobster

Premium Member
Joined
Jun 9, 2020
Messages
4
Location
Toronto, Canada
Sorry I'm a bit dense here @jeff1 . Does that mean I ordered an incorrect part?
 

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jeff1

Appliance Tech - Moderator
Staff member
Joined
Oct 10, 2004
Messages
24,839
Location
Ontario, Canada
Sounds like it. If your new part is closed ( has continuity ), then yes it is incorrect.
The fan thermostat should be open ( no continuity ).

jeff.
 

iLoveLobster

Premium Member
Joined
Jun 9, 2020
Messages
4
Location
Toronto, Canada
Thanks @jeff1 - looks like thats exactly what I did and the original0 part that deemed faulty actually was working.

Before I close this, the only other issue I am having is a rattling when the microwave is on. When the fans are on, I hear no rattle.
 

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