• ** 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

FIXED Advantium blowing thermal fuse

Brian Degnan

Premium Member
Joined
Mar 3, 2016
Messages
4
Location
Boston, MA
Model Number
PSB9240DF1BB
Brand
GE
Age
1-5 years
I have a 240V Advantium Microwave Combo that keeps blowing the thermal fuse that is attached to the magnetron. I've had the microwave for over a year, but it's only been installed for 3 months. The thermal fuse was replaced three times by a technician, and then I decided to look into the cause because it's obviously the symptom of something greater. The thermal fuse blows like clock work if the microwave is on for 2 minutes because the magnetron gets too hot. There exist a squirrel cage fan and damper assembly.

I have never seen the fan turn on. My questions are:
1 Should the fan turn on when the magnetron is running?
2. If not #1, when should it and how does it know.
3. Is it something else entirely?

Any advice would be welcome. I'm currently keeping a stock of thermal fuses. :/
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
33,988
Location
Murray, Utah 84107, United States

Brian Degnan

Premium Member
Joined
Mar 3, 2016
Messages
4
Location
Boston, MA
The circulator motor is not getting 120V. I assume that it's the relay board then. I know that 2 of the other items on the relay board are getting power, so I guess that would point to a bad relay on the board. Things are too noisy to hear the "click". Could you point me at the part number of the relay board?
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
33,988
Location
Murray, Utah 84107, United States

jeff1

Appliance Tech - Moderator
Staff member
Joined
Oct 10, 2004
Messages
23,697
Location
Ontario, Canada
there's an error in the GE documentation
Nothing new ;) :D
Thankx for the tip!

jeff.
 
Top