FPBM3077RFB Frigidaire Microwave - Replaced fuse and thermal fuse, now fan is constant. How can i fix this?

[justsomedude]

Model Number

FPBM3077RFB

Brand

Frigidaire

Age

1-5 years

I have a model no. FPBM3077RFB Frigidaire microwave

Microwave kept popping the breaker, then stopped working all together. So I took it all apart and checked for continuity in all the fuses, and the door switches. Everything checked out besides the thermostat fuse ( KSD1 40/70) (no continuity between the terminals) so I bought another one that was described as a "Frigidaire Microwave Transformer Thermostat" and says KSD 130 on the back, tested it and it was good. I also replaced the blown fuse 20amp 125v with a 20amp 250v replacement. I double checked my connections, I checked the fan fuse for continuity with my multimeter and its good. The microwave runs great now, operates as if normal but the fan wont turn off.

The fan will adjust from high, medium, and low, but once i press the off button it still stays on a low mode. I have no idea what to do from here? Any help appreciated. Thank you!

 

[justsomedude]

...looks like I'm alone on this one. I bought another thermal fuse approved by the company and a fan fuse as well. I'll be swapping them both out and hoping that it may fix the problem.

 

[justsomedude]

I'll probably unplug all my connections as well and put them back in. I'll maybe post if I resolve the issue...maybe not being that I'm talking to myself.

 

[Jake]

@rickgburton is the expert on Microwaves, he should be here shortly.

I know nothing about microwaves or I would help you.

Jake

 

[justsomedude]

appreciate the comment nonetheless. Have a good night.