WMH73521CS6 No Power even with new fuse, first had open/close door error

[aggiebass09]

Model Number

WMH73521CS6

Brand

Whirlpool

Age

1-5 years

Hey everyone,

My WMH73521CS6 was having an open/close door error for a while that would intermittently work. One day I decided to try to take a look at the switches. After I was playing with the switches (none of them were physically broken), the microwave wouldn't power on. It's plugged in, there is power at the outlet, and no breaker was tripped. I also replaced the fuse twice.

What else could keep this from powering on? Is there some safety mechanism that toasted the microwave?

Thanks!

 

[Jake]

Hi aggiebass,

Here's the parts diagram for your model:

WMH73521CS6 Whirlpool Microwave Parts & Free Repair Help - AppliancePartsPros

Original, high quality parts for Whirlpool WMH73521CS6 Microwave in stock and ready to ship today. 365 days to return any part.

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I'll see if Rick can assist you on your microwave. He and Jeff are much better at them than me.

Jake

 

[rickgburton]

I'll need to see if I can locate the tech sheet and wiring diagram. I'm not familiar with that model.

 

[Jake]

I found it Rick.

I'm attaching it below.

Jake

 

[rickgburton]

Thanks Jake! aggiebass09, you'll need a DMM to take voltage measurements. You replaced the fuse twice indicates you probably don't have one, correct?

 

[rickgburton]

Jake, there's no wiring diagram

 

[Jake]

I just asked if bigbuck has it.

Jake

 

[rickgburton]

OK cool! Thanks!

 

[bigbuck]

Here you go guys.

 

[rickgburton]

Awesome BB! Thanks!
@aggiebass09 check for 120 VAC coming out of the noise filter. Then check the door switches for continuity. Be sure to remove the wires from the switch first.

 

[BlueNostromo]

While the microwave was powered on I manually triggered the top switch on this unit, light came on then everything quickly went dead. No signs of life, any remedy?

 

[BlueNostromo]

Looking at the troubleshooting sheets above I will check for a fuse on the filter board

 

[Jake]

Hi,

Rick has been out sick since Jan.12th with a serious illness, we are hoping and praying for a speedy recovery!

Rick is our Microwave expert, so unfortunately you'll have to wait for him to return or hopefully another tech. or another member that's run across this problem, can help you here.

Jake

 

[BlueNostromo]

Wow! Hopefully all is going well and he is getting better.
---

I tried installing a fuse but it blew immediately. I may try unhooking the door sensor switches and seeing if any short is resolved.

 

[Jake]

Wow! Hopefully all is going well and he is getting better.

Thanks, we all do too!

I tried installing a fuse but it blew immediately. I may try unhooking the door sensor switches and seeing if any short is resolved.

Yes, good idea.

Jake