• ** 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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WMH73521CS5 first open/close door error, now no power

Mbarn83

Member
Joined
Feb 9, 2019
Messages
1
Location
NJ
Model Number
WMH73521CS5
Brand
Whirlpool
Age
1-5 years
Hi everyone. New here and appreciate your help in advance.

I bought this microwave a little over 2 years ago when I renovated my kitchen. It has a manufacture date of April 2016.

Anyways, this thing has been nothing but trouble since I bought it.

First the range light stopped working. I didn't really care about it so I never tried to fix it.

After 6 months of owning it, I would randomly get the open/close door error. After opening and closing the door a few times it would eventually go away. Sometimes I would have to slam the door closed very hard but eventually it would work again.

Fast forward to today. I got the open/close door error and it wouldn't resolve with my normal techniques. I put a flat head screw driver into the latch switch hole and ended up flipping the latch backwards on both the top and bottom. I opened up the microwave and flipped the latch back into the forward position. Like an idiot, I did this without unplugging the microwave and the power turned off and wouldn't turn back on. It sounded like a blew a fuse. I went to home depot and replaced both fuses but that wouldn't fix the problem. I took apart both the top and bottom latch and removed the microswitches.

This is where I am at. I am wondering if the microswitches are my issue and if so, which one needs to be replaced.

Again, any and all help is appreciated. Thank you.
 

aggiebass09

Premium Member
Joined
Oct 26, 2019
Messages
2
Location
Texas
Hey there,

I had the EXACT same issue. I, also like an idiot, was playing with the switches with a screwdriver and my WMH73521CS-6 also completely shut down. I tried replacing the fuses and it still won't power on.

Did you ever find a way to fix it? I can't figure it out!
 

ineedkitchenaid

Premium Member
Joined
Mar 31, 2020
Messages
2
Location
Seattle, WA
I have the exact same problem with model KMHC319EBL1 !!!

I have to slam the door a bunch of times and it will eventually start working again.

Were you able to find a fix?
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
109,949
Location
McMullen Valley, Arizona
It sounds to me its the door switches that need to be replaced if you have to slam the door a bunch of times to get it to start.

Here's the door switches for your model:

I can check with Rick and see if he agrees.

Jake
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
38,345
Location
Murray, Utah 84107, United States
Yes, sounds like a door switch to me also. Check the door switches for continuity by opening and closing the door.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
109,949
Location
McMullen Valley, Arizona
Thanks Rick,

Can the door interlock supports being cracked or broken also cause this problem?

Here's the ones for his model
(TOP):


(BOTTOM):


Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
109,949
Location
McMullen Valley, Arizona
Got it!

Thanks Rick. (y)

Jake
 
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