Microwave Switch

• Doesn't shut off
• No heat
• Won't start

The first symptom was our microwave would continue to run after the time was up. The light would go out, the turn table would stop but you could still hear the microwave running and whatever was in it would continue to cook. The only way to stop it was to open the door. It was intermittent at first but eventually it would always run no matter what as long as the door was closed. Several other posts referenced these switches as the problem. I just replaced both and problem gone. It turns out... Read more

After checking other reviews, we decided it was best to replace the interlocks, cam and all three switches. You're going to need a phillips screwdriver, star driver, small screwdriver and needle nose pliers. You need to remove the ONE Phillips screw above the control panel inside the vent. The contol panel is on hinges that you can slide up and towards you. Using caution remove the wires noting how they're connected. Pinch the top of the white connectors and wiggle them free. We couldn't get... Read more

After checking other reviews, we decided it was best to replace the interlocks, cam and all three switches. You're going to need a phillips screwdriver, star driver, small screwdriver and needle nose pliers. You need to remove the ONE Phillips screw above the control panel inside the vent. The contol panel is on hinges that you can slide up and towards you. Using caution remove the wires noting how they're connected. Pinch the top of the white connectors and wiggle them free. We couldn't get... Read more

After checking other reviews, we decided it was best to replace the interlocks, cam and all three switches. You're going to need a phillips screwdriver, star driver, small screwdriver and needle nose pliers. You need to remove the ONE Phillips screw above the control panel inside the vent. The contol panel is on hinges that you can slide up and towards you. Using caution remove the wires noting how they're connected. Pinch the top of the white connectors and wiggle them free. We couldn't get... Read more

Check fan operation and was OK. Everything else worked except when microwave was started for a cycle. I looked around on internet and found someone had trouble with the door switches. I started to check door switches and found one shorted. I replaced both lower door switches and it took care of problem. Read more

Removed and replaced 3 door switches and mounting bar that holds switches plastic gets brittle with age and each switch comes out slightly different from each other, the chances of breaking a mounting pin is very easy. care should be taken when snapping mounting bar back into place to insure top latch and bottom latch locate properly insure bar is proper aligned when tightening screws their is free play in mounting bracket that could affect door properly engaging switches. NOTE that their are... Read more

Check fan operation and was OK. Everything else worked except when microwave was started for a cycle. I looked around on internet and found someone had trouble with the door switches. I started to check door switches and found one shorted. I replaced both lower door switches and it took care of problem. Read more

I'm a 56 year old divorced woman. I started doing these kinds of repairs to save some money and honestly, to see if I could. So yes, if I can do it, it's not that tough to do. My microwave is built in above the stove - getting it down and back up was the hardest part of the job. An extra pair of strong hands really helps-for anybody, not just a 56 year old woman. The actual repair was pretty easy. Most likely problem was pretty obvious after a little research. Easy to take off cover, get... Read more

Checked the three door switches; used ohm meter to see if there was resistance or if a switch was bad. 2 out of 3 switches showed resistance with the ohm meter. The last one tested (of course the last one) NO (normally open) did not show resistance; I.e. the ohm meter reading did not change when the switch was depressed. Appliance parts pros was the only company that had the same model number I was looking for (SZW-V16-FD-63). I ordered the relay switch, 2 days later it arrived (regular... Read more

It is difficult (if not impossible) to remove the electronic switches from the hard plastic latches. I replaced all three switches and both the upper and lower latches I also replaced the main 20 amp ceramic fuse which blew out when the latch/switches failed. Read more

• Won't start

First, it was going to cost $95 for an appliance guy just to look at it! I figured there would be an upcharge on the parts + labor on top of the $95, so I took a chance & decided my husband & I could fix it cheaper; we were right, but it was a 3 week process (luckily, we have another microwave in the basement we were able to use in the meantime). I googled the microwave model #, then price checked the same item I thought we needed; printed off the diagrams of the various microwave "systems" &... Read more

It took a long time to determine the problem but eventually I discovered that the plastic bracket (latch hook) that held the three door-switches showed appreciable wear from repeated door openings and closings. This wear stopped the door from sealing properly and the door switch safety mechanism blew the line fuse. I replaced the worn bracket (AP6230612) as well as the plastic latch mechanism (AP4553585) on the door that engages this bracket (and of course the fuse too) and the microwave now... Read more

I diagnosed this problem via the web and the advice was spot on. The problem was a failure of the bottom door switch. I used a multimeter to verify that the switched never closed properly. It took me a minute to figure out how to remove the old switch (press a release tab under the switch while simultaneously rotating counter-clockwise). That was about the most difficult part of the repair. Read more

Knowing the odds of 2 failures occurring at the same exact time was unusually high, I just searched your site for what other broken items might affect these two failures. Came up with next control item upstream and tallied that item failure with percentages of successful repairs, (4 mins.) door safety switch. Since I had to change out the most likely of the 3 and since I was already was going to be into the switch panel I ordered all 3 and swapped them all out to cover my butt, as they were... Read more

Checked on AppliancePartsPros and found the parts, once I received the parts I pulled the outer cover of the microwave and replaced the three switches. For the price of the three switches it was cheaper to install all new. Total repair time, 15 minutes. Microwaves back up and running. Very easy fix. Read more