How to Troubleshoot & Replace Bosch AP4566527 / 00617230 Microwave Door Interlock Switch

I changed the filter module and the 3 door micro switches and their holder to be safe. 

Open the microwave and found the 20 amp glass fuse blown. Checked all three door switches and one had failed. Replaced switches and replaced the fuse and everything worked perfectly. 

Replaced all 3 door switches and it worked. It actually was the Middle Switch but I replaced all 3 anyways. Switches are not expensive. 

The middle Door Switch was actually bad. Replaced all 3 switches any way's. Going to order another set of switches and bracket just for a spare. Service was fast and the FedEx delivery. 

I replaced the door switches and the holder for the switches. I probably did not need all of the switches, however I wanted to rebuild the entire assembly so as I would not have to replace them one at a time. You could replace just the switch that is bad, you would need to take it apart and test each switch to determine which one is bad, then order that switch, so you would need to take it apart twice. Watched a video on YouTube on the replacement of the switches, the parts were all correct from AppliancePartsPros.com Thank you. 

I replaced the 3 safety switches in the door jam. Total cost for the 3 switches was $35. Although all of the switches tested good, using the test procedure I found inside the microwave as I took it apart, the switches were apparently INTERMITTANT! The contacts in the switch would apparently stick, causing a short, so the timing of all switches didn't work in sync intermittently. After replacing them, all is good.