How to Troubleshoot & Replace Bosch AP5804845 / 00648813 Microwave Door Interlock Support

Had to identify the real issue by reading DIY threads. Found the door switch went bad after 1.5 years. To confirm I had to replace the fuses with the door open, turn the power on and close the door. If the display went out, the door switch is bad and blew the fuse again. Mine did just that. I replaced all three switches and the bracket holding them. Brackets are plastic and will break when removing the switches. After replacing and putting a new fuse, microwave worked again. 

I found several similar stories on AppliancePartsPros website related to this type of Bosch Microwave power failures, so I called their customer service to make sure that I ordered the correct parts for my repair. The agent was EXCELLENT and went above and beyond by checking all available parts diagrams to verify the parts I needed. Of the 3 switches in the door closing mechanisms one of the 2 on the left side of the microwave (as you look at it) was bad and the 1 located on the opposite side was bad. I needed 2 of the switches with a red button and 1 with a green button. (1 each red+green on left / 1 red on the right). Do get the supports for each sides switches. I ordered both and wound up using one for right side when pin that switch goes on broke. Also the fuse that blows is located in right rear corner of unit (there are 2) 1 was good / 1 bad. In addition to removing top of unit removing control panel allowed better access to switches. A lot of screws to remove but overall an easy repair. 

After 6 visits from repair technicians, I was frustrated and ready buy a new unit. I did some research finding this site, and found others who had similar problems. I also checked my micro switches for the oven door based on this forum, with the power off, performed the door check by replacing the fuses, turning the power on with the door open. The control panel powered on, I shut the door and it immediately blew the rear fuse like others stated. I ordered the fuses, the two mounting brackets and the three micro switches for less than 75 dollars delivered. It took me about an hour to change the switches and replace the covers. Powered the oven up and now it works. Saved 2000 dollars. Thank you to others for sharing their solution. 

One of the Door switches went bad, so I decided to proactively replace all 3 door switches. Make sure to order support brackets as well, as I think it's impossible to replace switches without breaking the original bracket. For a few $$, it's not worth the hassle. Interestingly, in my case, fuse that's internal to Microwave did not get blown, only main line breaker would get tripped, but I would be doing it again, I would also order spare fuse as well. Here is how I determined that door switch is bad. With MW door open, main breaker would stay ON and MW display would light up. Once the door is closed, main breaker would be tripped, cutting the power to the MW. 

I replaced all three micro switches as well as the plastic supports. I'm glad I ordered the supports as the plastic tabs broke removing the old switches. All the new parts fit perfectly and work as original. 

Defective door switch. Installed new switch and all is well. Putting new switch support definitely helps as the plastic tabs break easily removing the old switch. 

Ordered parts that I received next day via expedited order. Replaced and returned to service. 

Replaced 2 microswitches,door interlock support,20 amp fuse 

The comments on the site helped my ID the problem, and the parts ordering made it clear what I needed. Saved our oven and saved us $$$. 

Google search informs me that it is likely bad switches on the door and a blown fuse. Got the parts from AppliancePartsPros.com for about $65 and it was an easy 20min fix! The repair shop had quoted me $480 to come to my house just to diagnose the problem! I offered to take the unit to them and they reply they only do house calls. Thank you AppliancePartsPros.com!