I had made the various repairs I described above. My last issue was the hook on the black plastic door latch wearing down and also grooves worn into the white plastic switch holder caused by the black plastic hook. I think it was the lower hook that wore down and I put a piece of wire insulation shrink tubing around the top of the hook. This built up the worn end of the hook and made it wider than the groove in the white plastic switch holder. It worked for a while but I decided to replace both parts anyway. Since replacement, I put some silicon spray lube on the ends of the black plastic hooks and the surface they slide on when you close the door. I just put 1 drop on the end of a Q-tip and wipe the areas every month or two. I probably have done this now for a couple of years and haven’t noticed any wear on the parts I replaced.

I found the schematic and trouble shooting chart folded inside the back of the control panel on my JVM3160DF2WW. Did you find a solution to your fuse blowing problem? Mine is blowing the 20A fuse at first when opened door during cooking. I found the lower left hand bracket for the door hinge was loose (the spot weld broke). I fixed it with a small low profile bolt and a nut with lock washer in a pre-drilled hole behind the door when you remove the door. The door was sagging a bit before the fix but it blew another fuse on startup. I need to check the door switches.