I have a Panasonic Model #NN-S255 microwave oven. The button you push to open the door does not open the door. It's like there is no resistance when you push the button therefore it does not push up the latch hooks. I opened that compartment and there are no visible broken pieces inside. The microwave works perfect except for this. I don't want to have to buy a new microwave just because the door latch isn't functioning properly. Can you help?

Hello,To get the door open and salvage your dinner, take a long thin blade ( I used a frosting spreader) and insert from the bottom between the door and the oven frame on the side with the latches (usually next to the control panel). You may have to pry the bottom of the door open just a bit. The object is to push up the lower door latch (which is connected to the upper door latch) and manually open the door. You may have to try a few times but this worked perfectly for me and saved dinner. Obviously the door latch needs to be repaired but this solves the immediate problem of dinner being held hostage by a recalcitrant microwave.
wish you good luck,
take care.

Hello & Welcome to FixYa
I believe as the fuse is fine and everything works fine so the problem is with the door switch that is bad and needs replacement. If you want you can test the switch before replacement. Please get back to me if you have any other questions.
Kevin

Likely this part failed because the door hinges have got a bit out of line, allowing the door to drop slightly, so the catch mechanism won't quite disengage. So, your part has broken or slipped out of place.

Unplug the unit and remove the cover. If the latch has popped out of the slot you can put it back, you will have to open the door to do this, just lift on the door hooks and you can open it, or replace it. Try to find this part replcement in this link repairclinic.com/PartDetail/Open-Lever

NOTE: In any case, don't touch the capacitor, 20000 volts there and can kill you.

Hope this helps.