The faceplat wont attatch. I've opened it up and

After tearing apart my microwave, I found a little spring broke off the latches. Open the door to the microwave, pop off the plastic piece that the latches on the door go through. You will see a spring behind the latch. If the spring is not connected to the latch it won't operate properly. The spring was held onto the latch with a tiny plastic piece that broke off. An easy solution instead of buying a new latch is to heat up one side of the spring without burning yourself and melt it through the latch piece where it was originally connected then put everything back together.
Hope this helps,
Pillarair