Door latch and Screen

Yes, operative limit switches inside the unit are activated by the latch, without the latch in place, the unit operates as if the door is open.

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clarkco

Hello there sometimes this could be the door latch because on some microwaves they microwave wont let you use it in till the door is shut but with the latch missing i knows the door isn't shut, you could try putting something small in the hole where that latch goes and see if the display lights up ( DON'T TURN ON MICROWAVE WITH DOOR OPEN) ie like a small screw driver flat head of course, if you cant get it to light up dont worry in till the door get there then you will know for sure if its a separate problem

Hope This Helps Cheers

This is because of the broken latch. There are switches inside the oven that are operated by the door latches to make sure you're not trying to use the oven with the door open. With the new door, your oven should be back to normal.