Small melted hole at microwave door -- doesn't appear to have breached the clear plastic on the interior. Is this dangerous and does this require repair? Thank you so much!

The small plastic plate on the microwaves door with the spring it it needs to be replaced.

get a new microwave unless you wanna die

replace microwave

yes you can buy it the material from the supplier for the microwave parts. special paint for microwaves.God bless you

The microwave oven is not safe to use, the fire has compromised the interior of the oven, if you run the microwave it will start to arc and eventually short out the magnetron, because the white enamel paint has been burned away. If you have holes in the ceiling there is danger of radiation leakage, for safety reasons the oven should be replaced.

That is a waveguide and the cover.
If you let steam of food particles enter the microwave will soon be no good as it will burn a hole in the aerial assembly.
The cover must be clean and fits as you say with a stainless steel screw.
Hope this helps.

Sounds like part of the peg broke off and is left inside the recepter slot area where the sensor switch is. If it is the lower door plastic hook thing (inside bottom) that broke off, it is possible to re-attatch it to the door if you save the broken piece. Drill a small hole the size of a small wire or nail you have lying around to make a splint - Cut the nail or wire to about 1/2" to use it as a hidden "bone" or skeletal support inside the broken plastic. Glue the nail half way into the broken plastic using modelers glue. Closely align the nail peg to where the plastic broke off and mark it for drilling. Drill carefully making sure you are centered so that your wire "bone" will allow proper alignment of your plastic. Insert the pinned piece into the newly drilled hole checking for alignment, if it looks close enough you can glue it in place and you should have a strong enough repair. Dangerous to use a wooden peg to fool the internal switch. As it will be running even when the door is open and you don't want to get zapped.

Fixed this problem! The door latches were greasy and sticking in the closed position (i.e., pushed down so not latching and engaging fully when the door was closed) and this created the problems described above. Solution was to squirt some Windex into the latch holes to dissolve the grease. The switches popped back into position (must be spring-loaded) and the door closed and latched properly, allowing the oven to function properly. I swabbed out the hole with a q-tip, let it dry for 20 minutes and all is well.

A microwave needs all those surfaces to be fully reflective. those scorch marks greatly affect the magnetron. it will soon burn out . reccommend a new microwave.

check the conductivity of the plastic with an ohmmeter by placing the probes an inch apart on the plastic surface. If the resistance is large or infinity, the plastic probably performs no role in stopping the microwave radiation. If so, any epoxy probably can be used to close the hole safely. Make sure you don't use too much and if possible place tape over the repair and orient the microwave so the epoxy presses against the tape while drying to prevent it from oozing into any door hinge/close mechanism. Otherwise, a piece of microwave door glass from a broken unit can ge glued over the hole and should stop the radiation. You can check for leakage with test units but be very carefuly anyway.