M457B Microwave - Instructions

Remove top air grate via 2-screws. Remove metal top panel behind grate that's above bulb via 1-screw. Bulb is exposed and can be un-screwed. DONE

Really easy for a 75-year old female; just spent more time reading the online manual than actually installing the light bulbs to find out where to access the light bulbs.

I purchased the fuse and 3 door switches from PartSelect. Replaced the fuse first but that did not solve the problem. Then I replaced the 3 door switches and problem solved!! So fuse only cost $5.00 so glad I have a new fuse in there as well. To see how to replace door switches see videos on utube!!

UNPLUG MIRCOWAVE.REMOVE THE HARDWARE, COVERS, AND DECONNECT THE CONTROL PANEL. REMOVE AND REPLACE VENT THERMOSTAT. REINSTALL EVERTHING IN REVERS ORDER. WORK FINE NOW. ADVISE IF YOUR FIRST TIME GET INSTRUCTIONS ON INTERNET SEARCH OR YOU TUBE

Piece of cake. One screw to release the dropdown light diffuser. Just remember, the you're screwing the new bulb in from a reverse perspective. Also this site sends the correct part the first time.

Unscrewed numerous screws holding the "body/shell" to the microwave. Removed body. I then unplugged top door switch, replaced it with new one, and "tested" the new one. I fixed our $400 convection micro with an $18 switch. NICE!

GE slate microwave approximately 2 years old. Completely dead. Power to outlet was good, no gfci was tripped. Started checking fuses, 250v ceramic fuse good, two fuses at the bottom behind the control panel. One on the left labeled 12 on the diagram tested no continuity. One on the right labeled 13 tested good with continuity. So i figured number 12 was bad. Got the part and turns out to be the wrong fuse. Part number was the same but the terminals were the wrong size. Im pretty sure GE has the diagram labeled wrong because i ordered number 13 and it was the right size. Just an FYI if you are ordering those fuses for your microwave that 12 and 13 on the diagram may be reversed. Anyway received the right fuse and tested the new fuse and it tests open continuity and did not fix my issue. Microwave is still dead. There are two other fuses in the back that i need to check so hopefully i find the issue. Hope this helps someone, remember one fuse behind the control panel tests open and the other tests closed and thats how it is suppose to function.

I took the cabinet off and saw where the switch had been burnt. So I remove it and order another one from your company. And I put new clips on it with heat shrinks. We might get another 30 years out it, Although I'm 80 years old.

Removed control panel disconnected old capacitor installed new and returned the leads back on to the new. replaced control cover and tested

Turn off power supply at breaker . Replace old bulb with new bulb .

Unplug appliance. Remove total of 7 phillips screws from sides and front of bottom panel . Panel front drops down, remove one socket screw and socket. Now have access for lineman' s pliers to unscrew bulb base. Reinstall socket, replace bulb and 7 panel screws. Restore power.

We needed a phillips head screw driver to remove the single screw holding the light bulb cover in place.
Removing the old bulbs was a little work, because they had come loose from the sockets. We unplugged the microwave, so we could grip the sockets with a tool. I think my husband used a needle nose plier for this.
The new bulbs screwed in easily, and then we refastened the light bulb cover with the phillips head screw driver.

Placed the screws in the proper areas, used the screw driver to tighten down and I was in business with light to spare. I am happy to have found the proper screws.
Thank you.

screwed in new bulb

.Thank You Dan