M457B01 General Electric Microwave - Instructions

The replacement of the light no problem, the reason the light broke; problem. The original was glued in (for transport i think) and simply trying to unscrew it out (in a very tight slot) it broke; be careful or you’ll be buying a new $20 bulb (with shipping and handling).

Most of the effort is simply getting the oven out of the built in enclosure and the sheet metal off. This take about 15 minutes then you have to remove the two screws (not handy location) that hold the door latch/switch assembly so you can remove the switch. I did this BEFORE ordering so I could test the switch (it was charred) and verify the part needed. WATCH OUT - some ovens use a normally open an some a normally closed version of this switch - you have to get the right one. I checked several suppliers that were showing the WRONG switch for my model. PartSelect had it right. Once I received the switch I had it on and the oven installed and running in less than 30 miutes. Working fine since then...

Un screwed the cover but when i tried to remove the bulb it was broken at the base. I disconnected the power and used neddle nosed pliers to remove the base

Took the front panel off, played with the switch while it was plugged in to verify the switch was bad. I actually was able to tweak the switch just right to keep the microwave working while the part was being delivered. When it came it was just removing two small screws and replacing. Very easy.

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

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

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!!

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

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.

.Thank You Dan

I found an exploded view diagram of of my microwave model which was very helpful. You need only remove outside metal skin by removing 4 screws on either side and 4 more on the back. Remove 4 plastic hole plugs from the top mounting inserts. Gently pull sides out and lift up and back to remove outer skin. The fuse is located on the back right corner behind the control panel. You access from the side. The fuse is under the spreader bar. Lift fuse up gently to remove.

P.S. It was the MSP Capaciter and or the interlock switch, snap apart 21A (19) failure that actually caused the ceramic fuse to blow.

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