M457B01 General Electric Microwave - Instructions

This support hook was a bit different and we hope it will not melt when it is on bake cycle. Had to put the hook in place

remove cover-unplug wires from secondary switch-remove switch-snap in new switch-plug in wires-replace cover-works great. very easy to do.

Opened the microwave oven door, unscrewed two screws which held the control panel on, then I removed two of the door switches (each had two screws), and then used the continuity tester to see which one was not operating. It turned out to be the secondary door switch, replaced it and to my amazement, the microwave worked. I have never repaired an appliance before but I didn't want to replace our over-the-stove built in microwave. It was the best day ever when it was working again! The hardest part was getting myself to try the repair.

Getting the old bulb out of the socket was not an easy job as the factory seals the base of the bulb to the socket and for what reason I do not know. The seal has to be broken away to remove the bulb. I broke the seal with a knife and then proceeded to unscrew the bulb. The bulb at that point shattered in my hand and I was left with just the base of the bulb stuck in the socket. it took much effort to be able to work loose the base with a needle nose pliers and much sweat. The installation however went very smooth and Part Select did a fine job of sending me the right part in a very short period of time. They are a great source for any appliance part needed.

undid plate exposing bulbs. Bulbs were blown to the extent that I could not see the size or wattage. Went to website, got the data ... including how to find the model and serial number plate, entered the info, looked at the exploded drawing, ordered 2 new bulbs and 3 days later they showed up at our door FedEX.

removed access panal, found soft switch as discribed on your web site. removed and replaced.

Removed the microwave with the buit in housing from the cabinet. Removed microwave from built in housing. Removed outer cabinet giving access to remove control panel and smart board where switches are located. Removed control panel to get to smartboard. Removed smart board after disconnecting a few wires to allow easy removal. Individually removed and then tested each switch using multimeter. Found seondary Door Switch (bottom of smart board) operation to be intermittent (switch trip button extremely loose and rattle inside this particular switch) Ordered replacement part which came very quickly on standard shipping order. Put new switch on smart board and remounted, reinstalled control panel and reconnected various wire connectors previously disconnected. Then plugged in oven and tested for opertation - didn't work at all! But, after bleeding off capacior charge by removing connectors and discharging capacitor to ground, then reassembling control board and smart board into oven, then trying agian, it has worked perfectly ever since. Do not understand why capacitor disconnect/discharge was required but suspect this reset the control electronics. Easy fix and hope to get another 12 years out of this appliance which is used multiple times every day. Also have two other identical micorwave ovens, one is 20 years old, but these get used relatively infrequently.

Followed suggestion by previous poster to remove bottom panel...facilitated process well

First, unplug microwave. Unscrew two screws at top of microwave, slide grill cover left and remove. This allows access to single screw holding control panel. Remove this screw and lift up control panel to remove. Secondary door switch is black switch at lowest position. The switch is held in place by a lever in back and very hard to get to. Remove the wires plugged into the switch, then remove two screws holding the plastic switch mount that holds all three switches. These screws use a "star" type screwdriver. Once the plastic mount is free, lift it up, right, and tip it slightly to find the lever that will release the black secondary door switch (the lowest switch)...release the broken switch, snap the new switch in its place. Replace the plastic mount by lifting and replacing back into position and replace the two "star" screws. Now, replace the wires onto the new switch, and test operation. Replace control panel, and top grill. It goes faster than it writes...getting the old switch out through that difficult to reach lever was the hardest part...still less than thirty minutes.

Because the microwave is old and the bulbs, I believe, had never been changed I carefully tried to unscrew the bulb. However, when I went to unscrew the bulbs the end of the bulb broke off and remained in the socket. I used a few different tools then remembered that sometimes a raw potatoe can be used to unscrew the remainder of the bulb, but to no avail. Finally had to unscrew the whole underside of the microwave to remove the broken bulb. May I suggest that you have the socket face away from the wall to screw in the bulb instead of the socket pointing toward the wall. You need to know yoga just to manuver the bulb into the socket.

simply to install new bulb. Unscrewed the under the microwave lamp door with a screwdriver. Inserted new bulb into socket. good to go

unscrewed cover, took old bulb out, screwed new bulb in.relaced cover.

Removed the one phillips screw that holds the light lens in place, drop the lens down for access to the burned out bulb, screw in the new bulb, replace the lens.

Took screw holding lens cover out, dropped cover down, unscrewed old bulb, screwed new bulb in socket. Screwed cover back in place. This is the third bulb in this socket, the other bulb is original.

Easy as can be. Removed one screw on the glass cover, removed two burned out bulbs and reinstalled two new bulbs, reinstalled the cover and all is well now. The best part - my 'supervisor' is happy that she can see to cook again!