M457B Microwave - Instructions

changed the bulb

Just unscrewed the screw holding the lens, unscrewed the bulb and put the new bulb in. Simple

With many thanks to those who posted their experience and advice replacing the bulb, I was able to remove 5 of the 6 screws holding the underside panel and remove the socket which contained the broken off base of the bulb and extract it with needle-nose pliers. I had broken off the glass portion of the bulb trying to unscrew it due to the awkward contortion of my wrist-hand-fingers trying to grip the bulb inside the tight recess the bulb is mounted in. After concluding that I needed more information, I did a web search for 'Hotpoint RVM1435' and found helpful advice at partselect.com telling me to drop the bottom panel. Good call! Thanks everyone!

so easy, but how do i turn light off?

Part recieved next day. thanks so much

Removed one screw lowered glass cover removed burned out bulb replaced with new one put glass back reinstalled screw. Dune 5 minutes back in business

My son=law did repair because I am elderly and it was necesary to remove the bottom plate of the microwave which I was unable to do. The microwave was installed in 1987 and I believe this was the first time to replace the bulbs. When my son removed them the bulb was diintergrated. That's how old they were. Once he was able to remove the underneath plate the repair was easy except for removing the old bulbs. I think that I could have done it myself but he was available and I am sure it was done much better. All in all the parts)bulbs) were correct and everything is workiin fine. This is a good place to order replacement parts. In fact I am going to order a new charcoal filter. He took the label off the old one and I am ordering the replacement. After all 1987 may have been a good year, but time for a new one. Mary

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

removed the lens cover with one screw and replaced bulb

Open compartment, installed bulb, closed compartment

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.

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.

I didn't do the repair -- my husband did, said it was easy, had no problems what so ever! The new bulbs give a lot more light to the cooking area.

You had alerted that it was imperative to unplug unit before starting to remove defective bulb. As described, there was silicon on bulb and socket and bulb broke upon my attempt to remove. Had to use needle nose pliers to get metal base of old bulb from socket, then all went well.

Replaced light bulb.