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Samuel
May 8, 2024
Overhead light under microwave won't turn on, despite new bulb.
For model number MMV1174FZ2
Hi Samuel, thank you for the question. We suggest you take a close look at light socket to check whether it is not faulty. If it is fine, then you will need to replace the control board, part number PS12074830. We hope that helps!
Arching sounds inside and had to unplug, sounds like electrical, what do you suggest?
For model number MMV1174FZ2
Hello Albert, thank you for reaching out to us. Check the door interlock switches, part number PS12584166, and part number PS12584167. Faulty door switches can lead to arcing noise, especially if they're not making proper contact. We hope this helps.
The nightmare was that this microwave is installed under the cabinet....in order to get to the light bulb I had to pull out my stove then squeeze into the space between the stove and counter....my old microwave light bult was much easier to change.....Shame on Whirlpool for making this so difficult.....must be a better way to cover the light bulb so that we do not need a screwdriver to remove the door to get to the light bulb
This was an over-the-range microwave/hood, so the replacement parts were significantly cheaper than buying a new unit.
Take microwave down (really a two-person job). Remove microwave cover (about 20 philips screws), discharge HV capacitor by shorting terminals to microwave case. Take photos before pulling anything apart. Remove plastic ducting covering part of the magnetron (3 philips screws). Remove old magnetron (4 Torx screws), need to disconnect small thermostat on side (2 philips screws) and replace with new magnetron. Replace HV diode (screw on one end, other end simply plugged into capacitor terminal). Put everything back together and it works fine.
