MH1170XSB1 Whirlpool Microwave - Instructions

The hard part was trying to find the light bulb locally. The locally sold light bulbs were either too long, not dual element or not powerful enough. So I ordered the light bulb straight from PartSelect. When it came time to install the new light bulb I carefully removed the screw holding the plate in position so as not to loose it in my gas stove. I needed the mirror to line up the light bulb and screw it in. Once it was in I verified operation and closed up the plate being careful not to drop the screw into my gas stove. Problem solved.

Read some instructions and easily found the fuse. Replaced it. Still didn't work. Took control panel off to check door switches. Nothing I read mentioned a second fuse. Tested and it to had blown. Ordered another one. Popped them in. Done.

Remove two screws from Vent Grille, one on either side, and remove one screw inside Vent Grille on right side. Pull Vent Grille off exposing the two Charcoal filters. Remove the two Charcoal filters by hand and replace with new ones. Reinstall the Vent Grille and tighten screws. That's it. I'm not handy (ask my wife) and if I can do it so can you.

The repair was simple. Unscrewed two screws, which held the grille in place and removed old grille and replaced with new grille.

The hard part was finding a replacement grille with the right color. Thank goodness for Google which led me to PartSelect.

I looked up a YouTube video of someone with a similar over the oven microwave. That helped me get into the area behind the control panel where the door switches are. I checked the springs and the cam rocker? The thing that actually hits the button on the switch when the door closes. They were in good condition so I assumed the door switch was bad. There are two so I just purchased one figuring (hoping) that only one was bad. And lo and behold only one was bad. Bing bam boom. Put it all back together and I'm set. Not too difficult. Took a week of work because it takes like 50 days to ship. My kitchen looked like a hurricane after image because of all the parts scattered everywhere.

I ordered the part according to the Model number, inserted the part very easily, (and I am soooo challenged in that area) and now it turns again. :)

replaced vent grille with 2 screws....easy as 1-2-3.

Bracket fit perfect! Quick install! Great service...got the item within a day. Perfect!

The original bulb came apart while unscrewing it from the back of the microwave, leaving the metal screw thread contact still in the socket. Since this is an over-the-range micriwave there isn't enough room to manuever needle nose pliers into the socket to remove the screw thread contact. So this is how we were able to remove it.
Unplug power cord.
Take a standard wine bottle cork and whittle down one end until it fits in the socket. Then, using a bit of pressure push the cork into the socket snd begin unscrewing the screw thread contact until it comes out of the socket. Works like a charm!

replace one of the four rack supports which was melting

I turned off the power to the oven at the breaker. I then removed the side trim pieces by removing the screws located behind the lower oven door. I removed the plastic trim pieces above and below the microwave oven and removed the control panel and slid it into the opening above the microwave. I located the two screws securing the microwave into the frame and began sliding it out. I had to disconnect a small wiring harness and two wires from the microwave that were attached inside the opening above the microwave. The microwave section was the easily slid out, turned on it's side where the turntable motor was accessed by removing the access panel. I pulled the old motor, checked resistance and it matched the new motor. I then checked the old motor by applying 120V to it and it ran FINE! I thought I had the wrong part, but decided to install the new motor anyway. I did, secured the access panel and replaced the microwave in the frame. I reconnected the wires and secured the control panel and tested the microwave...and the turntable works!

Followed instruction already on your website

Replaced bulb by: 1 pulling plug on microwave to make sure not hot - no power; 2 used needle nose pliers with head part about same size that fit inside of socket; 3 opened pliers and held firm against broken metal part; keeping pressure of pliers against broken metal part of light bulb, slowly unscrewed the broken part from socket using firmly held opened pliers. The rest was a cinch...just screwed in new light bulb, plugged in microwave and viola - there was light once again.

I used a Google search to show how to access the area behind the front panel. There was a folded paper copy with a schematic and wiring diagram in that space.Then I used a multi-meter to determine which of the THREE micro-switches was causing the problem. I called your help line and ordered a replacement switch. The switch was delayed in transit so your agent credited me with the cost of shipping.

When the part arrived, it had three terminals instead of two as shown in the on-line picture but that did not cause any difficulty in using it. It took about 20 minutes to remove and replace the old switch.

All seems to be working well now.

Finding which of the THREE switches was the problem was the most difficult part of the repair. All three "clicked" but the defective one did not click as easily. It needed to be depressed more than the door latch can would provide. Old age?

Removed the two screws on top of vent with a phillips screw driver. Lift the vent up and away from microwave. Push down to snap in new vent and replace the two screws you previously removed. Done!l