Models > MH7140XFB0 > Instructions

MH7140XFB0 Whirlpool Microwave - Instructions

All installation instructions for MH7140XFB0 parts

These instructions have been submitted by other PartSelect customers and can help guide you through the microwave repair with useful information like difficulty of repair, length of repair, tools needed, and more.

All Instructions for the MH7140XFB0
31-45 of 165
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Bought a used microwave with no mount.

  • Customer: brady from Salt Lake City UT
  • Difficulty: Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers
  • 13 of 20 people found this instruction helpful
I found the part number for the mount on the appliances company website. Once I had that I visited a few sites looking for part. This site was easy to use and priced right, so I ordered. A few days later the product arrived as promised and worked perfectly for the install.

burned out bulb

  • Customer: john from plainfield IL
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 11 of 15 people found this instruction helpful
removed two screws,lowered the glass shield,removed the burned out bulb and replaced it with the new one. I ordered the bulb from parts select and recieved it two days later. It was a pleasure to deal with them, and certainly use them again.

Wolud not heat or cook anything.

  • Customer: Wayne from Wingate NC
  • Difficulty: A Bit Difficult
  • Time to Complete: 30 - 60 mins
  • Tools Required:
  • 11 of 17 people found this instruction helpful
Instead of telling you, i have question do you have any instructions on how to do the repair. It would have helped save time on the repair.

This job took longer then it should have, becasue I did not start right in the begining. I did figure it out quickly after the wrong start.

You were a big help in picking the right part to correct the problem. You should be able to help with the repair. Thank You

My microwave began suddenly making a loud humming noise while cooking food.

  • Customer: Lindsay from Nampa ID
  • Difficulty: A Bit Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Nutdriver, Screw drivers
  • 61 of 169 people found this instruction helpful
My microwave began suddenly making a loud harsh humming noise while cooking food. I did not let it go on long enough to know if it cooked the food or not. I did some Internet research and learned that it was likely the Magnetron. The test for this was to run the microwave for at least a minute on the lowest power setting and see if the noise cycled on and off. It did, so I (actually, my wife) ordered the part from partselect.com using the model number. I was successful in replacing the part, and we are back to microwave popcorn and quick defrost for a price that was less than a service call, however, it was time consuming, required a large work area, and access to 5 out of 6 sides of the unit. So proceed at your own discretion

Caution:

The first thing in every set of repair instructions was to discharge (short-circuit) the capacitor, as it may store large (as in lethal) amounts of electricity even when it is not connected to a power source. I had never done this, but found these instructions:

“Discharging your microwave's capacitor is absolutely essential in preventing injury to your microwave, your tools, and yourself. A capacitor stores a large amount of electricity even when your microwave is unplugged, and it must be discharged before beginning any repair.
A capacitor is discharged by creating a short circuit between each of the two capacitor terminals, and between each terminal and the chassis. The chassis is the metal mounting (bare metal surface) of the capacitor. Read these directions thoroughly before you proceed.
With your microwave unit unplugged, touch the blade of a well insulated screwdriver to one terminal. Gently slide the screwdriver forward until it reaches the other terminal, holding it there for a few seconds. Be aware that this often results in a loud and startling 'POP'.
Repeat this procedure in order to create a short circuit between each capacitor terminal and the chassis (bare metal mounting plate surface). This same method can be applied to a capacitor having three, and not two, terminals.”
I had not run my microwave in over a week, and then while my part was shipping, left my microwave 'unplugged' for more than two days, and my capacitor apparently discharged itself, although I did go through the above procedure carefully and completely - just in case.
Step-By-Step:
1. You must remove your microwave from the cabinets - it is impossible to repair otherwise. This is best accomplished with 2 strong people - my wife and I made it work, but wished for another guy.
a. While supporting the microwave, remove the two screws coming down through the cabinet above.
b. Lift the rear of the microwave as much as possible, then tilt the front down - there is a clip high on the left side, as well as the hinge/clips on the bottom.
c. If you do not lift it off the wall all at once, you may have to lift the rear even farther to remove it from the hinge/clips on the bottom.
Important Note: Always beware of the microwave door, if it is bent or broken and cannot retain a seal, the microwave not function as a safety feature to keep from releasing microwaves.
2. Remove the vent cover on the top/front of the microwave - be careful, it's plastic.
3. Remove the vent cover and light panel on the bottom of the microwave - this is several screws and some simple wire clips.
4. Remove the "shell" (top and sides) of the microwave - this is several more screws on the back. Make sure to remove the plate that is holding the cord in place on the top.
5. Remove the interface panel by the screws on the top (which had been hidden by the vent cover) - the wires can remain attached, just slide it aside.
6. Remove the metal cover on the right side at the rear; this will expose the Magnetron and the Capacitor. Remember to immediately test and discharge the capacitor!

7. After you discharge the capacitor, remove the other cover plate and the support bracket - in case you haven't noticed, this is a time and space consuming operation.

8. You

broken door frame

  • Customer: perry from dacula GA
  • Difficulty: Easy
  • Time to Complete: 15 - 30 mins
  • Tools Required: Screw drivers
  • 5 of 5 people found this instruction helpful
Removed screws and broken door frame. Removed glass cleaned and installed in new frame. Snaped new frame in place and replaced screws.

Needed to Replace the Front Vent Cover

  • Customer: MICHELE from ROSEVILLE CA
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 4 of 4 people found this instruction helpful
I didn't have to remove the old cover since it cracked and fell off the microwave already. I simply snapped in the new vent cover, screwed in the 2 screws and I was done. Super easy.

Broken vent cover

  • Customer: Anthony from Robinson IL
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 5 of 7 people found this instruction helpful
Unscrewed the remaining pieces of bracket slipped in new vent cover and attached with the two screws. Very easy since the web site showed where the vent attached. I saved over $60.00 doing this repair myself!

Existing tabs on plastic vent grill had broken off

  • Customer: Roland from Kissimmee FL
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 4 of 5 people found this instruction helpful
Removed screws holding the broken grill tabs with a phillips screwdriver
Removed broken grill and all broken tabs that fell into the vent area
Cleaned area where the new grill was to be placed
Inserted new grill onto the appropriate tabs and tightened the screws

BE CAREFUL as the tabs on the grill are thin and fragile when you insert the new grill don't force it into the slots, I used a knife as a way to slide the grill into place.

the grill vent broke

  • Customer: Clemencia from Naples FL
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 5 of 8 people found this instruction helpful
just matched the holes for the screws after remove them from the microwave, then applied the new grill and put the screws in place again DONE

light bulb burned-out

  • Customer: Pablo from Burlingame CA
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 7 of 14 people found this instruction helpful
screwed in new bulb

The thing that makes the plate rotate was missing

  • Customer: Kim from MILTON WV
  • Difficulty: Easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 3 of 4 people found this instruction helpful
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. :)

I broke the grill b/c I thought it snapped on and off, not.

  • Customer: Cynthia from Oceanside CA
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 3 of 4 people found this instruction helpful
I removed the two screws and took off the old grill. Snapped the new grill in place and replaced the screws. This model was not shown on the list but the part fit just fine. The part arrived in 2 days! I ordered the white one and at first didn't think it matched .. maybe my microwave was bisque or almond .. but after 15 minutes of scrubbing I realized it was white but just real dirty .. lol. Now the door opens without the grill falling off. Easy fix.

The plastic screw brackets had broken on the original model.

  • Customer: James from Battle Ground WA
  • Difficulty: Easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 2 of 2 people found this instruction helpful
Removed the old vent grill by removing the two screws and put in the new one.

Replacing the cracked door handle

  • Customer: Ron from Maricopa AZ
  • Difficulty: A Bit Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Screw drivers
  • 2 of 2 people found this instruction helpful
We had to take off the black inside frame of the door in order to get to the screws which held the handle on. Getting that piece off was a real challenge for fear of cracking the plastic around the edge of the door.....it wasn't very easy. Once we got that off, the rest of the repair was simple, and replacing the inside frame went very smoothly.

Vent grille was broken

  • Customer: Eugene from Tampa FL
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 3 of 5 people found this instruction helpful
Removed the two screws hlolding the old vent in place. Discarded the old vent. Snapped the new vent in place and attached with the two screws previously removed.
All Instructions for the MH7140XFB0
31-45 of 165