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WM2780B Jenn-Air Microwave Oven Combo - Instructions

All Instructions for the WM2780B
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Replaced the heating element
It would have been a very easy job if the one wire had not fallen inot the back. I could not reach it and fried to figure out how to get in the back to no avail. Finally I took a piece of wire coat hangerm and bent it and then fished it out. The packing around the hole compressed while I was trying to get the wire and I thought I wpuld have to replace it, but overnight it resumed its original size. It should have probably taken less than thirty minutes.
Parts Used:
Bake Element
  • Paul from Newark, DE
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    More than 2 hours
  • Tools:
    Screw drivers
1 of 2 people found this instruction helpful.
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Oven would not heat
Flipped off breaker and removed oven door and pulled built in stove out so the back panel could be removed. Unplugged the sensor then removed the two screws securing the old sensor inside the oven and installed new sensor. Put stove back together and installed back into counter top, re-installed oven door, flipped on the breaker and oven works like new.
Parts Used:
Long Oven Sensor
  • Ralph from Nicholasville, KY
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
1 of 2 people found this instruction helpful.
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Top oven element works, but bottom element works only intermittently
Replaced the long Oven Sensor but have not resolved the root problem. Oven still will not reach required temperature. Bottom element becomes red hot, but turns off and will not start again.
Parts Used:
Long Oven Sensor
  • Bruce from Glencoe, MN
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Screw drivers
2 of 5 people found this instruction helpful.
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worn door seal on oven
takes two people to put the oven door back in place but otherwise very simple as long as you keep all your screws and pads in place
Parts Used:
Oven Door Seal
  • Sarah from Albany, GA
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Screw drivers
1 of 3 people found this instruction helpful.
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burned oven bulb
The hardest part was taking out original light bulb because screws on shield where hard to unscrew after all this years . The old bulb vent out leaving neck in socket. It took narrow electrical pliers to get neck out .The generic appliance bulb did not fit and had aluminum neck ,not recommended for brass sockets in ovens.Putting new light bulb in was not the problem.
Parts Used:
Light Bulb - 40W
  • Ivanka from Atlantra, GA
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Pliers, Screw drivers
3 of 9 people found this instruction helpful.
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oven light burnt out
1. Unscrewed glass cover on bulb
2. Removed old bulb
3. Screwed in new bulb
4. Replaced glass cover
5. Mixed drink & baked cupcakes
Parts Used:
Light Bulb - 40W
  • William from Schwenksville, PA
  • Difficulty Level:
    Easy
  • Total Repair Time:
    Less than 15 mins
3 of 9 people found this instruction helpful.
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The oven door seal was frayed, due to using oven cleaner.
First I removed 7 screws, using a Philips head screwdriver, to allow access to the inside of the oven door. I then removed several more screws to separate the panel holding the seal so that I could remove it and replace it with the new seal. Once the seal was in place I re-inserted all the screws to the panel and door to complete the repair. The knobs just slipped on to replace the ones that broke and fell off.
Parts Used:
Oven Door Seal Clock Knob - black
  • Robert from Decatur, GA
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Screw drivers
8 of 25 people found this instruction helpful.
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Oven temp would not get above 200
downloaded instructions from your website on how the part went in the oven, ordered part, and installed when it got here. shut off the breaker (found out it was mis-marked in my breaker box!) undid two screws, pulled off two clamps reinstalled and we were baking by dinner!
thank you!
Parts Used:
Bake Element
  • eleanor from baton rouge, LA
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
0 of 1 people found this instruction helpful.
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Varying heat
Removed two screws, unplugged the old unit, plugged in the new, screwed the new in. Job done. Would have been less than five minutes if I hadn't kept dropping the screws.
Parts Used:
Long Oven Sensor
  • Kimbel from Rhoadesville, VA
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
0 of 1 people found this instruction helpful.
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not heating/kicking oven off
Husband got on partselect.com and read reviews, we ordered a long oven sensor kit. When it came in the mail, I took it out and look at it, decided I could probably switch the part.... and so I did. Easy Breezy ... and it worked well
Parts Used:
Long Oven Sensor
  • Kevin from Virginia, IL
  • Difficulty Level:
    Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
0 of 1 people found this instruction helpful.
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element was burned out
remove old one and installed new one quick and easy thank you
Parts Used:
Bake Element
  • Gary from chardon, OH
  • Difficulty Level:
    Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Nutdriver
0 of 1 people found this instruction helpful.
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light bulb went out in my oven
My husband took the plastic cover off and took out old bulb and screwed in the new one. Then put the cover back on.
Parts Used:
Light Bulb - 40W
  • Janet from Ada, MI
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
2 of 7 people found this instruction helpful.
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Getting codes and beeping
Control panel was responsive however oven would not heat up. I Replaced sensor with one of the adapters and oven is now working again.
Parts Used:
Long Oven Sensor
  • Arthur from Dallas, TX
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Pliers, Screw drivers
1 of 4 people found this instruction helpful.
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Oven temperature lagging set temperature by almost 100F
Removed frame to cabinet lag screws
Slid oven out of cabinet (required because wire harness could not be pulled through inside of oven)
Removed two screws holding attaching sensor inside oven
Uncoupled wire harness
Installed new sensor in reverse order

Unfortunately, neither the new bake element or sensor fixed the problem, so I just ordered the more expensive control board -- hope that does it.
Parts Used:
Long Oven Sensor
  • William from Edgewood, WA
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Pliers, Screw drivers
0 of 1 people found this instruction helpful.
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50 year old oven racks in bad shape
Parts no longer available so we went to several appliance stores and measured racks. We found a jenair model had racks that measured correctly got the model number and ordered the racks. There working great and now the oven looks like new. Our kitchen is a restored 1956 GE metal kitchen in Cadilac pink. Thanks guys for the fast service and very resonsble price. Was also very happy to find the racks were made in USA.
Parts Used:
Oven Rack
  • GREG from PETALUMA, CA
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
0 of 1 people found this instruction helpful.
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All Instructions for the WM2780B
76 - 90 of 154