All Installation Instructions for General Electric Microwave JE740WH01

Started with a burning smell and eventually no operation at all.

Took the screws out that held the oven case on. Looked around and found a connection on the oven cavity thermal cut out the plastic melted and black looking. I knew this was the problem but I checked the fuse anyway and the fuse was good, so I ordered the part from part select and they shipped it out fast and now my microwave is working again.

Parts Used:

Oven Cavity Thermal Cut Out

Butch from Gulfport, MS
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers

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Microwave worked but oven fan came on when door was opened - should onlly come on when oven is operating.

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.

Parts Used:

Secondary Door Switch

Gerald from Mountain View, AR
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers

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Microwave came on when door open

Turn off main power bracker. Removed fan vent, removed control panel, disconnect leads to the three monitor switches. Replaced the secondary switch (top). Reversed procedures.

Parts Used:

Monitor Door Switch

Secondary Door Switch

Barry from Navarre, FL
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers

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Oven failed to heat food.

Remove the microwave cover. Requires a phillips screwdriver and a torx security bit/nut driver (there are two security type screws on the back...guess they don't want you to do this at home!). I had to buy the a security bit set (about $7). The diode is easily accessible on the right side under the fan. Requires removing on small phillips screw and unplugging on electrical connection. GE provides some instructions in an envelope on top (after cover removed). There is a warning/instruction to discharge the capacitor before service. This was not a problem for me. Actual diode replacement took 30 seconds. Whole job = 15 minutes.

Parts Used:

Diode

Jeffrey from Gaithersburg, MD
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver, Pliers, Screw drivers

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Microwave stopped working and nothing would show on the display...completely dead. Wife had just heated two separate items, one for about 10 minutes and one for about 6 minutes. Mircowave was hot to the touch.

I googled "Microwave stopped working", and after reviewing numerous websites with suggestions, I found the response noted below at "Help Owl" which was the most straighfoward and clear explanation to trouble shoot the problem. I first tested the Thermal Cut Out (TCO) per the instructions below and that was the problem. I didn't have to test the electrical fuse. Turns out that you cannot typically use the microwave continuously for more the 12 or 13 minutes or it may overheat and the TCO will shut it down. Extremely easy to test for and fix, and the part is only $15! See Trouble Shooting steps as follows: Make sure that the unit is vented properly and that if you are using it for prolonged periods while cooking, that you turn-on the vent fan.
If there is no display / power within the unit...first check your power source where you plug the unit into the wall.

If that is good, Remove the Cabinette/Cover "Note: it has 3-Torx Anti-Tamper Screws".

Then as you face the microwave from the rear, at the left rear corner is a small circuit board with a fuse. "Check the Fuse"

If the fuse is good, Check the following:

1 - The most common component failure is the "Cabinette TCO" (Thermal Cut-Off Thermostat).

As you face the microwave from the rear...It is located under the cover, on top, on the left front corner area.

It is a Circular, Black & Silver Disc Shaped component about the size of a dime in diameter and is about 1/2" in height.

It has Two (2) Wires attached to it's spade connectors and it acts as a safety fuse.

"IF YOU PUT AN INSULATED JUMPER WIRE ACROSS THE 2 TERMINALS THE POWER SHOULD RETURN AND THE DISPLAY WILL LIGHT"

Anything other than these two items should be checked by an Authorized Service Technician as these microwaves have components thay carry "HIGH VOLTAGE SHOCK HAZZARDS"

Parts Used:

Oven Cavity Thermal Cut Out

Robert from The Woodlands, TX
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers

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One of the rollers on my turntable guide became squared so that the roller wheel would not turn.

I opened the box, took the turntable guide out and put it under the microwave plate.

Parts Used:

Turntable Guide with Rollers

Nancy from Inverness, IL
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins

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Light worked, timer and control pad worked, but no turntable, no heat, no noises of any sort, just didn't start up

It was a snap using the instructions given. The key is getting into the unit. I did have to use a multimeter to find the failed switch since there are two of that type.

Parts Used:

Secondary Door Switch

Timothy from Middletown, NJ
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers, Wrench set

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Oven Cavity Thermal Cutout Open

Remove cover-the hardest part, as I needed to buy a new set of driver bits that included the dimpled security drivers to remove three screws. GE includes schematic and troubleshooting flow chart with the unit, taped inside the cover. Required more time to look up the part on-line and order it than time used to make the repair.

Parts Used:

Oven Cavity Thermal Cut Out

Marion from Coupeville, WA
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers

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Microwave would not turn on

I removed the cover this required a special star Apex tip witha hole in the center. $10 for a set at Lowes.Replaced the fuse and Thermal cut out at the same time. The oven woks like a charm.I would like to add that GE customer service was no help basically told me that it was a throw away unit. If they built it you can fix it.Hope this helps any DIY breathern outthere.

Parts Used:

Oven Cavity Thermal Cut Out

Bill from Lexington Park, MD
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers

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Unit would not come on.

removed access panal, found soft switch as discribed on your web site. removed and replaced.

Parts Used:

Secondary Door Switch

Phillip from Umatilla, FL
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers

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would not turn on - plug in and would shut off right away

thank you very much.

Parts Used:

Monitor Door Switch

Secondary Door Switch

Vita from Flagstaff, AZ
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers

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lost roller turntable guide

Installed new one. I do not know if these rings can be repaired

Parts Used:

Turntable Guide with Rollers

ruth from pawleys island, SC
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins

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Not heating

Removed the above stove microhood. Removed the side panels & the top panel. Diode located on right hand side of microwave. Removed with screwdriver & replaced new diode. It's best to get the microwave schematic online to pinpoint location of the part.

Parts Used:

Diode

Debra from Concord, CA
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Nutdriver, Screw drivers

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turn table motor failed

1. Using wire cutters, cut out sheet metal cover over motor on oven bottom. The stamped bottom is retained by the four corners which were not cut in the stamping. 2. Remove and replace motor. 3. Replace motor cover with supplied screw. (failure symptoms: turn table vibrated before it stopped completely.)

Parts Used: