JT3800SH7SS General Electric Range - Instructions

Very straight forward repair except for removal of the fan mount plate. There are 4 sheet metal screws, 2 of which are obvious and shown in the appliance diagrams, and 2 of which are neither on the appliance diagram nor obvious. These screws are beneath the motor assembly and oriented with the heads between the mounting plate and the top of the oven - about a 3/8 inch gap. Removal was accomplished using a 1/4 inch open end wrench strictly by feel as there is no sight line. Not all that challenging, but still a pain. On reassembly, these screws were reversed so that the head is now on the top of the plate and more accessible.

Step 1, turn off circuit breaker, verify no power at the back of oven

Step 2, remove oven from wall/housing by removing 4 mounting screws, 2 on each side, just on the inside after opening the oven door...this was the most difficult part doing the repair on my own as the oven is a bit heavy...I was fortunate to have a old Workmate 425 work bench that folds/collapses, this allowed me to slide the oven out and drop down about 2 inches...reinstalling the oven I did have to use 2x4s to shim the oven level to slide it back in, with someone to assist this would not be necessary.

Step 3, remove covers to gain access to the blower and sensor

Step 4, remove the sensor

Step 5, install new sensor

Step 6, turn on the circuit breaker

Step 7, test the oven (success, Y, turn off breaker and reassemble all covers, install the oven, secure with the 4 mounting screws, turn on circuit breaker, test one more to ensure of proper operation...N, go to step 8

Step 8, turn off circuit breaker, reinstall original sensor

Step 9, remove blower

Step 10, install new blower

Step 11, turn on circuit breaker

Step 12, test oven, problem resolved, Y, go to step 13, N, continue troubleshooting.

Step 13, turn off circuit breaker

Step 14, replace all covers and reinstall oven, secure with 4 mounting screws

Step 15, turn on circuit breaker

Step 16, test, still operating properly Y, receive hugs and kisses from wife, N, do not make eye contact with wife, take dog for a long walk.

there was one screw holding it on the back wall of the oven. It was easy enough that my daughter installed it with my guidance.

I REMOVED THE TOP PANEL OF THE MICR0WAVE AND THEN REMOVED ONE SCREW TO REMOVE THE CONTROL PANEL. rEMOVED OLD SWITCH. SNAPPED IN NEW SWITCH AND CONNECTED WIRE. REPLACED CONTROL PANEL AND UPPER PANEL.

Removed the old canopy mica, it has tabs that slip into slots on the top of the microwave. Then installed the new part, the tabs are inserted into the same slots.

Remove the ice bin.
Turn the ice maker selection to "OFF"
Use small flat blade screwdriver to open the plastic ears on the electic plug in connectiion
Use #2 Phillips screwdriver to remove the screw on the front left side of the ice maker
Pull the ice maker forward until free of the two studs in the left side rear of the freezer wall
Check to see if the supplied water chute is the correct size for your application, if not remove the water chute from the old ice maker and place it on the new one.
Place the new ice maker in the freezer connecting the slots on the left read with the studs on the left wall
NOTE; IF THE ICE MAKER DOES NOT APPEAR TO BE LEVEL HORIZONTALLY REMOVE IT AND CAREFULLY REINSTALL IT TO ACHIEVE LEVEL
NOTE: ENSURE THE WATER DELIVERY TUBE RESTS IN THE RECEIVER TRAY
Reconnect the electrical plug ( needle nose pliers may be helpful in aligning the male plug with the female plug)
Move the selector from "OFF" to "ON"
Replace the ice bin and close the freezer door

DISCONNECT THE POWER CORD and discharge the capacitor
Leave unplugged overnight
Remove vent grille by removing the 2 philips screws
Remove the LED panel by removing 1 phillips screw
Disconnect all connectors that plug into back of the LED board completely
Remove the wires from the switches (3) at the inside edge of the microwave door
Gently remove each switch housing and test all three switches for continuity
Carefully replace non-functioning switches and reassemble the panel
GOOD LUCK

I replaced the TCO (fuze) through the vent opening after removing the vent cover and several small panels with a screw driver for visible access.. Some of the screws require a small offset screwdriver because of the limited access. I did not have to drop the unit from the wall over the range and was able to access through the vent opening to replace to failed TCO with a new one. The TCO is wired in-line with the power and other fuses to the unit and when it fails the enitire unit is cold with no power to lights or function of any kind. The GE service rep. said that the unit needed a new smart board but that was not the problem and they are no longer made for the older unit. I discovered the repair by looking at YouTube for repairs for the GE Advantium 120 microwave/convection combo unit.

Part just snapped into place and wires were reattached.

Unscrewed the control panel (2 screws), lift up and let hang, with a plan screwdriver open bracket holding the switch, unplug 2 wires, replace with new switch, plug in the 2 wires, push switch back into bracket. Then slide on the control panel, put the 2 screws back. Easy fix.

-unplug
-remove top and front covers
-unplug wire connectors from heating assembly
-remove heating assembly from metal stand and push out of the way
-remove metal stand from dry
-pull out heating assembly
-install new one in reserve order

Slips in easily. Line up the tabs with the brackets and pop in.

I first read where someone had the same problem. Their solution was a burned-out fuse. I ordered a new fuse...installed it and that did not solve my problem. I revisted PartSelect and read how Marla (from Arlington, TX)solved her problem. I purchased a secondary switch and when it arrived, I made a copy of Marla's instructions and followed them to the letter. I installed the new secondary switch into the secondary space, put everything back together and the oven STILL DID NOT WORK. I had to take the latching panel apart again and test each switch to see if there was another bad one. I found that the third switch was burned out. So I took the new switch out of the second slot and installed it into the third slot. I tested the switches before reinstalling the latching panel. This time everything worked. So I put everything back together, reinstalled the microwave on the wall, tested it again, and everything worked perfectly.

With this model, you must remove the outer covering. Don't try to access the display unit from the front like I've seen in some other GE microwave videos. After removing the outer covering, the switches are easy to replace. They are very visible and easy to get to without taking any other parts off. You will see the door switches just behind the display board. Remove the switch and then remove the connecting wires to ensure you don't inadvertently brake a wire. You will need a tamper resistant star bit to remove 3 or 4 screws from the back panel. All other screws are philips head. I went ahead and replaced both switches (yes...there are two of them) and works like a charm. I saved an $800 microwave for less than $60 and know what to do if it happens again. Appears to be a common problem on this model. Thanks for others making a post...It saved me time and money reading others remarks. Good luck!

unplugged power
removed main black cover.
located part WB24X10047 and replaced