JES1288SH001 General Electric Microwave - Instructions

After looking up on the computer a schematic of the unit, all that was needed was removing four screws to remove the top and side cover which was one piece.
Next was removal of electrical connection to burned out lamp, then removing burned out lamp and installing the new lamp and reconnecting electrical connection.
Job was complete after reinstalling the cover.

Microwave now working with new lamp lighting when in use.

Continuity checks showed the flame sensor was open. Schematic notes it opens at 217 degrees and closes at 30 degrees. Removed sensor and placed in freezer for twenty minutes. Tested sensor and it was now closed, reinstalled and microwave worked normally. Ordered new sensor in case the original is operating at too low a temperature.

I took the cover off and followed the electric current to see if it got as far as the display.
I did not get past the thermostat shut off where the current stoped. I jumped the thermostat and the unit worked. The part was so inexpensive that I decided to replace it rather than try and freeze the old one in hopes of "reseting" it.

removed cover and tested fuse, fuse ok, check flame switch (thermostat) bypassed it with thin wire ,all power on!!...ordered it, got it, replace it within 5 min, as soon as part arrived.

Door microswith was stuck on. This is caused, I discovered, by frequently stopping the oven, while running, by opening the door rather than using the stop button. Causes the switch to arc and eventually fail. This causes the safety microswitch to trip the breaker when door is opened. There are little nubs sticking up on the spade connectors. You must squeeze them down before you can remove them from the switch. The main door switch is the upper one, mounted at an angle. You have to remove the latch assembly to remove the switch. The problem was obvious once I got the switch out. This problem could also blow the fuse, but in my case the breaker tripped first. Use an ohmmeter to check switch and fuse. The door switch is normally open. The safety switch is normally CLOSED. Instructions inside were helpful and described this problem. So, avoid this repair by always stopping oven with stop button!

I happen to have a set of "security" screw driver tips which are required for this appliance - available for about $10 at Home Depot or Harbor Freight. Remove three security screws from back of housing, lift up and aft to remove the cover. The light is on the left in a "snap in" mounting so use a flat blade screw driver to push back the retainer and lift out the old bulb then disconnect the two "push on" wires and install the new light. Total time about 10 minutes. The only issue is the requirement for a security driver set.

Traced out 120volts from neutral to hot though fuse, and "high limit" switch screweed to far side of oven exterior cavity. High limit thermostat was "open". Jumped it out to see if unit would produce heat. Melted 1/2 cup of ice in thirty seconds. Ordered new part. Later foud out hi limit can be "re-set" by subjecting it to sub-freezing temperatiures. This is true, but I installed new part just to be safe. Machine is working fine now and has been in daily srvice for over two weeks.

It pays to troubleshoot a broken appliance before thinking about buying a new one. I removed the cover and found the manufacturer's circuit and troubleshooting diagrams inside. The fuse was good, next in line was the flame sensor. Meter showed it was open, so I knew that was it. Disconnect the wires and screw, replace part, replace cover. DONE! I knew I had the right part from the pictures on PartSelect's web site. Total cost under $20 compared to ten times that for a new one. Had the part in two days.

Simply pulled out the wave guide cover and inserted the new one. No tools needed. I had Googled what caused the microwave to spark and that led me to Part Select. I received my part in one business day!! Awesome service.

removed 3 screws to take off outer housing ( did not have proper screw driver but was able to remove with pliers). used flat head screw driver to pry light socket w/bulb off of snap-in mounting & unplugged socket wire attachments. plugged in & reattached new part.

Removed the three screws holding the cover on. then rmoved the two wires from the capacitor. Removed the screw holding the end of the zener diode to the chassis. Removed the diode from the capacitor. installed the new capacitor and replaced the blown fuse then reversed the removal process.

Fast & easy. I was able to determine that this foot would work from the descriptions on online!! Thanks

1. Remove trim kit - Philips head screw driver
2. Remove Microwave from the wall - Philips head screw driver
3. Remove outer microwave cover - required tamper proof torx bit drivers
4. Replace Magnetron thermostat. On this model there are 2. in this case it was on top of the unit tied into the wiring harness to the main panel.
5. Reinstall microwave and trim kit

Went on line and saw the Video - very simple to follow - very easy to remove and install the new switch -- went like a breeze!

they had everything I needed, friendly service, fast shipping, no problems