JVM190K01 General Electric Microwave - Instructions

At first I tried to use pliers to unscrew the base,very uncomfortable working position,upside down and backwards(the microwave is installed over the range top)very limited space for your body and arms to manuver and you really cant see the base,all of this took place after the breaker was turned off ofcourse,finally figured out that you can drop the entire bottom housing of the microwave by unscrewing 6 screws and the light sockets are easily accessable once you lower it,take out 1 retaining screw ,remove the entire socket and unscrewed the broken base and replaced the bulbs,I said bulbs,there is no sense in having to replace another bulb in who knows how long since only one had burned out but they were both the same age

There are 4 thermostats (aka TCO = Thermal Cut Out) in the GE JVM1440BH04
The schematic is under the cover in a black envelope to the top left of the unit if you face the door.

Check the fuse first. You can remove the front grate, then the numpad on the right. The fuse is right behind it. It's a 250V 20A Class F fuse.

There are four (4) TCOs or Thermal Cut Out thermostats in this puppy:

1) There is a thermostat behind the button panel to the left, facing down. If blown, it breaks the power coming into the unit and will cause a no power situation.

2) There is another TCO or thermostat near the top lamp, to the left, in a small cavity. That one also breaks power to the unit and will cause a no power situation. It's a 100 C / 0 C thermostat. This was the one that blew on me after I left the stove running (for heating in a black-out) under the microwave.


"Cavity TCO" or "Thermostat" part number 61 on the schematics, part number PS239319


3) There is yet another power-breaking TCO or thermostat in the cavity behind the fan that cools the microwave coils. You have to remove the sheet metal on the right of the microwave to access it. This one also breaks power and will cause a no power situation.

1), 2) and 3) should test out to be 0 Ohms with a resistance meter (Digital Multimeter) if working correctly.

4) There is a thermostat which normally does not let current through it. It is mounted in a vertical position to the back wall behind the front panel on the right. This one is used for the sensor reheat function apparently and will close when the temperature in the microwave reaches approx. 60 C.

4) should have infinite resistance with a resistance meter under normal circumstances.

First, I waste $65 by calling some "REPAIR" service. They showed at home and charge me that just to tell me
Second, I researched on the web and ordered a part, which was not the issue. I waste abnother $72
Third, I found Part-Select and got the right answer: the Diode was the problem. Ordered the part form Part-Select and it FIxed it !!!

Note: I did not buy a new microwave because this one is mounted on the wall and it will cost me +$800 just the lowest price.

Loosen screw holding glass cover plate in place over bulb. Glass cover plate will swing down. Unscrew bad bulb, replace with good bulb, reset glass cover and tighten screw.

Had trouble isolating the problem, so I had a repairman identify the problem, then I ordered the part and replaced it myself.

Removed screws holding the grill in place. Removed air filter, removed screw holding plate under the filter in place. Reached in under fan cowling to find the thermostat cut-out. Disconnected the two wires. Put the new thermostat in place. Replaced screws plates and filter in reverse order.

PS240270
Ceramic Fuse - 15 Amp
Easy installation , remove microwave cover housing ,locate fuse by door catch & replace..
Received quickly..
Replaced fuse , removed microwave cover housing , located fuse adjacent door catch removed & installed new fuse...

Removed the broken pieces of the microwave floor and placed the new one in, careful that the gasket didn't slip off.

Repair, not the problem. It was getting the correct filter. Under filter is "grease" not "air" filter. So first time an air filter came. Returned to GE. Found out GE doesn't make the size needed for 2001 model any longer --just bigger. Then connected to PartsSelect, they had right filter for the right model. Came and didn't fit. Returned. While getting return OK, very helpful individual kept checking and realized larger size was sent and did find the correct size. It was sent and fit. Your customer service was extremely helpful.

Looked at schematic to see which parts became active when the power button was pushed. From there used meter to determine diode was open and capacitor was shorted. Biggest trouble was dis-assembly/assembly required to get to electrical parts.

First, potatoe burned up in microwave. Microwave
was dead. Took off cover and found maintaince repair pamphlet in envelope. Schematic showed one shot thermostat for fire. Ordered thermostat from you and installed it. Works fine.

The replacement of the light no problem, the reason the light broke; problem. The original was glued in (for transport i think) and simply trying to unscrew it out (in a very tight slot) it broke; be careful or you’ll be buying a new $20 bulb (with shipping and handling).

Un screwed the cover but when i tried to remove the bulb it was broken at the base. I disconnected the power and used neddle nosed pliers to remove the base

remove the housing,replaced the magnetron and reassembled.no problems at all

Removed broken bottom tray no tools needed slid new tray in, rather a tight fit because of the gaskets around the edges. The door now must be more firmly closed. Works fine. . Wife happy. . . . . . .

Remove top air grate via 2-screws. Remove metal top panel behind grate that's above bulb via 1-screw. Bulb is exposed and can be un-screwed. DONE