1997 Jenn-Air M170W. The timer works, but no heat, fan or turntable. Sudden failure.
From reading forums it looks like a door switch is probably at fault. There are three switches, so probably makes sense to replace them all. Any other parts that are likely to be needed? It’s a built-in so worth spending some time to try and fix.
Also - any instructions available for how to get to the switches? The regular manual doesn’t go into that level of detail.
Thanks in advance!
[quote=Whee;633807]1997 Jenn-Air M170W. The timer works, but no heat, fan or turntable. Sudden failure.
From reading forums it looks like a door switch is probably at fault. There are three switches, so probably makes sense to replace them all. Any other parts that are likely to be needed? It’s a built-in so worth spending some time to try and fix.
Also - any instructions available for how to get to the switches? The regular manual doesn’t go into that level of detail.
Thanks in advance![/quote]
Whee,
First things first, you will need to remove the microwave from the cabinet or wall oven . All acces to the internal components are performed from the inside of the unit, and you will need to remove the outer cabinet.
Once you have the unit unplugged and out on a workbench :
A) Remove the four screws from the rear section and push the cabinet backwards.
To remove the control panel assembly:
A) Disconnect two connectors and terminals on the printed circuit board assembly. Remove screw while holding the grounding ring terminal of main harness, whichsecures the front plate.
B) Remove three screws holding control panel assembly to the oven front. At the same time, draw forward the control panel assembly fom oven front.
C) Remove the push lever.
D) Remove three screws from the control.
E) Remove push button and button spring from control panel.
F) Reverse the above steps for reassembly.
You can now access and remove the door switch mounting bracket screws, remove the two screws and slide the assembly back, then out, and replace the door switches.
The door switches are a good place to start, but you may also need the printed circuit board,
Which has been discontinued by the manufacturer, and we are unaware of any other parts source.
Thanks and Good Luck,
Thanks for the very useful help. Much appreciated.
The problem was in the switch labeled 16 in this diagram. Replacement parts for JENN-AIR M170W MWAVE- MOUNTED OVER RANGE/WO | AppliancePartsPros.com
The contacts were clearly blackened. While I purchased all 3 switches, I ended up just replacing that one since they were a pain to get out.
Microwave is working fine now.
Thanks again!
[quote=Whee;640829]Thanks for the very useful help. Much appreciated.
The problem was in the switch labeled 16 in this diagram. Replacement parts for JENN-AIR M170W MWAVE- MOUNTED OVER RANGE/WO | AppliancePartsPros.com
The contacts were clearly blackened. While I purchased all 3 switches, I ended up just replacing that one since they were a pain to get out.
Microwave is working fine now.
Thanks again![/quote]
Whee,
Great,
Glad you’re up and running, and you were able to get by with the door switches.
Good Luck and Thanks,
[quote=MicrowaveDisplaydotcom;641314]This seems like an older model and it may have just been normal aging, but I always advise folks not to open the door while it’s cooking, but to hit the “Stop” pad first.
The switches will of course stop it, but they’re not designed for the heavy spark caused by inductive kickback when the load is interrupted that way.
They’re instead meant as safety interlocks to prevent the oven from cooking while the door is open.
Also, slamming the door can cause the switch mounts to be misaligned or damaged.
Good cooking to you![/quote]
Correct on all counts,
It is an older microwave(early to middle 90’s) and usually part of a combination wall oven/microwave.
Slamming the door is not good for any appliance, and is the first thing to check, whenever there is a start or run issue.
The door switch circuits are a bit more tolerant than you imply, but pausing or stopping the control is something that needs to be considderred, to help resolve an ongoing issue.
Good Luck,
[quote=MicrowaveDisplaydotcom;641357]They’ll put up with the arcing for a while, but it greatly shortens their lives.
I did not mean to imply that they’re as sensitive as it may have come across.[/quote]
We’re on the same page, that’s the important thing. We’re here to help our customers, and each other when we can.
Later,
Be advised, the website this guys i promoting states that they will contact you with progress about the repair progress of your microwave display and that it should be shipped within a couple of weeks. That’s a bald face lie. This guys cashes your check and then never gets back to you. Don’t use his repair service.