GE Profile XL1800 venting fan humming noise - Appliance Repair Forum

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Model: JVM1870SF001	Brand: GE	Age: 5 - 10 years
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MrJ		#1 Posted : Wednesday, October 24, 2012 3:14:04 PM(UTC)
Rank: Member Groups: Registered Joined: 10/24/2012(UTC) Posts: 3		Hi,I have a GE profile spacemaker XL1800 (approx 7yrs old)...it all of a sudden started making a humming noise from the venting fan...it turns on but it seems not to be spinning full speed as b4. Everything else works fine. I tested both the HV cap and the motor cap and they checked out OK. I also tested the HV diode and I am getting a high resistance (8k ohms). Could it be a bad diode that is causing this? Many thanks in advance,


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Gene		#2 Posted : Thursday, October 25, 2012 3:06:38 PM(UTC)
Rank: Advanced Member Groups: Senior Expert, Administrators Joined: 7/19/2007(UTC) Posts: 27,455 Was thanked: 4 time(s) in 4 post(s)		Which fan did you mean: the cooling fan (#78 at the diagram) or the exhaust fan (#95 at the diagram)? Gene. BTW, no one of them is connected in any way to any high voltage part of the microwave.


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MrJ		#3 Posted : Friday, October 26, 2012 11:48:55 AM(UTC)
Rank: Member Groups: Registered Joined: 10/24/2012(UTC) Posts: 3		Gene, I'm referring to #95. thank you


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Gene		#4 Posted : Friday, October 26, 2012 3:26:22 PM(UTC)
Rank: Advanced Member Groups: Senior Expert, Administrators Joined: 7/19/2007(UTC) Posts: 27,455 Was thanked: 4 time(s) in 4 post(s)		Very likely the problem is a bad motor itself. - The exhaust fan assembly Part number: WB26X10104 Gene.


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MrJ		#5 Posted : Saturday, October 27, 2012 3:23:48 PM(UTC)
Rank: Member Groups: Registered Joined: 10/24/2012(UTC) Posts: 3		Originally Posted by: Gene Very likely the problem is a bad motor itself. - The exhaust fan assembly Part number: WB26X10104 Gene. is there any quick test I can make to determine if that is it?


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Gene		#6 Posted : Monday, October 29, 2012 4:00:31 PM(UTC)
Rank: Advanced Member Groups: Senior Expert, Administrators Joined: 7/19/2007(UTC) Posts: 27,455 Was thanked: 4 time(s) in 4 post(s)		Originally Posted by: MrJ is there any quick test I can make to determine if that is it? You can check it for continuity. Also if you would order the part from APP and it would not fix the problem, you can easy return it. Gene.


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