Appliance

Need appliance repair help? Ask a technician for answers ASAP

Ask an Expert,
Get an Answer ASAP!

My Jenn-Air expressions microwave stopped working. The turn…

Customer Question
My Jenn-Air expressions microwave stopped...
My Jenn-Air expressions microwave stopped working. The turn tray turns. Timer works. Microwave does not heat food. Attached are two pictures of th unit which part of the Jenn-Air oven and microwave combination.
Submitted: 4 months ago.Category: Appliance
Show More
Show Less
Ask Your Own Appliance Question
Answered in 31 minutes by:
12/4/2017
Appliance Technician: Webb-Guy, Handyman replied 4 months ago
Webb-Guy
Webb-Guy, Handyman
Category: Appliance
Satisfied Customers: 2,901
Experience: Maitenance Supervisor
Verified

Hello, and welcome to JustAnswer. My name is ***** ***** I will be the one to assist you. Sorry to hear that you are having this trouble. Have you tried doing a hard reset by unplugging the unit for 5 minutes to do a hard reset?

Ask Your Own Appliance Question
Appliance Technician: Webb-Guy, Handyman replied 4 months ago

ok do you happen to have a multimeter that you can test some parts with? now dealing with a microwave can be dangerous. have you ever worked with one before?

Ask Your Own Appliance Question
Customer reply replied 4 months ago
I have not work on microwave. I do have voltohm meter. Perhaps if you can give me so direction I can let you know if I can do what you suggest with the meter I have.
Appliance Technician: Webb-Guy, Handyman replied 4 months ago

ok so what I need from you is your model number. this will be on the inside of the door area. That way I can tell you the parts to test along with how to test them.

Ask Your Own Appliance Question
Customer reply replied 4 months ago
I did not see in side the door area information which says model number. I took pictures of all nameplates I found in the door area and I am attaching them elbow. This jenn-air microwave is part of the jenn air expression combination with 30" oven and microwave. Hope this helps. If not I can find out more tomorrow and get back to you tomorrow. Thanks
Appliance Technician: Webb-Guy, Handyman replied 4 months ago

ok I am not seeing your model number on these plates so I will open this up to other experts who may be able to better assist you.

Ask Your Own Appliance Question
Customer reply replied 4 months ago
I will also call someone tomorrow who may know about the model number of this unit. Thanks
Customer reply replied 4 months ago
I have opened the back of the microwave attached is the picture of the magnetron with part number and capacitor. I recall you mentioned about danger of high voltage. Please let me know what is the easiest way to discharge the capacitor. Also how can I check if it is the magnetron and not capacitor that has gone bad?
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago
Master Tech
Master Tech, Whirlpool Master Technician
Category: Appliance
Satisfied Customers: 12,347
Experience: 30 years Appliance Field 15 yr with Whirlpool Corp. 9 yrs Whirlpool Technical Assistance Line
Verified

I see the last person has opted out of your question!
My name is Woody.
I will be glad to assist you today.
I have been servicing ALL Major Brands of Appliances for 37 Years, I own my own Appliance repair Company

I will do my best to take the information that you provide to me and make a Diagnosis for you to be able to repair your own Appliance.

The model number of your unit is M170W!

Do you have a Volt-Ohm meter and know how to use it? to be able to do any component or voltage testing

You can test the magnetron with a volt -ohm meter testing the mag tube for resistance.

and to properly discharge the capacitor , you need to short one of the terminals to chassis ground .

If you have any questions just let me know.

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Thank you Woody. I just saw your text and was relieved to hear that you will be helping me. I am at work right now and will be at home around 6:00pm today. Are you going to be available then? In the mean time I wanted to let you know that I discharged the capacitor last night and then removed the diode to check if it is still good. Diode checked out fine. I will need to take the magnetron out and then do the testing as you will direct me. Please let me know if this evening will work for you. Thanks
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

No you do NOT have to remove the magnetron to test it just remove the two orange terminals and ohm the winding out you can do that right from the last picture that you sent on the 5th.

All your looking for is continuity between the two leads and no continuity between the two leads and chassis ground.

Ask Your Own Appliance Question
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

And sorry I missed you I got off line yesterday about 2:40 I had a 3 o`clock DR. appointment

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Thank you Woody I will check as you suggested when I get home this evening. What kind of resistance value should I be looking for? Between the two terminals on the magnetron and each terminal to chassis ground? I am assuming you want me to disconnect external wires to the magnetron before I take resistance reading right? Or leave them on if the external circuit is open?
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

Yes remove the wire leads from the magnetron for testing.

And all your looking for is continuity between the two terminals no specific reading just continuity, and NO continuity to chassis ground .

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Got it. Thank you. So if there is any high resistance (>0) between two terminals and low resistance terminal to ground (short to ground) that would be considered as defective magnetron right?
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

any resistance between the two terminals mean the mag has good windings,, but if you have resistance between either mag terminal and chassis ground then it is bad.

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Thank you Woody for clarification. Especially between the two terminals as long as it is not infinity or open circuit. I was thinking acceptance criteria to be if very low resistance.
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

Correct no resistance between the two mag terminals is bad!!

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Thank you Woody. Have a good day. Will keep you informed of my findings.
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

No problem ,Be Safe!

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Sorry it has taken me long to check what you had recommended. I just checked and found between terminals is zero ohm (like it is shorted) terminal to Chas is ground is open. Is zero ohm expected or is there short inside the negnetrio?
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

no 0 is a good winding and 1 open to chassis is correct also .

So that is not the issue.

Have you tested to see if the control board is even sending voltage to the high voltage transformer on the primary transformer winding?

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Thank you. That is good feedback. I have not checked control board sending voltage to xfmr primary but the will do that shortly. What is the voltage level at the primary of the xfmr? Is the door switch permissive to voltage to capacito and then onto xfmr and should I check that also?
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

The voltage to the transformer is 120 volts A/C no the door swithes are all on the primary side of the heating circuit the Cap is on the

High voltage side of the system

Ask Your Own Appliance Question
Customer reply replied 4 months ago
In the picture attached, in the abscense of schematic diagram, I am assuming the two wires on the top are for the xfmr primary correct? If they are, then can I disconnect them and check 120vac at the wire terminal without connecting them to xfmr for testing?
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

in that wire diagram the top red wire is the hot leg to the transformer and the very bot***** ***** or two white wire are the neutral side of the transformer.

Ask Your Own Appliance Question
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

just in to the white plastic terminal cover is fine just make sure the test leads are touching metal on the terminals .

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Got it. I will disconnect the wires from xfmr and ensure test leads contact both female terminal pin inside the white plastic cover. Thank you.
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

That works!

Ask Your Own Appliance Question
Customer reply replied 4 months ago
No voltage at the two terminal pints going into xfmr!! I had the diode checked and diode is good. Does that leave capacitor or the door switch? I just energized the microwave for 10 seconds. Would it have charged the capacitor and I need to discharge it for high voltage charge? What the next component to check? Do you think it could the control board? What are the permissive to energize the xfmr?
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

let`s check the red wire to ground ,when the unit is running of course.

Ask Your Own Appliance Question
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

And you were testing for voltage to the transformer with the unit running correct?

Ask Your Own Appliance Question
Customer reply replied 4 months ago
the unit was running. Just checked red wire to ground with unit running. Same results. 1-2vac.
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

ok so you have the the relay #4 on the control board is not closing to give voltage to the Transformer.

And with the age of the unit that control board that the relay is on is no longer available from the manufacture.

I show the part number was 56001007

Ask Your Own Appliance Question
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

Here is what I find on the largest appliance parts dealers web site also .

https://www.repairclinic.com/PartDetail/Control-Board/56001007/651368

Ask Your Own Appliance Question
Customer reply replied 4 months ago
I just disconnected the relay and checked the contact was open and stayed open when ran the unit. One change was with the contact wiring disconnected from relay when the unit was ran, this time the lamp or the turn table remain off. That probable could indicate the contact configuration. Either that or the two wires I disconnected are the relay power leads. You may know more. It has to be the power leads to the relay. I just checked at the connecto of the relay. With the door closed had 15 volts I had selected AC but that could be DCV. Ran the unit -15volts. Open the door - 0 volt.
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

As to your last photo I`m just going off the photo of the wire diagram you sent m.s3.amazonaws.com/vkOlkOAE/image0.jpg

The forth photo you sent .

And if the cavity light and cooling fan are running when the unit is running that tells me that the other relay ( I can not tell if it is a # 6 or 8 it could possibly be a letter B also )

is closed and has voltage to it and thru the relay

If that relay has a black and a red wire on it you can jump the red to the black wire and see if the transformer is then getting voltage to it or not.

Ask Your Own Appliance Question
Customer reply replied 4 months ago
Ok I can try that but what if the 15 volt I read across the black and red wires are the power source to operate the relay coil? If that is the power source would that blow fuse somewhere on the board or heat-up/ damage component on card. Or you think the black and red wires going to the relay are the control circuit permissive wires to energize the xfmr? I did not understand the number 6 or 8 comment you made.
Customer reply replied 4 months ago
Are you reading 6 or 8 on the black relay or the board? Does the relay coil get power at the two terminals shown?
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

the relay coil terminals #1 and #2 are 120 volt relay coil Red #1 and white #2 .

The #6 or #8 I`m getting off the wire diagram !!that you sent!

Ask Your Own Appliance Question
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

on the relay the Black is power for the relay contact and the Red wire goes to the transformer hot leg

Ask Your Own Appliance Question
Customer reply replied 4 months ago
I had to step out for ten minutes or so but I will check when I get back and update you. Thank you
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

I blew up you photo of the wire diagram .

The transformer relay is A not 4 and the fan and light is B not #6 or #8

Ask Your Own Appliance Question
Customer reply replied 4 months ago
I am sorry but I was unable to spot the two relays you referenced on the schematic wiring diagram. In the mean time I looked at the two relays on the board (picture attached). There are actually two relays one large (picture I sent you) and one smaller located immediately below the large relay in below it. On the board these relays locations are identified as RY1 and RY2.
Customer reply replied 4 months ago
Are
you reading 6 or 8 on the black relay or the board? Does the relay coil get power at the two terminals shown?
Customer reply replied 4 months ago
I am not at house but will be there in an hour or so and will check. Actually there are only two wires coming out of thevrelay. The black and red. Contact must coming out of the board so the red and black must be power to coil. I will confirm either later tonight or first thing tomorrow. Thank you for your guidance.
Appliance Technician: Master Tech, Whirlpool Master Technician replied 4 months ago

I`m going to opt out .

And I think you should to , it seems as if your not able to read the wiring diagram and not knowing what your doing on a high voltage microwave will and can get you killed .

I recommend if your dead set on repairing this old unit , you need to call a professional toy have them work on it .

I hope you understand I`m in no way trying to be mean to you , I just do not want you to hurt yourself .

I know service techs that have had fingers blown off , and have heard of guys getting electrocuted , when working correctly this microwave will produce up to 5,000 volts .

So Please be safe and have Happy Holidays.

Ask Your Own Appliance Question
Customer reply replied 4 months ago
I understand your concern and appreciate very much being working as project manager in nuclear power plant. It is a good challenge and I am very careful and do not take any steps in unknown or uncertainties. Currently I got called on a plant issue so I had to put off following thru on your suggestions but I plan to get back on it sometime today and will update you as I do. Thank you again.
Was this answer helpful?
Ask Master Tech Your Own Question
Master Tech
Master Tech
Master Tech, Whirlpool Master Technician
Category: Appliance
Satisfied Customers: 12,347
12,347 Satisfied Customers
Experience: 30 years Appliance Field 15 yr with Whirlpool Corp. 9 yrs Whirlpool Technical Assistance Line

Master Tech is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Thank you for the expeditious answer. It's good to know you're out there and awake in the wee hours when I finally have time to ask questions about my Jenn Air.

JeanRiverhead, NY

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

< Previous | Next >

Meet the Experts:

John

John

Home Appliance Technician

13,453 satisfied customers

Appliance repair business owner for over 43 years.

Tom Goellner

Tom Goellner

Home Appliance Technician

1,591 satisfied customers

32 yrs. experience servicing major appliances and HVAC equipment.

Tyler Z.

Tyler Z.

Appliance Doc

86,056 satisfied customers

9+ years being an appliance technician with factory training.

Kelly

Kelly

Appliance Technician

19,605 satisfied customers

Highly accurate diagnostician with over 30 years experience!

The Home Smithy

The Home Smithy

Home Appliance Technician

6,148 satisfied customers

30 years repairing appliances

william

william

Home Appliance Technician

3,012 satisfied customers

Major Home Appliance Technician Specialist Whirpool Certificate

John

John

restaurant equipment technician

2,103 satisfied customers

25+ years experience. I'm now employed by a commercial cooking equipment service company

< Previous | Next >

Related Appliance Questions
My Whirlpool microwave is blowing fuses at an increasing
My Whirlpool microwave is blowing fuses at an increasing rate. … read more
Kelly
Kelly
Appliance Technician
High School or GED
19,605 satisfied customers
Microwave won't heat. Model JVM1460AA001, GE Spacemaker
Model JVM1460AA001, GE Spacemaker XL1400 manufacture 1998. … read more
kingcobra80
kingcobra80
Fitness Repair Expert
High School or GED
794 satisfied customers
GE Monogram gas stovetop igniter quit sparking. Upon
GE Monogram gas stovetop igniter quit sparking. Upon testing, the transformer had no output so I replaced it. After connecting the wiring harness the transformer started to get hot so I tested the swi… read more
Master Tech
Master Tech
Whirlpool Master Technician
12,347 satisfied customers
I have a GE Monagram Fridge (Circa 2003-2005) with an
I have a GE Monagram Fridge (Circa 2003-2005) with an overhead condensor, with lights that aren't working in the fridge. I've replaced the bulbs in the overhead fixtures, but no dice. … read more
Tom Goellner
Tom Goellner
Home Appliance Technician
Vocational, Technical or Trade Scho
1,591 satisfied customers
No display on a kitchenaid oven. KEBS207, about 7 years old.
I used the oven yesterday after which I started self cleaning, in the morning noticed the oven was blank, checked and a circuit breaker tripped, reset the breaker the oven lit for a second then went blank again, checked the circuit breaker again but it was not tripped.… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
When the microwave is turned on it sounds normal for a
Hi, When the microwave is turned on it sounds normal for a minute then the hum stops but the microwave still runs but doesn't heat. I found the High Volt Transformer fuse blown, any ideas? … read more
Ray
Ray
Appliance Repair Technician
High School or GED
248 satisfied customers
The lights in the fridge side of my monogram ZIS48onma is
the lights in the fridge side of my monogram ZIS48onma is not working, the freezer side does. Whatmay be wrong? … read more
Master Tech
Master Tech
Whirlpool Master Technician
12,347 satisfied customers
I have a GO Monogram ZDIS15 under counter icemaker. About
I have a GO Monogram ZDIS15 under counter icemaker. About less than a year ago, technician have replaced almost every major component including compressor, pump, auxiliary pump, condenser. Everything … read more
Appliance Tech Dave
Appliance Tech Dave
Vocational, Technical or Trade Scho
1,116 satisfied customers
I have a jenn air double oven model jjw3830ws. A transformer
I have a jenn air double oven model jjw3830ws. A transformer blew in our town causing the owner to go off and on several times. My oven will not function. When I turn the breaker back on all I get is … read more
Kelly
Kelly
Appliance Technician
High School or GED
19,605 satisfied customers
I have a Kitchenaid duel fuel that call for a ovenControl,
I have a Kitchenaid duel fuel that call for a oven(###) ###-####Control, Zodiac. My problem is that the three light bulbs in the oven are not working but the bulbs are good. I assume the problem is in… read more
Master Tech
Master Tech
Whirlpool Master Technician
12,347 satisfied customers
My kitchenaid convection oven model KEBK101BSS00 is
My kitchenaid convection oven model KEBK101BSS00 is completely dead . No display no controls no oven no light. It is getting power . When everything is dead what is the problem..Do I need to replace t… read more
Kelly
Kelly
Appliance Technician
High School or GED
19,605 satisfied customers
Last night we had a tree hit a transformer and there was a
Last night we had a tree hit a transformer and there was a power surge now the control panel on our maytag washer won't come back up. There is power to the outlet. … read more
Joel Swenson
Joel Swenson
High School or GED
3,697 satisfied customers
I'm looking for a transformer for my fryer. Model-12-6-G
I'm looking for a transformer for my fryer. Model-12-6-G Serial number E88KD01059 … read more
Kelly
Kelly
Appliance Technician
High School or GED
19,605 satisfied customers
I have a power transformer for a kegerator I need to replace
I have a power transformer for a kegerator I need to replace or componenets from it I need to replace but cant find it anywhere online to replace … read more
McgiverSR
McgiverSR
Technician
Vocational, Technical or Trade School
39 satisfied customers
The electric company replaced the transformer on the pole
The electric company replaced the transformer on the pole outside. When the electricity came back on I have the code F9E0 in the display. Won't let me reset the clock. Thanks, Pete … read more
Tyler Z.
Tyler Z.
Appliance Doc
Bachelor's Degree
86,056 satisfied customers
Coin washer MAH21. Electric company transformer failed
Coin washer MAH21 . Electric company transformer failed sending surge current. No lights on display. Where to look for damaged part.… read more
Master Tech
Master Tech
Whirlpool Master Technician
12,347 satisfied customers
Where can you get a transformer for a Panasonic Microwave
Where can you get a transformer for a Panasonic Microwave convection oven #NE -9870C ? … read more
John
John
restaurant equipment technician
Associate Degree
2,103 satisfied customers
How safe it is to use a 110 v to 220v transformer whith a
How safe it is to use a 110 v to 220v transformer whith a cloth washer and dryer machines .? Thanks. … read more
John
John
restaurant equipment technician
Associate Degree
2,103 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x