How JustAnswer Works:

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

Ask Brian Your Own Question

Brian
Brian, Architect
Category: Home Improvement
Satisfied Customers: 3022
Experience:  Licensed Architect- 17 years, L.E.E.D. AP
6457309
Type Your Home Improvement Question Here...
Brian is online now
A new question is answered every 9 seconds

I have a Craftsman garage Door Opener (model 139.53637SRT)...

Resolved Question:

I have a Craftsman garage Door Opener (model 139.53637SRT)... 1/2 HP.. 120V... 5.0 AMP... 60 Hz...

Was working fine until about 3 hours ago when it stopped working... tried to open it and the door came up about 6 inches then stopped... when I tried to close it to try to reopen, the motor hummed for about 3 seconds, stopped, then hummed another few seconds, but the door did not move... I tried a couple more times with the same result... I checked the springs, pulleys, safety cable, rollers, trolley, etc.... everything is free and clear... I disconnected the door from the trolloey and it works fine manually... I tried the opener again to see if it would work without the door (just the chain & trolley)... still hum-stop-hum ... then I disconnected the chain altogether to see if the sprocket on the unit would turn... it did not turn and the unit again just hummed-stopped-hummed again... as a last resort, I tried adjusting both the force and travel distance up and down but that did nothing..

Any thoughts?
Submitted: 1 year ago.
Category: Home Improvement
Expert:  Brian replied 1 year ago.

Hi, my name is XXXXX XXXXX I will be helping you today.

Thanks for the thorough explanation of your symptoms. With everything you have done the humming is most likely being caused by stripped or binding gears inside the motor unit or you need a new start capacitor.

I would unplug the unit, take the cover off and inspect inside. See if the gears are in good shape and hopefully not plastic shavings everywhere. Inspect the capacitor; it is a cylinder shape and if it is bad, you will often see the sides bulging or it could be leaking fluid.


If you are satisfied with this answer please leave me a positive rating at your convenience.

Customer: replied 1 year ago.

There are plastic shavings and the large gear wheel is worn some... but it still seems to have sufficient teeth to mesh with the main turning gear...


Do you think I could find replacement gears for this unit (manufacture date of 1995)???.. and would replacing gears (if available) be cheaper than a new unit???..


 


 


The capacitor looks fine... clean... no bulge... nothing leaking...

Expert:  Brian replied 1 year ago.
Well it sounds like the gears are the problem. You can purchase a new one online at any garage door parts website. Just have your make and model number of the unit. It will be cheaper to buy new gears than a new unit.
Brian, Architect
Category: Home Improvement
Satisfied Customers: 3022
Experience: Licensed Architect- 17 years, L.E.E.D. AP
Brian and 5 other Home Improvement Specialists are ready to help you

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:

 
 
 
  • 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. Jimmy Bagley, IA
< Last | Next >
  • 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. Jimmy Bagley, IA
  • 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. Jean Riverhead, NY
  • 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!!!! Alex Los 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. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, 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. Esther Woodstock, NY
 
 
 

Meet The Experts:

 
 
 
  • The Home Smithy

    Home Builder

    Satisfied Customers:

    2002
    #1 Home Improvement Expert 30+ years experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/TH/TheHomeSmithy/2011-8-13_11146_homesmithy.500x500.64x64.jpg The Home Smithy's Avatar

    The Home Smithy

    Home Builder

    Satisfied Customers:

    2002
    #1 Home Improvement Expert 30+ years experience
  • http://ww2.justanswer.com/uploads/BS/bshull17/2011-2-11_04125_japic.64x64.JPG Brian's Avatar

    Brian

    Architect

    Satisfied Customers:

    1967
    Licensed Architect- 16 years, L.E.E.D. AP
  • http://ww2.justanswer.com/uploads/ST/Steve555/2013-6-14_144343_Depositphotos4247517S.64x64.jpg Steve G.'s Avatar

    Steve G.

    Handyman

    Satisfied Customers:

    135
    VP of electronic repair company and home theater advisor.
  • http://ww2.justanswer.com/uploads/ER/Erdaram/2011-6-21_14724_ANIEric4Pics.64x64.gif Eric M. Bright's Avatar

    Eric M. Bright

    We Don't Comprehend the Word Can't!

    Satisfied Customers:

    1734
    I've been been doing things for my clients that others have said cant be done for over a 1/4 Century
  • http://ww2.justanswer.com/uploads/rich03dungo/2010-3-17_101556_tshirt2.jpg Rich's Avatar

    Rich

    Home Improvement Enthusiast

    Satisfied Customers:

    674
    Over 35 years construction and home maintenance experience
  • http://ww2.justanswer.com/uploads/AL/alumalite/2012-5-10_234018_shutterstock506249951forJA500.64x64.jpg Phil's Avatar

    Phil

    Mechanical Engineer

    Satisfied Customers:

    409
    Retired contractor, 51 years experience
  • http://ww2.justanswer.com/uploads/JE/jerrymassie/2011-1-15_45937_1111055.64x64.JPG Jerry's Avatar

    Jerry

    hearth products

    Satisfied Customers:

    317
    owned and operated stove retail and service 12 yrs