Electric Motor Doesn't Spin but HUMS/Buzzes compressors etc

Short and straight to the point. That is what most viewers are looking for. Too many have to give you their life history, like anyone really cares. Thumbs Up!

I'm an electrician, your description of how a centrifugal switch operates is text book, very well done on a clear simple explanation that totally non electrical folk should be able to understand. You also show how easy it is to save machinery from the scrapper with just 30 minutes of time and a bit of DIY. My only suggestion would be to include the unplugged mains lead in camera shot so people can see clearly the machine is disconnected and safe, I have found over the years a couple of mis wired house sockets where the return wire is switched leaving the machine 'hot' even when turned off. Cheers Ray

You bid for me up and running again with the house projects after an old table saw I just bought just hummed when started, even after firing up the first time. Cheap and easy fix for a guy that's never opened up an electric motor. Piece of cake. Thank you!

Very nice. Got the original motor or my Atlas Bandsaw, (Model 912, about 65 years old), and it's doing exactly what you're describing. YouTube is the place you go when you didn't listen to your dad enough!

Guy sold me a really nice drill press that had this problem for only $90. Now I can fix it where I don't have to very dangerously start it by hand, meaning it is worth about $300. Thank you for creating real value in the world.

God bless you for taking the trouble to share this. You just saved me $150 - $200 for a 3HP single phase 250V motor. My problem motor is over 30 years old, but WTH, it was still working and now lives again thanks to you!

"update " after watching your video again..I took it back apart,found that my wire going to my circuit breaker was rubbing on my motor finns,causing a short..in my hurry to put it back together,in didn't pay attention to the wires,in tie rapped them to the housing vents...THANK YOU FOR YOUR VIDEO SAVED ME 500.00 BUCKS!!!!

Just dropped by to say thank you for the insightful video. Exact same problem on my 2hp motor, same fix, fired right up after countless times humming. My only issue was getting the cover off, set of pliers, a firm grip, ever being so careful and it came off. Life safer!

THANK YOU!!! Was able to fix my Shopsmith motor two weeks before Christmas in the middle of making presents. You saved Christmas and me $200-$400 buying a replacement.

Professor on the compressor. You know Quincy, Illinois is the compressor capital of the world, right? All the major players hail from there. Employees leave...start their own biz across the street etc lol kinda like Solingen, Germany was the blade capital back in the day. The take away is u 🎸 and so does Quincy and everyone else who never ceases to hone and share their craft. It's becoming rare to see. I got Much 💘 and appreciation for that

These days I usually just take a picture of my electrical connections before I disconnect them, but sometimes I still write them down. Thanks for your time and effort you put it to make this video.

Your skills are impressive Moe. Thanks for the "how to" video.

I've been fighting this very same problem for more than 5 years. Thank you for this video! I cleaned the contacts just like you said ,it cranks everytime now ! Before , it would only start half the time and got worse during cold weather. Thanks again

Another inexpensive fix in today's throw away society. Enjoyed the video

This was the perfect fix. I bought my Sandborn air compressor and motor 35 years ago. I was having 'hard start' problems, motor humming, buzzing on startup only. I was considering a new $150 replacement motor, but thanks to this video I fixed the problem in 15 minutes with a little piece of sandpaper. My compressor now starts up like it was new again!

You are my hero!!! I’m not very electrically inclined, but you totally talked me thru getting my tablesaw motor up and running again. Thank you!!! 🙏🏼👍‼️

This worked for me. My motor is running again just fine. Thank you for posting this video. It saved me from buying a new motor unnecessarily

Thank you so much for the video! We’ve had an old air compressor in the barn that hasn’t been used in many years - because the motor “buzzes” but won’t turn over. I watched your video, went to the barn and pulled the end cap off the old motor. I cleaned the points - making sure they made proper contact with the motor off - and checked that the points fully disengaged by pushing the clutch in. I reassembled it and - Yahtzee! - it works! Thanks for the direction and motivation to make it happen!

Old motor started buzzing and rotating very slowly in reverse direction. I found and watched your video and followed the steps you've so clearly described. The winding contacts were a bit of a devil to get to, to clean but after blowing all the dust out and reassembling.......BINGO it starts and runs perfectly. Thanks for the really informative video. Cheers from a very happy new subscriber, Andy.

thank you sir . I haven't been able to use my craftsman compressor for approx. 6-7  years. was getting ready to junk however decided to keep it as it's a 4HP . I did this repair as you described here and it ran like brand new. Again thank you and God bless you