I have a 3/4 HP motor installed on my porch chairlift that has stopped working. The motor only hums when you push the up or down button. After removing the motor it spins freely and will run but has no balls at all. It's not running to full speed and I can stop it with my hand. Do you think the problem is with the run capacitor?Paul M.

dryer won start YouTube

Motor has overheated; the motor unit does not operate or trolleyis stuck on stop bolt = Motor unit hums briefly; RPM Sensor =Short travel 6-8" (15-20 cm).• Unplug unit to reset. Try to operate motor unit, check diagnostic code.• If it is still flashing 5 times and motor unit moves 6-8" (15-20 cm), replace RPMsensor.• If motor unit doesn't operate, motor unit is overheated. Wait 30 minutes andretry. If motor unit still will not operate replace logic board.

If blades rotate freely, then there is no stoppage.
If motor hums, then circuit and switch are good.
If motor will not start, and reset is not tripped, then disposal has gone bad.

Motors slow down and overheat, and then they stop working.
Each time you hear motor humming instead of rotating, the motor is overheating.
All motors stop working some time.

There are no repair parts for disposals.
Drain is not clogged, so sink is usable until disposal is replaced.

I wrote EZ disposal-replacement steps from years when I worked apartment maintenance.
http://www.fixya.com/support/r7929008-replace_garbage_disposal

Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on disposal or any do-it-yourself project.
Fixya is always less expensive than a service call.

If the motor continues to hum afteer letting go of the button, then it is likely a broken drum belt. If the motor hums but stops when you let go of the button, something is preventing it from turning. This could be a seized motor or a drum that is stuck, or something caught in the fan blade.

On the inside of the motor box, check to make sure the chain has not come off the gear.

you have a bad motor,that's what is humming,it's heating up and cutting out,when it cools down it will start again but soon that will stop also

Hi,If you hear the hum while you are pushing the start button and when you let off the button the hum stops, you have a notor going bad.
If you can get someone to help you, open the door, hold the door switch in, while someone else holds the start button, you try and turn the drum with your other hand. Sometimes the motor will start but, this only confirms the motor is bad and needs replaced. I hope this helps.

Thanks
Vic

Hi, If you release the start button, does the hum stop? It sounds like hte start winding in the motor is bad. You can try and start it manualy by truning the timer on, open the door so that you can turn the drum with your hand. You will need anoth person there so that one of you can hold the door switch button in and the other push the start button. While pushing the start button, try turning the tub and see if it starts. This will give you an idea on the motor bad or not.
I hope this helps. Please let me know if you need any more assistance.

Thanks
Vic

Sounds like the motor is cutting out on its thermal fuse. The only cure is to change the motor.

It sounds like it is the motor or a stuck/obstructed blower wheel. You can start by opening the door, push the door switch in, hit the start button & see if you can turn the drum clockwise by hand. This might get it going. if the drum does not move by hand then the problem is probably within the blower. post your findings for a follow up