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ES120 Motor Issue
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Please be positive and constructive with your questions and comments.

ES120 Motor Issue

by blablabliam on Wed May 25, 2022 3:02 am

Howdy,

I have an ES120 screwdriver I purchased a while back, and I love it. However, it has recently started having an issue that leads me to suspect a worn out motor.

Problem:
After turning about 1 rotation, the screwdriver will immediately halt. The screen shows the screw stop turning at the same time, indicating that the firmware is aware of the stop. When the motor is disconnected, the electronics do not stop, and continue to provide ~5V as long as the button is held and the driver is twisted. All contacts are clean, suggesting that there isn't an issue in providing power to the motor. Likewise, the battery and electronics are all in good condition.

If anyone can help me get my hands on a replacement motor, or point me to where I can order a new motor, or sell me their broken screwdriver for parts, it would be greatly appreciated. Thanks!

blablabliam
 
Posts: 5
Joined: Wed May 25, 2022 2:54 am

Re: ES120 Motor Issue

by tepalia02 on Wed May 25, 2022 7:03 am


tepalia02
 
Posts: 102
Joined: Sun Apr 24, 2022 6:53 am

Re: ES120 Motor Issue

by blablabliam on Wed May 25, 2022 12:22 pm

The motor is too big to be a vibration motor. Want me to post the motor dimensions?

blablabliam
 
Posts: 5
Joined: Wed May 25, 2022 2:54 am

Re: ES120 Motor Issue

by blablabliam on Thu May 26, 2022 4:10 pm

Well, Miniware responded to me saying essentially 'buy the ES121'. I asked if they could tell me where the motor came from, and they said it was a custom built motor. Essentially, there is no replacement motor. This is painful; I really liked the driver, and the other parts are still in great condition.

blablabliam
 
Posts: 5
Joined: Wed May 25, 2022 2:54 am

Re: ES120 Motor Issue

by blablabliam on Thu May 26, 2022 4:27 pm

I *might* have found an acceptable replacement motor for the driver. https://www.digikey.com/en/products/det ... 1G/2417078

This meets the dimension and voltage requirements, at least.

I will order it, and report back if it works.

blablabliam
 
Posts: 5
Joined: Wed May 25, 2022 2:54 am

Re: ES120 Motor Issue

by blablabliam on Tue May 31, 2022 4:28 pm

IT WORKS! MY SCREWDRIVER IS BACK TO LIFE!

I was able to remove the pinion gear and wire harness from the original motor and install them on the new motor. For the gear, I had to heat the gear to >260 C using a soldering iron. I suspect loctite was used in the original gear. The motor is wound reverse to the original, so you need to flip the red and black wires when replacing the motor with this substitute part.

The resulting screwdriver seems a little slower, but the torque seems a bit higher. I prefer this tradeoff.

blablabliam
 
Posts: 5
Joined: Wed May 25, 2022 2:54 am

Please be positive and constructive with your questions and comments.