Help on Fixing Smart Motor

Now we have 5 broken Smart motors. They seem so fragile.

The latest one is brand new 22325AG. Its light is on and makes some sound like si…, but it does not spin. If I plug in a shaft, it is kind of hard to turn the shaft manually. However, if I remove the cartridge, it is pretty easy to spin the white plastic thing with fingers.

Does anyone have some idea how to fix it?

Thanks!

Try a different cartridge. If that works… can can CAREFULLY take cartridge apart and look for what’s jamming the gears.

It is not a problem with the cartridge. It does not spin even without a cartridge. There does not seem to be any jamming, either, as I can spin it with fingers.

Sounds like the driver may have been damaged.
As it’s new, just call vex support and get it changed under warranty.

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Thanks for the suggestion. We will try.

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It is funny. Out of curiosity I opened the Smart Motor and now suddenly it works again. Not sure what I touched, and not sure when it will break again.

I would carefully inspect the white gears inside… see if there’s a stripped tooth.

That is a good point. Thanks

I also opened another broken motor, which seems jammed. After loosing it a little, it starts to spin again.