Motor suddenly not working

Hello, my raising motor (motor to lift an arm) suddenly lost strength. Yesterday it could lift three balls in its cage, all of the sudden today, it couldn’t. Do any of you guys have any idea why this might happen?

What changed from three days ago until now?

it might be that some part of your robot has structurally deteriorated.

or that something happened to burn out your motor today that didn’t yesterday.

pictures of your arm would help.

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