What's wrong with the rotary roller
It shouldn't be the sound of the motor turning. That's an electric motor with an oversize load that's buzzing; And then the protective device of the motor starts to move, which is what we call the tripping. If you don't jump, the motor will keep turning. That is, the motor is idle; That's the pulley or gear that's connected to the motor and it's not working; That's it. There are only two cases.
The machine burns a set of lines, which may be the starting line. 2, the motor card is dead, try to turn by hand. Check the capacitance or change it. The main board is broken, and it cannot detect the starting signal.
It's possible that the roller card is dead You turn the drum manually and look at the ready
