Chosen Solution
Battery is fine. Have cleaned the whole brush and casing. When the button is pressed, the motor starts but this does not result in the spindle that operates the brush moving. Cannot see any obvious breaks. How do I check the connection of the spindle to the motor? Thanks M
Hi, Can you gently turn the spindle by hand to see if it moves or even if it starts to turn by itself (if the power is switched on) once you try to turn it? You don’t say the model number of the toothbrush but looking at the image at Step.12 in the ifixit Oral-B Black 7000 Motor Replacement guide, the spindle appears to be the rotor part of the motor itself, so it may be the same in your model. If it is humming but not turning it may be that there is not enough power to initially start the motor rotating or the spindle is jammed somehow.
