BaByliss Type T100a Ref: 7475U hair clippers.
Suddenly made a loud buzzing while cutting and doesn't cut the hair very well, tugs a bit. Removed the two screws and removed the cutting head, cleaned, oiled and put back together, no difference, veer loud buzzing and whole unit vibrating.
Any suggestions please?
Is there a diagram to make sure I've put it back together right?

Michael Dearden, July 2021

There's probably an adjusting screw for the vibration motor. Check the manual. It's often accessible from outside the device.

Ddudjejsh, July 2021