Tumble dryer motor lost starting torque what are the most likely reasons?

Question

278volts across condenser drum will revolve if given gentle push otherwise it sits buzzing at me

Answer 1

could be one of three, Condenser failed starting winding failed or the electronic switch that activates the starting winding is open circuited

Answer 2

If you mean the motor is running but the barrel isn't moving, here are my top 2 guesses.:

1 - the drive belt slipped out of place or is broken.

2 - the "drive belt tensioner" broke and needs to be replaced.  This is a springy thing that holds the drive belt wheels against the drum.

It's not hard to replace either one of them.