when i turn on the dryer the motor does a humming noise but when i move the drum slightly the motor starts and it starts turning the drum

Archie Pollock, September 2017

iwould hazard aguess the motor capacitor has failed.

http://www.espares.co.uk/product/es185677/capacitor---motor?pageNumber=1&PartTypeId=1910&ModelId=631762

Check this is right for your particular machine.

It wil lbe underneath near the motor.

unplug the machine, locate the capacitor.
Pull off the terminations, noting which ones go on separate terminals
Unbolt the capacitor
Bolt in new one
Reconnect terminations
Test
Curse because you forgot to plug in and turn on
Try again.
Reconnect wires

dsaflikjfea, September 2017