Need to replace a garage roller door motor

I've got an garage door with a broken motor. I'd like to get only the motor replaced. Please see attached photo's.

AUSTRALIANA GARAGE DOORS PTY LTD

Tilt-a-matic Electronic Door Operator broken - needs repair or replacement
Tilt-a-matic Electronic Door Operator broken for automatic garage door -...

Replace Garage door B&D motor
Titling garage door B&D motor need replacement. All other part of the garage...

INSTALL REMOTE CONTROL GARAGE DOOR
INSTALL REMOTE CONTROL GARAGE DOOR

Supply and fit a 3.0(W) x 2.5 (H) free standing roller door
supply and fit a 3.0(W) x 2.5 (H) free standing roller door in melbourne...