Check fuses

Open the left hand door and you will see two screws holding the right hand door closed. Unscrew these and open the right hand door.

Unscrew the PCB cover and expose the 2 glass fuses housed on the bottom of the pcb board.

Check the fuses to see if they have blown. If they have replace with 630ma quick blow class fuses which can be found at any Electrical Wholesaler.

Did this solve the problem?