Rain Dial Repair and Exchange (dedicated to CP)
The leader in RD-600, RD-900, RD-1200 (including R series) repairs & reconditioned Irritrol / Hardie timers

How to remove the timer module
How to remove the terminal wiring board
  How to remove the 24VAC EXT transformer
How-to-Videos (YouTube): 
Repair, Ship, Troubleshoot & Program your Rain Dial Timer 
How to pack & mail your timer items
Examples of common controller failures
How to Program your Rain Dial Timer