Hi Brett
Time to grab the a multimeter. I think you need to start from the start as it were. Unplug J3 on the A2 bridge rectifier. Then try checking test point 3 (TP3) on the A2 rectifier board. Best to check to the +5 REG return which is pin 17 of J3 which you have unplugged. You should get around 12VDC by the schematic. Once confirmed plug J3 back in and move to the driver board. Test from TP 5 to an earth which you find on the board as you may have a bad earth. You should also get around 12VDC. Let us know how you go. This will check if the unregulated voltage is reaching the 5 volt regulator.
