OK Craig – I checked the slider switches, and cleaned them with Isopropanol.
Then I decided to remove the PCB, and de-soldered all the wiring.
After proving that all was good, I replaced the PCB and soldered the wiring back on to it.
I’m beginning to think the problem might be Board number 1 (8009012) as this is where (according to the Service Manual), the motor supply is switched between forward/reverse.
I am using Diagram 2, on page 3-2.
Graham
