As my name suggests, I have a Williams Black Knight machine - had it for nearly 30 years now - longer than my Wife...😉
Unit is an early build - with the transformer in the head unit and the older power supply, will go into more detail elsewhere as I'm on the hunt for info - I've had a great run out of this machine over the years with only switches, solenoids and dry joins/loose connections stopping it in the past, but it has another issue now I can't sort out.
Will have a good look around and do some searching to see if I can find the answer before I start a thread on this, so will see what I find.
Thanks in advance for any assistance I may recieve. 👍😊