You are all very helpful and I thank you
The problem was some broken wires (2,3,4 ) out of 6 but the outer core wasn't obviously damaged until I stretched it slightly. The circuit diagram, and discovering the HC is just a bunch of switches, helped a lot.
Anyway Mike at Bintel fixed it in about 35 seconds. Free (well I did buy some more gear whle I was I the shop). Particular thanks Mike!!
Merry Christmas to all!
All works finr
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