[3pinplug]

Hi Peter , Paula

Here are the results of the tests, I was keen to see what they showed:-

Disconnecting pin 15 removed pulses from pin 18.

At rest ie not moving spinwheel I positioned trace in centre of screen on oscilloscope, moving spinwheel anticlockwise - no movement! trace stayed in same position as at rest.

Turning spinwheel clockwise trace jumps upwards on screen.

I attach two pics - one at rest / moving spin wheel anticlockwise.
One showing movement of trace upwards when rotating spinwheel clockwise.

From your instructions, does this now indicate I have a fault with the up / down section on the logic board?

I tested the spin wheel with Pin 15 still disconnected as you didn't say to reconnect it for the second test, hope that was correct?

Regards

Mark