Hi Bill

Took the Autostar HC apart - cleaned the carbon pads with alcohol and the pcb. No sign of anything untoward there.

Re-fitted the HC back together again. It's not the buttons (and therefore not the Autostar HC) because the left button works when going through the setup menu (eg set date).

Definitely think that it is something in the ETX base - either a motor or a connection. I presume that the azimuth drive only has one motor which runs forwards and backwards for clockwise/anticlockwise (whichever way round it is).

How easy is it to dissassemble the base of the ETX to check out if there has been a fault like a loose wire?

Regards

Art