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
-------------------- If I like it, the wife says that we can't afford it!
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Meade ETX105 & Celestron NexStar 6SE with Bob's Knobs
6-26mm EPs + Hyperion 8-24mm
MRF and Antares 8x50 RACI finder scope
Canon EOS 400D DSLR (un-modded) and SPC900 webcam. Finally climbing the AP Learning Curve!