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Ok, I'm home now and able to think more clearly.
John, the motors don't get hot at all. even after slewing all over the place until a stall. Motors are still cool.
Allan I've swapped both cables over still stalled, even ran RA from Dec the dec port and Dec from RA port and used the Dec buttons to move in RA etc. Still stalled.
I know where you are coming from Chris. This has been an ongoing problem, only now it is much worse. I've rebalance the scope and rechecked the RA Worm connection so many times now I could do it in my sleep. The stall only occurs when the scope passes the meridian to the west, never on the east. It will go for weeks with no problem and then suddenly it will start this rubbish. If I remove the motor and gear box I can turn the RA Worm with my thumb and one finger so it is definitely not too tight. There is the occassional tightish spot, but still turnable by finger. Hell tonight I totally loosened the worm so it wasn't touching and released the clutch and it still stalled!!!
Fred that is what happened when I removed the motor and let it run free. It still showed a stall but the motor still kept turning. Doesn't happen when its connected though. The whole thing just slams to a stop. Sometimes I can hear the motor struggling, but when I take it off I can turn the worm by hand without a strain. Even dropping slew and goto speeds haven't made a difference. I don't just get "motor stalled" Fred, I also get "tracking stopped" and that can occur after a successful goto.
I need a drink.
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