Magnus
IMHO "interrupted" can only come from one of four things:
A): A handset Ra/Dec button was activated during slew (either by touch or electronic failure, aka a momentary short cct);
or
B):Something is wrong with the way the system computes commands and is causing slew failures yet the system does not think there is an error!? Something like EPROM data.
or
C): Maybe you are correct pointing error model?
or
D): External issue such as RS232 causing or issuing a command during slew.
Failure A): Most likely its not this as the issue occurs during goto slews not park slews etc.
Failure B): This is possible.? Do you have your old EPROM? Can you R&R it back in?
Failure C): Its possible.? You may need to completely reset the Gemini data and start again, maybe don't do a point model yet just do cold start and re-input appropriate data then try some goto's.
Failure D): Its possible, ensure anything RS232 is removed and test.
This is about all I know on this.? I really do not think its an electronic issue requiring multimeter probing however I can supply info on where to test if you want to look at this....just in case.? Please say if you want to pursue this avenue.
A bad EPROM is possible and well we wouldn't know until replaced.?? I can send you a lvl 1.04 or 1.05 to try if you want.? I'm happy to...all free...just want to assist as best I can as this is nagging me so it must be really peeeving you off!
As for point model errors or corruption.? This is quite a possibility.? The only way to tell is to dump the current re-set Gemini and test without a model.
Well that's all I can think of.? Of course a sweet Gemini 2 might be starting to look favourable.? Maybe ask Losmandy for upgrade cost?
Tell us how you want to proceed
regards
Brendan?
