my 2011 DDM 60 is not tracking well:
it will point and track well initially
but then intermittently slews away from the target in RA (with software showing change in position)
sometimes it will come back to the original location after a minute or so, other times it will give an error ?voltage? and stop tracking.
the mount is well balanced and has tracked smoothly for years
i've no idea where to start on trouble shooting.
i've never changed the bearings
new power source, cables?
any help would be appreciated.