coedybrenin2

On 08/03/2022 at 11:52, malc-c said:

If the handset displayed a "no response" message for either or both axis that would suggest that the issue is a damaged control board.  The fact the handset is displaying "slewing" and other information would suggest that the communications between the handset and motor board in the mount are fine, and the issue is more mechanical rather than electrical (unless the power keeps dropping due to a damaged port which would stop the mount slewing).

When you say the mount doesn't slew, is it still making noises, ie the motors are running or do the motors stop.  Is the mount belt driven or does it have the original gearing.  ?  In either case it's worth removing the cover over the motors to check the gears are meshed or the belt still has tension.  I would also slacken off the worm gear on both axis and check that the mount rotates in both axis without binding.  If it binds with the worm disengaged then it would suggest that the issue is mechanical, which could be bearings or a bent shaft. If it freely rotates in both axis, and both motors turn correctly then maybe it's just a case of remeshing the drive train for both axis which hopefully resolves the problem.

Even the motorboard can be fixed if it turns out to be the suspect.  - have a read of this thread

Thanks for the responses - the handset does not say error or no response and when it says slewing the mount does not move anything and there is no noise indicating the mount is trying to slew.
Initially I thought it may have been powerbut I am using the LiFePo4 power tank so ? Can rule that out. 

The mount has the original gearing. I did take off the cover and watch as it did slew and it seemed to work.
when I was out the other evening testing to see if it was u/s I noticed, while using red dot finder it slews for a while and then appears to jump, which says to me its the worm gear on one or both of the axis.