DavB

Thank you very much Cosmic Geoff and PhilB61. The power supply was indeed the problem! When I bought the scope from an eBay seller it came with a portable car battery jump starter. To use the scope I charge this overnight and then use it to power the scope. I was taking a shortcut this time by plugging the charger used to power up the jump starter directly into the scope. Although this appeared to work (handset responded as expected) I guess the voltage wasn't up to driving the motors properly. Setting things up using the jump starter everything works as expected. I feel a bit stupid now, but very pleased that I didn't disassemble the motor gearbox. One final thing, what degreaser and grease would you recommend that I use in order to clean and re-grease the ALT gears seeing that I wiped off a lot of the old grease. Can I just use a bog standard Kilrock degreaser that doubles up for cleaning ovens or WD-40 based product or should it be a specialist product? For grease I believe I need a white lithium based grease? Thanks in advance and for all the useful pointers given by everyone. Much appreciated! DavidB

-Thanks for all the info. I was about to switch the ALT and AZ motor connections but put them back in their correct sockets to check out a couple of other things first. This is what I've found: = - With slew rate set to 9 ALT doesn't work, AZ does. - With slew rate set to 7 both ALT and AZ work (but AZ sounds like it's not that smooth). - With slew rate set to 8 both ALT and AZ work internittently. - At lower slew rates I can't detect any motion but that might be normal. I tried to align the mount using the 2 object method. With rate set to 7 both motors were turning OK. After I had set the first object and selected the second the motors didn't turn at all, it just said the alignment was successful. Any ideas what on earth could be going on??

Hello, I'm fairly new to this so please bear with me... I have a Skywatcher AZ Goto telescope - it has been stored inside and hasn't been used for probably two years or so. My grandson is now getting interested in the night sky so I got it out but found that the ALT slew wasn't working - no movement at all. I've dismantled the mount as per a very good video I found on the web hoping that it would be a simple case of cleaning and re-greasing - but sadly not. I have removed the main large cog wheel assembly and verified that the motor itself is stuck. When I use the slew buttons on the handset there is a slight click from the motor but no discernable rotation opf the small cog wheel. I have removed the motor completely from the mount and cannot turn the small cog by hand (don't know if this is expected though?). What next? Should I attempt to disassemble the motor to get to the internal gear assembly? THe video suggests that this is not an easy task but I don't see where else to go. All suggestions very much welcome!