Hi Anthony, all, We have similar frustrations, but likely different answers. First it is very important to have a real power supply (like the AC power supply AP offers) or a well maintained battery

Chuck, I had the same problem, random uncontrolled slews, after my CP3 servo and/or its connectors got wet. After drying everything out with a hair dryer everything went back to normal for about an

So many problems seem to be caused by low or fluctuating voltages that it might be worth talking about BMS or Battery Management Systems which have been used by the military for many years to deal

low voltage, especially intermittent, like you have when there's a broken wire, can cause the digital controller to behave very strangely. someone had mentioned replacing their power cable. I'd

Richard, Thanks for the suggestion. I'm using the Pyramid power supply and it also has performed flawlessly up to this point. Would low voltage cause the mount to move erratically even before

low operating voltage is my guess Chuck

Chuck, I had to replace a power cord de to "fraying." Good to have a second set of cords. George _____ From: ap-gto@... [mailto:ap-gto@...] On

I've had a 900GTO for nearly two years. It has performed flawlessly and brilliantly for the entire time. Until this weekend. On start up, after keying in the location, the mount runs away in Dec.

Anthony, et al -- I've thought about this some more (it's cloudy here, you see), and I do believe a broken contact in the Y cable could explain these symptoms. Each branch of the Y cable carries 5

Anthony, You may also want to check the gear trains on the DEC and RA axis.. Roland describes in detail how to troubleshoot this in post # 19852. Mark still time, zero, is location the all

Hi Mark, The keypad seems to be fine since I see the original "Astro-Physics V4.12" and then followed by the typical menu for choosing my location ("1") and followed by the calibration menu (I always

Anthony, After the mount accelerates and you see the overload condition (yellow LED) and the unexpected slewing stops, is the keypad still powered up. If it is, you may want to confirm your clock

Note to self: order extra Y cable with the new mount :)

Hi Bill, that I have tried three sources of power ... my original battery with which the problems started, the new battery purchased today as well as one of those portable 17Ah batteries which I was

ayiomamitis wrote: Anthony, In my mind you have not actually verified the power source ?. Until that is done you might be chasing rainbows. Certainly you must have available a 110 <=>13.8 VDC power

Hi Jeff, Your offer is very kind and generous but I suspect it would be better to wait for Rolando and/or Howard to get back to me in relation to my message to them. The Y-cable is the only item I

Jeff Yes, I streeeetched the cable but was embarrassed to admit it! <G>. At least it prevented the scope from hitting the pier! Richard

Anthony -- I guess I didn't read closely enough. I thought you had run the test with the Mach1 Y cable. I also have a spare Y cable, but I've never used it after soldering new wire into it. I

Hi Jeff, I pulled out my Mach1GTO controller plus the Mach1GTO power cable and a 17Ah battery which one can find at stores such as Target for about $30 which allows me to bypass the use of a car

Richard -- Ha! So there is someone else out there who's sheared a Y-cable. FWIW, both the motor voltage supply wires (+ & ground, but they switch depending on which direction the motor is being