Skysensor 2000 PC RA motor jumps

[Scope390]

Hi All,

I am having a issue to a newly aquired SS2k. I have  SS2ks total of 5 sorry 6 either  ver 2.06 or 2.10 that I accumlated over 20 some years , I have motors and cables. Anyway my RA motor jumps acting as the motor and encoder are missing sync. Now I tested and used different cables and motors all with the same result. I tested in different modes, settings ect. Now when I got this the 3.6 bat was dead and that has been replaced.

So this looks like new condition and Im wondering if a incorrect polarity supply may of damage either a chip or a cap. Now I also reseated the roms. I also inspected the boards and pins the past 2 nights for cracks connections ect.

Now the motors will slew during goto, also the motor moves by the button commands, just when its tracking it will jump ahead a 1/4 turn around every 15 seconds.

I have some experiance building stepper boards and other contols ect.

Any suggestions what to troubleshoot will be great.

Jim

[Neko]

Hi, 

did you try changing the motor value (ranges from 1 to 3 ) in the settings ? 

Regards, 

Carles. 

[Scope390]

Hi Carles,

I was doing more troubleshooting last night. The RA motor does not track it hums/?/, I thought it was, I had the encoder display count up, as the motor is engerized, I think the ss2k trys to move the ra motor sidereal to the next encoder count, thats why I get the jump. I have ohm the connector just to make sure, I have ohn the pins connections between the boards and other things.

I changed the setting to land no issues, but the tracking circuit is not being used.

I changed out the ROMS and still the same issues. I'm thinking the motor driver chip may be bad, 

 

Jim

Edited September 19, 2022 by Scope390