I'm using the SBD12+SBDAPB and the 14inch Losmandy plate with my AP130GT. See attached photo. cytan

I have an AP130 GT. The older rings do not have the top center holes. I have the rings attached to an SBD12 lower dovetail. Will the spacing on the rings on the SBD12 + SDDAPB riser blocks on

Hi Marj, I got a piece of non-conductive foam that had the right thickness to compress the board down when the cover is screwed back on. See photo. Interestingly, I see flux residue on the pins of

Cytan, Some of the very first CP4s did not have the foam and yours may be one of those. Clear Skies, Marj Christen Astro-Physics 11250 Forest Hills Road Machesney Park, IL 61115 Phone:

Thanks for reminding me about the black foam being slightly conductive. Forgot about that :) cytan Be careful that you don't use something that's conductive, or you may have infinite

Be careful that you don't use something that's conductive, or you may have infinite problems. Electronic foam is slightly conductive to allow static charge to dissipate to ground. Rolando

I was just about to suggest checking the power cable and power supply... "My advice is always free and worth every penny!" -Christopher Erickson Observatory Engineer Summit Kinetics Waikoloa,

Thanks Marj! Pizza is definitely well deserved. I didn't see any foam when I took the cover apart. It's easy for me to add some black electronic foam to hold it in place. cytan

I'm glad you solved it. Actually Marj came up with the solution, so I am naming her "Employee of the Day". Maybe I'll make a Pizza for her tomorrow, with all her favorite toppings. By the way, there

Hi Roland, That was the problem! I pushed on the main board and could feel the board going back into its socket. It moved quite a bit. I have no idea why it would have moved out of its socket

Push on the main board. It may be loose. It can happen if you dropped the CP4 at some point. If it becomes loose, the LED will not light up and there will be no communication. It is held in place by

No, the big board on the left that has the main microprocessor on it. Roland

I pushed on it. But it didn't feel loose. But after doing that, the LED lit. I'll work on it later this evening ... Thanks! cytan

You mean this board that I put a rectangle around it?

Hi Steve, One other thing to try. Open the cover of your CP4 and push down on the small circuit board to reseat the connections. It is possible that it came loose from the main board. It is highly

It's one big fat zero right now. CP4 LED is off, and after I connect the ethernet cable, nothing blinks on the ethernet port (unlike the first part of last night). I opened up the plug for DEC and

Yes, initially it lite red. As soon as I directed east, the yellow light immediately went on and the mount would not move in the east direction. After restarting, the mount would move west, but not

Do you remember whether your CP4 LED lit up? Anyway, it was a very weird night. After powering up, with the CP4 LED lit up, I wasn't able to talk to the CP4 with USB. I changed USB cables and used my

Hi Rolando, I'll call George on Tuesday. In case, he does read posts on the long weekend, I did the following this morning: (1) Checked that the PS is spitting out 13.8V. (2) When connected the

My CP4 was showing similar issues. Turned out to be mount limit warnings. see below from Rolando. Roland Christen 07/31/20 The "Motor Stall" warning will occur when unsafe limits are exceeded.