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Synscan motor control box for Orion SVP (HELP!)

Started by amstel78, 03/03/2008 03:18AM
Posted 03/03/2008 03:18AM | Edited 03/03/2008 03:18AM Opening Post
Does anyone know if the motor control box for the Synta CG-5 / Orion SVP would work with the Synscan GOTO for the EQ3-2 mount? They look exactly the same on the outside.

I don't know what happened tonight, but while I was in the middle of doing a 3 star alignment the motor control box started smoking. I shut everything off and brought the mount back inside. I opened the box to find a hole burned right through the DEC control chip soldered onto the board.

To cut a long story short, the DEC no longer functions, but the motor is still ok. The RA control is fine. I plugged the DEC into the RA output of the control box, and the motor still turns. So... not sure what happened, but something caused the DEC control chip to burn out. I did not have any thing reversed or crossed to my knowledge, and the mount was working fine until today.

Here are some pictures of the carnage:


This is a closeup shot of the DEC control chip:

RA control chip is on the left, DEC on the right:

Complete circuit board:



Regards,
James
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Posted 03/04/2008 03:15AM #1
James, it looks like surface mount resistors R21 and R22 got cooked, too. If you compare them to R11 & R12 next to the other chip (RA chip?), the color difference is obvious.

Ron
Equipment Forum co-moderator