Hello. A relative of mine purchased a red Robosapien V2 on sale and didn't have a chance to open it up until after the 90 day return policy expired. Unfortunatley there were two problems with it. One I've already fixed (one spring in the foot had pulled the anchor screw out). The other I can't figure out though, and I'm wondering if anyone has some suggestions:

The left shoulder will rotate up just fine, but then won't rotate back down. It isn't an issue with the remote because it does the same thing during the startup "exercise" it does. I've opened up the chest and switched the left and right shoulder pots, to see if that would help, but it has the same symptoms. After some fiddling I found that if I rotate the arm down and back far enough that the "shoulder down" button on the remote will work... but it moves the arm up, not down. It rotates up about half an inch and then stops again. So somehow it seems like the circuitboard is never sending the reversed polarity to the shoulder motor to make it rotate down. Instead it only rotates up, and even then only when the arm is in the wrong position.

Has anyone run into this before, or does it sound like this is something that can't be fixed at home? Any assistance would be greatly appreciated. I wouldn't be against completely replacing the circuitboard if the cost wasn't too high and if that would fix the problem. I just don't know if that's really necessary.

Thanks in advance!

Cheers.