I plan to call PP tomorrow morning, because they are always really helpful, but I wanted to see if anyone has dealt with this problem before.
I run Star Gazer 9.0 with Zbox on a DBW Malibu RLXI. It has been dialed in and working perfectly for me for 5 months. Yesterday, it went nuts on me. It wouldn't GPS lock for a while (where the course is, and we use it regularly). It finally locked on, but then the speed went up and down like crazy. Then it would lose signal again. Finally got it locking on, and it just wouldn't hold speed, in trick and slalom mode. I did a system reset - no help. I unplugged the GPS puck from the Zbox and plugged directly into the master module. That seemed to help it get a signal, but the engine kept ramping up and down. I plugged Zbox back in, and it smoothed that out, but it wouldn't hold speed. I finally put it into classic mode, so I could ski, but it intermittently lost the course. I'm guessing that maybe the GPS puck went bad. Does that happen? I've got another working puck on my other boat. I may swap them out to see if that's the problem. Anyone else confront this problem?