One of my fishing buddies had a new Helix 7 Chirp SI GPS G2 installed at a marine shop in town. His boat is an older Ranger R93. They installed the transducer that came with the unit which I believe is the XNT 9 SI 180T. It's installed on a bracket on the step off to the right of center. I helped him with the settings at his home after it was installed. Transducer selected is Compact Side Imaging and User Mode is Advanced. We took it out fishing for the first time the other day. It had no working SI or DI. Just two black screens. And no 2D sonar while on plane. Sonar works while sitting still, idling and fishing but not while running. He's taking it back on Monday but I was looking for ideas so I could help him discuss this with the boys in the shop.
Any ideas?