I recently had that exact same issue with a Helix 9 SI G2N. I called Humminbird and they provided me a shipping label to send it in and they repaired it for free also. Can't beat that service! They replaced the guts and it was like new. Showed 0 hours when I cranked it up.

I would call back and tell them you followed the directions and it croaked. I didn't have to plead my case luckily. Good luck!

Sent from my SM-G955U using Crappie.com Fishing mobile app