I recently bought 360 non mega and it has been working great then all of a sudden just stopped working... Will not come up on my Helix or anything. I plugged in another 360 unit that my friend has and it comes right up. Called humminbird today and the lady seemed like she had no way to help troubleshoot and told me it would be $495.45 just to send it in no matter what the issue was it was going to be basically $500. Will someone please give me a call and see if there’s any other option for this? Thanks. 319-929-6776