This is a great forum! This is my first post so I hope you wiil bear with me...
I have had an ONIX unit in my boat for a couple of years (bought with software 2.000 already on it) and it has been trouble free albeit with a large learning curve! I have updated it and the I-pilot link to the latest software (2.700) and took the boat out for it's first voyage since the update last weekend. All was well for most of the day but 2/3's into the day the unit would not power up correctly. The following sequence of events occurred:
A). I would press the on button and the Humminbird logo would come on faintly, then brighter but the screen would not get to the point where the status bar shows and the unit would then shut down.
B). I then press the power button again and nothing. I tried this 3 or 4 times and nothing.
C). I have an on/off toggle switch on the negative wire and toggled this off then on then went though A). again. The unit would come on then off as described in A). above then B).
D). I checked ALL wiring connections to make sure they were tight and clean (my ONIX is in a center console and wired directly to the starting battery in the console via about 6 feet of all soldered connections). Then I went through A) and B) again.
E). After giving up, about a half an hour later or so the unit came on by itself and worked fine until the end of the day (I must have pressed the on button before giving up and the unit came on a half hour later.)
At the end of the day, in the dark, I shut the unit down when getting close to the launch ramp but then decided to turn the unit on one more time to better see where the ramp location on the lake. Nothing. Please note that in all of the above scenarios the battery voltage was at 12 or slightly better (I checked often) and I never had an issue starting the outboard. More info: I have the Stealth 1 charging system and the starting battery is a relatively new (several months old) Odyssey battery.
So I went out yesterday and the same issues were occurring largely as described above but now with a couple of new twists:
1). I had the screen on 2D and the background color went to black on it's own while fishing. I went to the sonar options section and selected white but it would not go to white. I could only get it to white by selected blue then white. It would then go back to black on it's own a again a few moments later! This happened several times over an hour or two and then it was fine.
2). I was in sonar options putting checkmarks in some option boxes (cannot recall which ones now) but when I put a checkmark in one box and then put a checkmark in another box the first box checked would become unchecked. Then a while later I could check all boxes as desired. Weird.
3.) At the end of the day I powered down the unit and then pressed the power button and the unit came right up (unlike what occurred the previous weekend)
I called Humminbird customer service and they insist 2.700 has nothing to do with these issues and they offered for me to send it in (they gave me an RMA # and FED EX label).
I am posting this to see what the VERY knowledgeable folks on this forum think before I send it in as I am fearful I will be getting a "No issue found" response from Humminbird after they check it out and maybe it is just something odd that I am doing or not doing properly.
I know this is a really long winded first post but I wanted to provide as much hopefully useful information as possible...
Thanks in advance for any thoughts or comments you may have!