Hello All, I just wondering if anyone else has had this happen to them. the first time out this year my 798c SI HD was flickering a little when I first got on the water. Then the screen just went all white. I can hear it beep when I push the buttons and it acts like it should when you power it off, holding the power button for it to power off, but the screen is totally white, nothing shows up. I was wondering do I have a power issue, I have 2 mounting stations one on the bow and one on the stern and i have tried the both and it does the same thing in both places, or could it be that I have to update the software? Thanks for any and all advice with this problem.