When I turn the unit on, it comes up in a window:
MATRIX SERIES BOOT
VERSION
4.300 JUL 21 2008
0. Keyboard Test
1. LCD Frame test
2. Color Panel Test
3 Tone Check Test
4. Backlight Test
6. A/D Check
9. Program
Z. Reset
Use Cursor (V/D)
To Select
Press View (V)
To Start
Press Exit (E)
To Exit
I went through all the option, nothing fixes the unit.
Call Humminbird, They said the unit needed to be sent to them for repair and it would cost 247.97. WOW, I thought they would send me a reboot SD Card. Was I wrong! The 798C SI is next to my console and I use to get close to where I am going to fish. I use my 788CI on my trolling motor to control where I am going fish. I am retired and on a fixed income. I guess I am going have to wait to get 798C SI fixed.