When I go out I have my 797 running by the time I get the boat in the water. I often run 15-20 minutes to where I will fish. I then troll for hours sometimes. The last couple of times out, the 797 has worked fine going out and trolling, then when I crank the big motor to move or head in it will shut off. I hit the power button and it comes back on for from a few seconds to maybe 30 seconds and shuts off. It will not stay on while running the outboard. If I move, it again works fine while running the trolling motor but shuts off when I crank the outboard. It also seems to be warm on the top back of the display unit. It is connected to the cranking battery and I always get a low voltage pop-up when I crank.

Anyone else have this problem or suggestions?