I’m having an intermittent issue where I’ll turn the key on and the screen will light up and then as soon as I try to start it, the screen goes blank with no power. After that happens, I can’t get any power to the screen. The battery is brand new w/12.6 volts and I’ve checked the connections with no luck. I did hear a low whining/hissing sound in the battery compartment when I turned the key on, but really couldn’t tell what is was coming from and is was very faint. The green light will flicker if I turn the key rapidly, but won’t stay powered up.

Any help would be appreciated!