Hi folks, I seem to be having issues with my 2018 CRV head unit, non-nav. A couple of days ago I turned on the car and the screen was completely black with occasional flashes of symbols along the top of the screen. Turning the car off and back on restored it. Yesterday, the screen came on and I'd had the radio off and it wouldn't turn on, and turning the car off and back on didn't restore it. Suggestions?