Just bought the aircraft and I am currently having problems with it. Upon the starting the aircraft the GNS530 will turn on but once I switch to the GTN750 or GTNXI the screens don’t work. I have tried switching screens before starting the aircraft and also switch screens after it has started the turned my avionics off then back on but only the buttons light up and screen doesn’t turn on.
Anyone have any advice or know what I’m doing wrong that the screens on the GTN750 and GTNXI won’t turn on at all?