GNS530 screen black (but GNS is on)
My GNS530 screen won't turn on. Battery is over 10v. Turn the "c" knob but nothing happens...
I tried restarting the flight many times.
Is it because of SU6 ?
When I click on the button to swap NAV1 channels for instance, I see on the VOR that I'm changing from a channel with reception and without. So it's actually turned on but the screen is black