My navi screen is messing up. It went black a few weeks ago & has either worked for a few minutes & then froze on whatever screen it's on or stays black. Recently it either freezes on check disk or just glows black. I have removed & cleaned the disk. What else can I check to fix this? I have 4.64 disk I think. Thanks

 

I had all kind of intermittent issues with my Nav not long ago. It turned out to be some loose connections on the back. It works great now. I'm not sure if you upgraded to NAV but that could be your problem.

Thanks,
Paul

 

https://acurazine.com/forums/2g-rl-audio-bluetooth-electronics-navigation-90/05-rl-nav-issues-need-help-asap-774648/