MeFr2211

Hi all, i recently purchased the Lear and it seems a nice plane. She flies well, but..... when i change views, like i go to map view to look for the ils freq. and then come back to cockpit view, i get a black screen or a very fuzzy screen. Can do nothing more then end the flight and start over again. Never had that with other planes i purchased. Anyone on what the problem could be? thx,