Hi Guys, my 05 x5 nav screen recently started going nuts, looks all scrambled, like an old tv. This is the 16;9 screen. before this happened the screen was loosing some color but would come back from time to time. The screen did come back completely yesterday but today its all scrambled again. Can I swap the screen or is the unit in the back bad?? Please help!!!!!

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99 540i sport, acs type 2's chrome, acs spler pdls,Euroclrs
04 745i aw sport,21's aib's acspedals& rf splr(sold)
00 328i Prem Aw18" 335spt whls(sold)
02 Corvette 6sp,z51,2"drp,19"ccw'sshrt shft,corsa exh,dd nav
05 X5 3.0, pana rf,nav,xenon,cldweather, premium.ipod hookup, 20"4.6rims staggered 315rrs.
06 750I aw, sport. chrome21's,acs pdls,acs rfsplr,mtecs,8k hid fogs,Leds.oem ipod&sirius
03 VIPER, forgelinewheels,tune,exhaust,intake.