screen black but external works perfecti have a macbook aluminium 13.3 inch late 2008 (A1278) my screen is black and my external mini dvi works perfectly when...
Answer to "Can a motherboard fail and still drive an external monitor?"i had the same prolem with my macbook, i bought a new screen and that did not help. i am a computer repair tech and i tried everything around. the only logical answer i came up with was that there was something wrong with the ribbon cable connector on the motherboard. so i ordered a new logic board and a lvds cable and bam worked perfect. my macbook DID work external monitor perfect. so i would start with a lvds cable if you have not dropped it to mess up screen, if that does not work i would go with logic board myself but u could always take the next cheapest route and get a new screen. hope this helps if you need any other help firstname.lastname@example.org is my email