My 2010 i5 1286 Macbook Pro is fully functional except for the screen images can only be seen with a flashlight. Apple Genius Bar's 16 point hardware test confirmation all green boxes checked, including the display, graphics and logic board. I manually switched between Integrated Only, Discrete Only and Dynamic Switching using gfxCardSatus. In About this Mac>Hardware>Display/Graphics the Intel HD Graphics and the Nvidia 330M report as Main Display: "Yes" as i switch back and fourth between graphics cards... But ONLY the external monitor lights up images when placed in "Discrete Only Mode" with the Nvidia graphics card... When switching to anything else in any combination even the Integrated Only Intel HD Graphics the laptop screen and the external monitor dont light up at all. BTW everything is set to Mirrored... SO, the question... Is it the laptop screen backlight like the Genius' thinks it is? aka, replace the whole display on this model or is it something else like that fuse/capacitor on the logic board preventing power to the graphics cards from switching back and fourth? I am just reluctant to get a whole new screen because of the Nvidia being stuck and the Intel HD card not bringing up any images on the external monitor because its not being told to do so. Thanks.
As always the Apple products are proprietary and DISPLAY post has issues. Disregard all the testing with other adapters and displays and replace the inverter first, it is the cheaper option.
SOURCE: I'm trying to hook up my Westinghouse L2410NM 24
You need to change the refresh rate, some monitors operate on 60 Hertz, and others on 70 or 72 Hertz, try changing the refresh next to the resolution choices.
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