Hi there,
when I connect my display, it is recognized by iMac (2012) and Macbook Air, it shows up as LED Cinema Display, speakers, mic, iSight camera, USB ports are working and I can move the mouse cursor where the display should be.
But the screen is black. No dim light, no faint image under a flash light, it is pure black. Additionally the iMac seems to have micro freezes or at least the mouse moves very slow and stutters when I connect the display. The MacBook Air's internal display shows artifacts and it also seems to freeze and the mouse doesn't react well. As soon as I unplug the display, everything goes back to normal.
Can only the LCD be the faulty part here? How can I find out what needs to be replaced? I've read about voltage checks on power supply and logic board and test points, but where do I find a 'map' of these boards to identify these test points?
lg, Alexander
when connect my display, it is recognized by iMac (2012) and Macbook Air, it shows up as LED Cinema Display, speakers, mic, iSight camera, USB ports are working and I can move the mouse cursor where the display should be.
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when I connect my display, it is recognized by iMac (2012) and Macbook Air, it shows up as LED Cinema Display, speakers, mic, iSight camera, USB ports are working and I can move the mouse cursor where the display should be.
But the screen is black. No dim light, no faint image under a flash light, it is pure black. Additionally the iMac seems to have micro freezes or at least the mouse moves very slow and stutters when I connect the display. The MacBook Air's internal display shows artifacts and it also seems to freeze and the mouse doesn't react well. As soon as I unplug the display, everything goes back to normal.
Can only the LCD be the faulty part here? How can I find out what needs to be replaced? I've read about voltage checks on power supply and logic board and test points, but where do I find a 'map' of these boards to identify these test points?
Hi there,
when connect my display, it is recognized by iMac (2012) and Macbook Air, it shows up as LED Cinema Display, speakers, mic, iSight camera, USB ports are working and I can move the mouse cursor where the display should be.
But the screen is black. No dim light, no faint image under a flash light, it is pure black. Additionally the iMac seems to have micro freezes or at least the mouse moves very slow and stutters when I connect the display. The MacBook Air's internal display shows artifacts and it also seems to freeze and the mouse doesn't react well. As soon as I unplug the display, everything goes back to normal.
Can only the LCD be the faulty part here? How can I find out what needs to be replaced? I've read about voltage checks on power supply and logic board and test points, but where do I find a 'map' of these boards to identify these test points?
lg, Alexander