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1.7 GHz dual-core Intel Processor (Turbo Boost up to 2.6 GHz) with 3 MB shared L3 cache

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vertical and horizontal lines with blue background

hi, my macbook air mid 2012 show some vertical and horizontal lines while no proper display on screen, look like this image

Block Image

Block Image

can some one give me some clues about my macbook problem?


Answer this question I have this problem too

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Looks like the screen is faulty, maybe it was dropped before or some liquid drops got under the aluminium bezel whilst cleaning. You can double check it’s a screen issue by plugging an adapter to a monitor/Tv through the thunderbolt port, if the image is fine on external, the display needs to be replaced.

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when I plug to monitor in thunderbolt port, my monitor blank to save mode.


@mars erik No idea of what you mean by "blank to save mode". You should see your desktop on the external source.


@arbaman I mean my monitor blank not display anything, only flaoating message on screen tell that monitor is going to save mode


@mars erik I can't tell much about that, it doesn't seem to be related with Mac, did you use that monitor as external source before ? Do you have another device..a TV ?


its very confusing me, because when I plug to external monitor that no video/signal from the display.


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mars erik will be eternally grateful.
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