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Blank screen on bootup after water accident

After a water spill when I turn on the MacBook Air I hear the gong and sometimes I get a brief glimpse of the apple logo. Then just a black screen. Do you think this is a mainboard replacement or a new screen/video display? Thanks.

Mark

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First I would open the system up and inspect the LVDS cable connection for corrosion damage as any liquid spill tends to mess it up. Take some pictures and post them for us to see Ajout d'images à une question existante. Follow this guide to Step 3, then jump down to Step 20 Remplacement de la carte mère du MacBook Air 13" début 2015 carefully disconnect it and snap the logic board and cable connector ends so the images are clear.

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