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2.2 GHz (Turbo Boost up to 3.4 GHz) or 2.5 GHz (Turbo Boost up to 3.7 GHz) quad-core Intel Core i7 processor with 6MB shared L3 cache.

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Replaced battery, Mac boots, Blank display, but external works fine.

I'm doing a repair on a prof's computer, I replaced a swollen battery on a Mid 2014 Macbook Pro retina, the external works ok, but the main laptop display doesn't... Battery came from amazon, listed on box as Late 2013 - Mid 2014 its from Egoway Model A1494, 11.26 volts 95 Wh 8440mAh Li-ion Polymer. could it be the battery? could it be the display?

UPDATE: someone worked on the macbook prior to me, they hosed the display cable on the top right putting the case back together. so essence… it needs a display.

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Answer this question I have this problem too

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It’s possible to “harvest” that eDP cable from a broken display (exact same model/year) and you’ll be good to go! Let me know if you find one & need to know how.

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which screwdriver I need to open MacBook Pro?

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Charles Dawson will be eternally grateful.
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