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.
Is this a good question?