Chosen Solution
Macbook pro 13" mid 2014 works on external monitor but nothing on the retina display. The edges of the screen show white light. It blinks when it boot. I checked the connector and cable, they seems to be fine. Any idea?
Common issue on 13" Retinas, usually randomly happens or when it is knocked, and causes no picture or a black screen. Reconnect the LCD cable logic board side first, since this usually resolves the issue (disconnect battery of course). If this doesn’t work, reconnect it screen side, watch from 5:23 here https://www.youtube.com/watch?v=ZLNUjeUL… If it is still not showing picture, try a new LCD cable. Check the screen board for liquid damage, and then the logic board if there is still no luck with this, but a reconnect should fix it.
I think it’s not the connector on the logic board but the connector from the lcd. You can try to reconnected the lcd cable. It’s under the black clutch.
