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VIDEO: https://www.youtube.com/watch?v=e3ecwhMH… Hi everyone, I have a 15’ Macbook Pro retina (Mid-2015) that had the display stop working this week. It works perfect when I plug it into an external monitor or TV through HDMI or thunderbolt = display issue. The webcam still works, but there is no light on the apple symbol on back of the screen,Problem started this week when slight flashing would occur and all of a sudden screen turned black (see video). There is 0 picture now and wont show anything. I was quoted 850 euro to get a new display…so obviously thats not ideal. I took it into a verified Mac Reseller and Repair store. All they could tell me was that I would need a new one (VMI: Passed, Worked with different known functioning Display). I have never abused the laptop and everything is in perfect working order other than the screen…I have tried resetting the VRAM and rebooting etc. If anyone has any information I would be really appreciative. It was working perfectly fine and all of a sudden the screen cut out.
Sad to say your logic boards mux logic is likely damaged. The video feed takes quite a few different pathways as it needs to feed both the internal and external monitors via Thunderbolt or HDMI ports. Here’s the guide and it has the parts info in it MacBook Pro 15" Retina Display Mid 2015 Logic Board Replacement
