Chosen Solution
help please I tried to replace the flex cable my self the cable that connects the mother board to the screen. Unfortunately after i turned it out to try it before putting all the screws and everything back. The screen is not working at all not even with the old cable. Mac is turning on I can heard. I can even play music guessing what I am doing. And also by using with the Touch Bar. I connected to an external monitor with the c cable but is not working. Please help I am freaking out I fell I make it worst by trying to fix it myself thanks.
The short little cable between the main logic board and the T-CON board is not the failure here. The T-CON board its self is the issue (which is part of the display). I’m suspecting you might have damaged the connectors either on the main logic board or the T-CON or the cable its self. You’ll need to inspect the connector and cable pins for damage. In any case you’ll need a new display to fix the real problem here MacBook Pro 15" Retina (Late 2016-2017) Display Assembly and here’s the guide MacBook Pro 15" Touch Bar 2017 Screen Replacement
