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I have replaced the wifi ribbon cable in my Mac once before, but whenever I shake the mac, the wifi disconnects. Is this an issue with the new ribbon cable or is it an issue with the antennae in the display?
Can you take a few pics so we can see things. Disconnect the ribbon cable from both ends take a nice sharp picture of the connector faces on both the cable ends and the logic board & Airport bd carrier so we can see the pins. Adding images to an existing question Update (12/21/2019) We don’t have guide to replace the antenna assembly as it rarely needs replacement. Often the cables get damaged going through the hollow hinge, I fear that’s what has happened here. Give these a good read: How to Replace your MacBook’s WiFi AntennaMacBook Pro 15" Unibody Mid 2012 Display Replacement
