Chosen Solution
I’m having problem the keyboard and the trackpad, it’s freezes. Sometimes SMC reset does the trick, but after awhile it will freezes again. I’m looking through boot log and got this: (IOHIDFamily) Invalid digitizer transducer So I’m just curious is the touchpad is the one to blame? And so I want to disconnect the trackpad without disconnecting the keyboard. I see 4 cables on the trackpad:
??The cable to the mainboardThe cable to the keyboard?? What is cable number 1 and 4? Curious if these cables are the actual trackpad cable, and wondering can we disconnect these cables?
I bring the macbook to a local repair shop, they were able to identify a transistor that malfunctioning in the motherboard, and after replacing it, the trackpad and keyboard works fine. Thanks for your reply @danj !
The trackpad has three functions The Trackpads input and decodeKeyboard input and decodeConnection for the signals to the logic board In your case the decode logic is damaged within the trackpad, you’ll need to replace it. Your keyboard won’t function without the trackpads decode logic. MacBook Air 11" (Mid 2011-Mid 2012) Trackpad
