hello have in hand A2251 normally working but touch bar and hall sensor not working at all. tried other board in this macbook and touch bar and hall/lid close working. so it's 100% motherboard problem. how do you think touch bar not working because of amr sensors? i can't find in shematics any "lid close" line. lid open and lid left/right checked. u4802 changed
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820-01949 touch bar and lid close problem
- Thread starter farfan14
- Start date
"hall sensor not working at all"
What kind of measurements have you done?
Can you post U4802 signals (with lid open)?
What kind of measurements have you done?
Can you post U4802 signals (with lid open)?