Background: New MacBook Pro 15″ has been water-damaged, fully functional except the touch bar not working. Apple quoted $2000 for replacing the entire logic board. MacBook Model Number A1990 Year 2018 Logic Board Number 820-01041-07. Diagnosis: This latest model was just released a few months ago cost $4000+.There is no schematic (electronic circuit diagrams), no … Continue reading How to fix 2018 MacBook Pro 15” touch bar not working issue?