820-02757 no touch ID

Sr. Robot

Member
820-02757 that had liquid damage on touch ID 16v booster.

UT600, CT610 and LT601 were corroded and are now replaced. Still touch ID is not receiving 1.8v

I get this readings on R2210 with the board disconnected (touch id connected/disconnected makes no difference):

PP1V25_S2 = 1.25v
TOUCHID_PWR_EN = 0v

Bad Touch ID sensor (it looks fine and also does the connector) or bad SOC?
 

2informaticos

Administrator
Staff member
Check if other component was damaged by liquid, in pages 111 & 112.
Compare diode mode readings with good board.
Try another Touch ID button; macOS Tahoe should pair it.

Do you get 3V0 at JT500?
 
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