I have an A1398 820-00426 board that apparently has all power rails and is in S0 state, with fans spinning, but refuses to chime or start up. USB mouse shows a brief flash, then nothing. No apparent liquid damage. Where would you look next?
ALL_SYS_PWRGD: 3.2V
PPVCC_S0_CPU: 1.8V
SYS_PWROK_R : 3.4V
ALL_SYS_PWRGD: 3.2V
PPVCC_S0_CPU: 1.8V
SYS_PWROK_R : 3.4V