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Hi friends i have 820-2879-B. Led green, not power on. Voltages are measured and:
PAD POWER 3.40V
BIOS chip PIN 1 3.31 PIN 3 3.32 PIN 8 3.31
SMC_BC_ACOK_VCC =3.39v
SYS_ONEWIRE =3.37v
PP3V42_G3H_ONEWIRE =3.39v
SMC_BC_ACOK = 2.50v
not that other measures have to be verified. Thank you