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Hi, I have same 2 Boards and no green or orange light, no Fan spin, no Power up to start.3.425V "G3Hot" Supply exists.
SMC_BC_ACOK= 3,2V
PP18V5_DCIN_CONN = 18,77V
ONEWIRE_EN = 9,27V
On all pins of Q7030 is 18V present.
You're right, I changed Q7030 and have now 12,26V to output of the ISL6258 charger circuit.
But still no green or orange light and does not start!
I've been watching, after 6 hours I have connected the power and the Magsafe led was orange. When I separated the connection and again conjoined the MagSafe no led is to see more.
I tried with smc_ONOFF_L pin to start, but to no avail.
PIN 4 of U6915 Onewire_Overvolt give 0,02V, is this normal?
He asked for resistance to ground. This means that you need to stop applying power to the board and turn the multimeter to ohms mode rather than volts.