Hello,
I have a MacBook that is stuck on the question mark folder.
With the motherboard fully out and charger plugged in:
20 volts on charger, 0.43 amps
PPBUS_G3H = 13.10 volts
PP3V3_S5_SSD = 3.3 volts
PP0V9_SSD = 0 volts
PPVIN_2V7_NAND = 13.10 volts
PP1V2_SSD_HOT = 0 volts
PP1V8_SSD_HOT = 0 volts
PP1V2_SSD_COLD = 0 volts
PP1V8_SSD_COLD = 0 volts
PP3V3_2V7_NAND_VCC = 0 volts
U9400:
pin 19 - PP2V7_NAND_VCC = 5 volts
pin 20 - PP2V7_NAND_PVCC = 5 volts
pin 15 - P2V7NAND_EN = 0 volts
SSD_RESET_L = 3 volts
R9420 pin 2 PICCOLO_VEN1 = 0 volts
PPVCC_CPU_PH1 = 0.5 volts
PPVCC_CPU_PH2 = 0.8 volts
I tried holding option key to see if I can see internal storage, but keyboard doesn't respond. Not too sure why. Tried PRAM reset, doesn't respond either. Any advice?
I have a MacBook that is stuck on the question mark folder.
With the motherboard fully out and charger plugged in:
20 volts on charger, 0.43 amps
PPBUS_G3H = 13.10 volts
PP3V3_S5_SSD = 3.3 volts
PP0V9_SSD = 0 volts
PPVIN_2V7_NAND = 13.10 volts
PP1V2_SSD_HOT = 0 volts
PP1V8_SSD_HOT = 0 volts
PP1V2_SSD_COLD = 0 volts
PP1V8_SSD_COLD = 0 volts
PP3V3_2V7_NAND_VCC = 0 volts
U9400:
pin 19 - PP2V7_NAND_VCC = 5 volts
pin 20 - PP2V7_NAND_PVCC = 5 volts
pin 15 - P2V7NAND_EN = 0 volts
SSD_RESET_L = 3 volts
R9420 pin 2 PICCOLO_VEN1 = 0 volts
PPVCC_CPU_PH1 = 0.5 volts
PPVCC_CPU_PH2 = 0.8 volts
I tried holding option key to see if I can see internal storage, but keyboard doesn't respond. Not too sure why. Tried PRAM reset, doesn't respond either. Any advice?
Last edited: