gap-ruse-pried
New member
I have a MacBook Pro A1708 non touchbar that wont boot. Getting 20v, but only 0.5a when ssd is disconnected, around .65a when ssd is connected.
Upon plugging in usb c power, the fan spins for 30 seconds then stop. It’ll go again after a little while, but stop again. Like it’s trying to start but can’t.
Tried caps lock and got no light. I do have a usb c to regular usb adapter, so I plugged in a couple flash drives. One of them was blinking rapidly and consistently, the other didn’t blink at all. When I plugged them into my regular pc, they both light up and flashed normally.
Also tried a usb c to hdmi adapter in case it was just a display issue, but I didn’t get an image on the monitor.
I’ve tested some components as noted below:
PPBUS_G3H (F7000) ~13.08 V
PP3V3_G3H (C7080) ~3.42 V
PP5V_S5 ~5.12 V
PP3V3_SSD ~3.32 V
PP1V8_S0 ~1.8 V
PPVCCCPU_S0G ~0.95 V
PPVCCSA_S0G ~1.04 V
L7410, L7420, L730 0 V
SMC_RESET_L ~3.42 V
SMC_BC_ACOK ~3.42 V
PM_RSMRST_L ~3.3 V
PMIC_RSMRST_L ~3.3 V
PM_SLP_S4_L ~3.42 V
PLT_RST_L ~3.32 V
Not sure where to go next? I have experience with microsoldering but mostly on consoles. This is my first time doing any sort of Mac repair, so any guidance is appreciated!
Upon plugging in usb c power, the fan spins for 30 seconds then stop. It’ll go again after a little while, but stop again. Like it’s trying to start but can’t.
Tried caps lock and got no light. I do have a usb c to regular usb adapter, so I plugged in a couple flash drives. One of them was blinking rapidly and consistently, the other didn’t blink at all. When I plugged them into my regular pc, they both light up and flashed normally.
Also tried a usb c to hdmi adapter in case it was just a display issue, but I didn’t get an image on the monitor.
I’ve tested some components as noted below:
PPBUS_G3H (F7000) ~13.08 V
PP3V3_G3H (C7080) ~3.42 V
PP5V_S5 ~5.12 V
PP3V3_SSD ~3.32 V
PP1V8_S0 ~1.8 V
PPVCCCPU_S0G ~0.95 V
PPVCCSA_S0G ~1.04 V
L7410, L7420, L730 0 V
SMC_RESET_L ~3.42 V
SMC_BC_ACOK ~3.42 V
PM_RSMRST_L ~3.3 V
PMIC_RSMRST_L ~3.3 V
PM_SLP_S4_L ~3.42 V
PLT_RST_L ~3.32 V
Not sure where to go next? I have experience with microsoldering but mostly on consoles. This is my first time doing any sort of Mac repair, so any guidance is appreciated!
