Board had previous liquid damage. It was initially ultrasonic cleaned. Keyboard, battery, and trackpad flex cable were all replaced and it worked fine. Board is back for no power. Hoping someone can help me out here. Voltages taken with board, DCIN board, and original 85W charger only, no battery.
PPPBUS_G3H - 12.54V
PP3V42_G3H - 3.42V
ALL_SYS_PWRGD - 0V (No pulse when triggering SMC_ONOFF_L )
PM_SLP_Sx_L - Pulses when triggering SMC_ONOFF_L
PM_RSMRST_L - 3.28V
PM_PWRBTN_L - 3.42V
PCH_DSWVRMEN - 3.18V
PM_DSW_PWRGD - 3.43V
PPVCC_S0_CPU - 0V, No pulse
PLT_RESET_L - 0V, No Pulse
PP3V3_S0 - 1.69 - 1.75V fluctuating.
PP3V3_SUS - 3.33V
L7520 0v
L7430 0V
L7560 3.33V
L7710 0v
L3095 11.6v
L7130 12.54
L7320 0V
L7310 0V
L7630 26mV
U1950 PIN 5 - 0.8mV - 0.9mV seems to change (pulse?) between these two measurements.
U1950 PIN 6- 0V, no pulse
Board DOES start in SMC Bypass Mode with high fan spin.
I'm really not sure what to do here. I'm still new to board level repair so I was hoping someone can look at this and help me figure out what is wrong. Thank you.
PPPBUS_G3H - 12.54V
PP3V42_G3H - 3.42V
ALL_SYS_PWRGD - 0V (No pulse when triggering SMC_ONOFF_L )
PM_SLP_Sx_L - Pulses when triggering SMC_ONOFF_L
PM_RSMRST_L - 3.28V
PM_PWRBTN_L - 3.42V
PCH_DSWVRMEN - 3.18V
PM_DSW_PWRGD - 3.43V
PPVCC_S0_CPU - 0V, No pulse
PLT_RESET_L - 0V, No Pulse
PP3V3_S0 - 1.69 - 1.75V fluctuating.
PP3V3_SUS - 3.33V
L7520 0v
L7430 0V
L7560 3.33V
L7710 0v
L3095 11.6v
L7130 12.54
L7320 0V
L7310 0V
L7630 26mV
U1950 PIN 5 - 0.8mV - 0.9mV seems to change (pulse?) between these two measurements.
U1950 PIN 6- 0V, no pulse
Board DOES start in SMC Bypass Mode with high fan spin.
I'm really not sure what to do here. I'm still new to board level repair so I was hoping someone can look at this and help me figure out what is wrong. Thank you.
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