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MACBOOK A1990 820-01814

S

sourcensolutionsonline@gm

Member
This macbook Came in , customer stated that Juice spilled on it , I opened and cleaned the board, founds some spots with minor stains and some not fully damaged caps , 20V from USBC meter is present But no fan spins and no boot , please help.
 
2informaticos

2informaticos

Administrator
Staff member
T2 gets all expected SLPS2R and AWAKE voltages?
Is the machine recognized into DFU?

Check diode mode to ground on all big coils; don't forget L9080.
 
S

sourcensolutionsonline@gm

Member
Here s what i found out ,

Diode mode reading

L9080/81= 0.346

L9020/21 = 0.106
L9030 = 0.321

LB700 = 0.172
L7660 = 0.378
LA350= 0.008

LA300= 0.120
LA640 = 0.000
LA650= 0.000
LA340 = 0.000

L7330 = 0.011
L7231 =0.001
L7221 = 0.001
L7211 = 0.001
L7420 =0.003

L7410 = 0.003
L7030 = 0.455

L7701=0.065

L8410 = 0.761

L8110 = 0.040

L3500 = 0.460



SLPS2R And AWAKE Voltages

PP1V8_SLPS2R = 1.8V

PP1V1_SLPS2R = 1.1V

PP1V8+SLPS2R _PMU VCC GPIO + ?

PP1V8_SLPS2RSW_DFR= 1.8V

P1V8SLP2R _SW0 = 1.8V

PP1V1_SLPS2R _SW0= 0.898V
SW1=1.1V
_FB = 1.1V

PP0V8_SLPSR = 0.8 V
PP3V3 AWAKE =3.3V
PP1V8_AWAKE = 1.8V

PP1V8_AWAKE_SOC _TSADC_RC = 1.8V
PP1V8_AWAKE_SOC _FMON_RC = 1.8V
PP1V2_AWAKE = 1.2V
PP1V2_AWAKE_SOC_PLLSOC_F = 1.2V
PCIEREFBUF_F = 1.2V
PCIELL_F -= 1.2V

PPVDDCPU_AWAKE = 0.529V

PPVDDSRAM AWALE = 0.8V

PPVDDCPUAWAKE_FB_F = 0.529V
PPVDDCPUAWAKE_SW0 = 0.529V
- SW1 = 0.529V
SW2 = 0.529V

SOC_BLUE_AWAKE = 0.050V
 
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