820-02536 20V 2A no boot

[ajdoc]

No liquid damage.
It charge battery without any issues.

CPU gets warm, no chime, Track Pad wont click. Cant enter DFU even with SOC_FORCE_DFU

Board only - CPU gets warm and 20V and 0.07A

Correct volatge on: PPBUS_AON, PP5V_S2, PP3V_S2, PP3V3_AON, PP1V8_AON


U8100:
- MPMU_BSTLQ_LX: 0.124 | 3.8V
- BUCK0_LX0: 0.012 | 0.05V
- BUCK0_LX1: 0.011 | 0.56V
- BUCK0_LX2: 0.011 | 0.56V
- BUCK0_LX3. 0.011 | 0.56V
- BUCK0_LX4: 0.011 | 0.56V
- BUCK1_LX0: 0.002 | 0V
- BUCK1_LX1: 0.002 | 0V
- BUCK1_LX2: 0.002 | 0V
- BUCK1_LX3: 0.002 | 0V
- BUCK1_LX4: 0.002 | 0V
- BUCK2_LX0: 0.010 | 0.7V
- BUCK2_LX1: 0.008 | 0.7V
- BUCK2_LX2: 0.010 | 0.7V
- BUCK2_LX3: 0.009 | 0.7V
- BUCK2_LX4: 0.009 | 0.7V
- BUCK3_LX: 0.230 | 1.8V
- BUCK4_LX0: 0.017 | 1V
- BUCK4_LX1: 0.019 | 1V
- BUCK4_LX2: 0.018 | 1V
- BUCK7_LX0: 0.191 | 1V
- BUCK7_LX1: 0.191 | 1V
- BUCK9_LX0: 0.181 | 0.84V
- BUCK9_LX1: 0.181 | 0.84V
- BUCK11_LX0: 0.114 | 0.95V
- BUCK11_LX1: 0.114 | 0.95V
- BUCK13_LX: 0.220 | 1.25V

Any idea?

 

[2informaticos]

"MPMU_BSTLQ_LX: 0.124 | 3.8V"
There must be 5V I think; replace L8430.
Just in case, check first PP5V_MPMU_BSTLQ; if is 5V, the coil is good.