This one was water damage, no magsafe light, with two shorts : first on PP3V42_G3H (U7941) and second one was an internal short on PPVIN_S5_HS_OTHER_ISNS.
Fixed these issues and we are back with green light but ppbus_g3h was 8.22V
Before messing with smc, I checked smc_reset_l and it was present at 3.4V.
I checked pp5v_s5_ldo and it was pulsing because 5V3V3_REG_EN was pulsing and SMC_PM_G2_EN was pulsing...
For ultimate testing I decided to cut the power (PPVIN_S5_5VS3 8.22v) to U7200 and at my big surprise SMC_PM_G2_EN 5V3V3_REG_EN were steady at 3.4V but PPBUS_G3H is still 8.22V.
So my partial conclusion is that U7200 will need to be replaced.
My question in the meantime is : does PP5V_S5_LDO missing causes also SMC to not fully turn on? I am still suspecting an smc issue...
thanks
Fixed these issues and we are back with green light but ppbus_g3h was 8.22V
Before messing with smc, I checked smc_reset_l and it was present at 3.4V.
I checked pp5v_s5_ldo and it was pulsing because 5V3V3_REG_EN was pulsing and SMC_PM_G2_EN was pulsing...
For ultimate testing I decided to cut the power (PPVIN_S5_5VS3 8.22v) to U7200 and at my big surprise SMC_PM_G2_EN 5V3V3_REG_EN were steady at 3.4V but PPBUS_G3H is still 8.22V.
So my partial conclusion is that U7200 will need to be replaced.
My question in the meantime is : does PP5V_S5_LDO missing causes also SMC to not fully turn on? I am still suspecting an smc issue...
thanks