Is my smc bad?

I have a macbook I got for free that doesn’t get a green light this is my first attempt at laptop repair, so I checked a few voltages:

PP3V42 - OK

PPBUS_G3H - 0.03V NOT OK !

So I checked to see if the onewire circuit was working, 0V on SYS_ONEWIRE, and I think the PPBUS is not being created because SMC_BC_ACOK is at 0V, so I checked to see if the SMC was being told to turn on, SMC_RESET_L was at 3.3V and PP3V3_S5_SMC_VDDA PP1V2_S5_SMC_VDDC were present, but SYS_ONEWIRE and SMC_BC_ACOK are not coming out of the SMC. Can anyone confirm my smc is bad or has an idea on what else it could be ?

I can also add that the only places I was corrosion were on the dc in board that I think still works fine, and the SMC had gunk around it, but nothing green or blue and it was small.