820-00840 water damage dead.

2informaticos

Administrator
Staff member
If SMC receives high level on S5_PWRGD, it must send out 3V at PM_DSW_PWRGD.
If not, bad SMC, or PCH.
There could be bad solder under SMC too.
 
Last edited:

2informaticos

Administrator
Staff member
PCH will NOT start power on sequence until gets high level on PM_DSW_PWRGD.
If 3V3_S5 is present, SMC must receives S5_PWRGD and releases PM_DSW_PWRGD.
 

yair37

Member
UPDATE:
so i was get new U5000 now i have PM_DSW_PWRG 3.3v but still not turn on.
and no voltage on PM_SLP_S4_L AND ON L7670 also nothing with trigger
 
Top