820-00165-a green light no fan spin

Sr. Robot

Member
Hi, got an 820-00165-a with loads of corrosion, cleaned it and replaced U7200. Also, PPVIN_S0_CPUVR_VIN was blown and replaced with a jumper. Originally had no green light, now its stuck on orange light.

PPBUS_G3H: 8.55v
 

2informaticos

Administrator
Staff member
It MUST be steady 3.3V and only drops when trigger SMC_ONOFF_L.
Tell us the exact situatiuon on your board.
 

2informaticos

Administrator
Staff member
Then all S3/0 voltages should pulse too.
Check for pulse at ALL_SYS_PWRGD too.

Try starting in SMC bypass mode.
 

2informaticos

Administrator
Staff member
Inspect U1950 for corrosion.
Check for pulse at its pins 5, 6, 3.

The coils pulse every few seconds, or only two times?
 

Sr. Robot

Member
They only pulse once when i connect the charger, or when i push the power button.

U1950 looks great.

Only pin 5 pulses once when connecting charger
 
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