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820-4924 liquid damage, light on charger, trackpad clicks, no chime

A

ajdoc

Member
Liquid damage.
Burned our keyboard backlight connector, U8330 with burned out paths around (dont care about keyboard backlight).

LCD connector burned out as well.


Got light on charger, no chime, USB light is ON, caps lock LED don’t react, blank screen (on ext display no image as well).

PPBUS_G3H - 12.57V
PPBUS_S5_HS_COMPUTING - 12.58V
PPBUS_S5_HS_OTHER5V - 12.58V
PPBUS_S5_HS_OTHER3V3 - 12.58V
PPVIN_S4_TPAD -
PP3V42_G3H - 3.43V
PPVRTC_G3H - 3.32V
PP5V_S5 - 5.01V
PP5V_S4 - 0V

PP3V3_S5 - 3.32V
PP3V3_S4 - 0V

And I am lost as PM_SLP_S5_L etc is a nightmare for me.

Any help?
 
2informaticos

2informaticos

Administrator
Staff member
Do you get PM_SLP_SUS_L and 3V3_SUS?
What about PM_DSW_PWRGD, PCH_DSWVRMEN, PM_BATLOW_L, PM_PWRBTN_L and PM_RSMRST_L?
 
A

ajdoc

Member
PM_SLP_SUS_L - 3.32V
3V3_SUS - 3.32V

PM_DSW_PWRGD - 3.43V
PCH_DSWVRMEN - 3.12V
PM_BATLOW_L - 0.035V
PM_PWRBTN_L - 3.42V
PM_RSMRST_L - 3.17V
 
2informaticos

2informaticos

Administrator
Staff member
"PM_BATLOW_L - 0.035V"
PCH cannot start power on sequence then.
Be sure to use original 60/85W Magsafe 2 charger.
 
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