820-01814 20V 0.08A

ajdoc

Member
Cant find any liquid - all in great condition.
On charger 20V 0.08A (genuine 96W charger)
PPBUS_G3H 12.62V
PPBUS_HS_CPU 12.60V
PPBUS_HS_GPU 12.60V
PPBUS_HS_OTH5V 12.60V
PPBUS_HS_3V3G3H_T 12.30V
PPBUS_HS_3V3G3HRTC_X - 12.60V

PP1V8_G3S 1.78V
PP5V_G3S 5.12V
PP3V3_G3H 3.34V

PPVCC_S0_CPU 0.0V

Big coils around CPU/GPU got 0.0V and 0.001V in diode mode.
Started to lift coils for example lifted L7211/2 and on pad 1 got 0.135V in diode mode, pad 2 got 0.001V in diode mode.

Did the same thing with L7221 and L7231 and still got 0.001V on PPVCC_CPU_PH1/2/3

Is the CPU dead?
 

2informaticos

Administrator
Staff member
Switch to ohm scale for very low resistance values.
Compare readings with good board.
Logi.wiki has many readings for several boards, check the web if necessary.
 
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