hello friends,
I have hp g62 Wont turn on.
Some corrosion around PU850 (SN0608098RHBT)
+V3.3AL OK
+V5A is 0 volt.
I've replaced PQ850 and PU850, no change.
There is no short to ground on the +5VA rail.
Measurements I've taken:
PU850 pins:
Pin 26 (DRVH2 +V3.3AL_UG_20) = 3.5V
Pin 25 (LL2 +3_3V_AL_PHASE_20) = 3.3V
Pin 24 (VBST2 +3_3V_AL_VBST_20) = 8.4V
Pin 23 (DRVL2 +V3.3AL_LG_20) = 0.9V
Pin 15 (DRVH1 DHI) = 0V
Pin 16 (LL1 +V5A_PHASE_20) = 0V
Pin 17 (VBST1 +5VA_VBST_20) = 4.8V
Pin 18 (DRVL1 +V5A_LG_20) = 0V
EC_ALW_EN missing
IT8502 vcc= 0v
+V3.3S=0v
can any one help me urgently
I have hp g62 Wont turn on.
Some corrosion around PU850 (SN0608098RHBT)
+V3.3AL OK
+V5A is 0 volt.
I've replaced PQ850 and PU850, no change.
There is no short to ground on the +5VA rail.
Measurements I've taken:
PU850 pins:
Pin 26 (DRVH2 +V3.3AL_UG_20) = 3.5V
Pin 25 (LL2 +3_3V_AL_PHASE_20) = 3.3V
Pin 24 (VBST2 +3_3V_AL_VBST_20) = 8.4V
Pin 23 (DRVL2 +V3.3AL_LG_20) = 0.9V
Pin 15 (DRVH1 DHI) = 0V
Pin 16 (LL1 +V5A_PHASE_20) = 0V
Pin 17 (VBST1 +5VA_VBST_20) = 4.8V
Pin 18 (DRVL1 +V5A_LG_20) = 0V
EC_ALW_EN missing
IT8502 vcc= 0v
+V3.3S=0v
can any one help me urgently
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