Model :Lenovo G50-80
M/b: NM-A361 Rev 1.0
Problem: Can turn on with power switch but turns off within 4-5 seconds, No display.
Observation:
1. No liquid spill or corrosion observed.
2. 3v/5v alw present.
3. All voltge rail rises for 3-4 seconds when turned on ,then laptop turns off.
4. NO coil is shorted to Ground.
I have replaced PU1207(TPS51716),still same.
I have flashed both EC & Main with various dumps,still same.
Following signals are present:
SYS_POWEROK
SUS_VCCP
PBTN_OUT#
PM_SLP_SUS#
pch_PRW_EN
PCH_PWROK
LID_SW
PM_SLP_S3#
PM_SLP_S4#
MAINON Signal is missing at pin 79 of IT8586E.
Any ideas friends
M/b: NM-A361 Rev 1.0
Problem: Can turn on with power switch but turns off within 4-5 seconds, No display.
Observation:
1. No liquid spill or corrosion observed.
2. 3v/5v alw present.
3. All voltge rail rises for 3-4 seconds when turned on ,then laptop turns off.
4. NO coil is shorted to Ground.
I have replaced PU1207(TPS51716),still same.
I have flashed both EC & Main with various dumps,still same.
Following signals are present:
SYS_POWEROK
SUS_VCCP
PBTN_OUT#
PM_SLP_SUS#
pch_PRW_EN
PCH_PWROK
LID_SW
PM_SLP_S3#
PM_SLP_S4#
MAINON Signal is missing at pin 79 of IT8586E.
Any ideas friends
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