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820-3476 turns off after 8 second

Repairable

Repairable

Active member
Hi all,

interesting one here,
board looks perfect, no liqued damage and seems the board has never been removed.

green/orange light
ppbus_g3h 12.61V stable
after you plug in charger
fan spin, image on screen, backlight turns on.
i can even sometimes do a ASD test. (wont finish) turns off premature.

after it turns off i get
PP5V_S0 0.0000volt.
but at c8310 i get 0.054volt

oke over to face detection.

nothing.........
 
Last edited:
Repairable

Repairable

Active member
Same issue keyboard removed.
Did not observe shutting down wil do that
did check iT after iT was turned down and iT was stil 3.3
 
Last edited:
Repairable

Repairable

Active member
with keyboard, (rest is unpluged)

SMC_ONOFF_L 3.422 volt stable wont go off when machine turns off.
however i pluged in the mouse and when the machine turns off the mouse light also turns off and when pluging in again no mouse light..


no keyboard (SAME RESULT)

SMC_ONOFF_L 3.422 volt stable wont go off when machine turns off.
however i pluged in the mouse and when the machine turns off the mouse light also turns off and when pluging in again no mouse light..
 
D

dukefawks

Administrator
Could be anything. Inspect closely for liquid damage. There is really no way that is worthwhile to figure out the shut down cause if there is no liquid or some history that would point to something.
 
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