820-01958 lid sensor issue?

ajdoc

Member
MacBook had liquid damage.
Audio board was damaged as well.
I manage to turn it on but got some lid/sleep issue.

When plug charger it turns on.
When I almost close the lid I see display turns off (so lid sensors works?) but when I open the lid it think lid is still closed (no caps lock LED, blank display etc).
When press and hold power button it shut down so power button is working fine.

I replaced twice Audio board with flex and speaker, tried with another power button as well.
I know there is another lid sensor on mic flex (mic in system works fine) and is connected to J6750.

SMC_LID_LEFT and SMC_LID_RIGHT got correct diode mode values.

It wont turn on when press power button, turns on when connect charger.

J6750 was affected by liquid as well (mic flex has been replaced).
J6750/3 (flex not connected) got only 0.011 in diode mode but when system is turned on got correct voltage 1.8V

Replaced U4802 just in case and no luck.

Dont have another A2179 to fit the board and test.

Any idea?
 
Last edited:

2informaticos

Administrator
Staff member
"SMC_LID_LEFT and SMC_LID_RIGHT got correct diode mode values"
What about voltage level?
Check with lid open/close.
 
Last edited:

ajdoc

Member
Lid close:
SMC_LID_LEFT 0.0V
SMC_LID_RIGHT 0.0V

Lid open:
SMC_LID_LEFT 1.8V
SMC_LID_RIGHT 0.0V

Board only:
SMC_LID_LEFT 1.58V
SMC_LID_RIGHT 0.0V

SMC_LID_RIGHT got 0.565 in diode mode.

R4801 and R4805 got the same resistance like on another board

Voltage:
R4801/1 1.80V
R4801/2 0.01V
 
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