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Mac Tech

Mac Tech

Member
Hello everyone.

I have this plate that turns on but when it turns off after a while, it no longer turns on.

I have to disconnect the battery and then it turns on.

PPBUS_G3H voltage is 12.10V with battery connected.

With the 87W cable connected, the PPBUS_G3H voltage goes up to 12.70V.

Disconnected from the current the machine turned on with the battery connected, the voltage is 12.10V
 
Mac Tech

Mac Tech

Member
resolved. Note that the machine when closing the screen did not return the image and turned off. Check lined SMC_LID 3.3V

resistors good.

Value in Diode pin 2 of the resistor 5252 value 2.293 abnormal.

Compared to another plate the value was 0.478

I had to make a jumper and the value returned to normal.

Now the machine turns on when lifting the screen.

THANK YOU!

Let it stay for future repairs.
 
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