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> Put back all things and change Q8400. Change Q8400 to new part ?

Not really. I am suspecting weird behaviour from Q8400 now. Since some time ( as mentioned before ) it had 12V on both 3,4 pins. I suspected some short before and removed it but then when soldered back all of the surrounding components it was the same. I am looking at the schematics and trying...

Ok, found it, there was a short at probe point near R8401[2] since there was some solder blob on it

Something is giving 12V on pin 3 in Q8400, and I am assuming there should not be 12V. I removed the R8402 just to make sure it's not complicating this. Do you know what should be my readings on R8401 or C8400 on ( pins 2 ) since they are connected to pin 3 of Q8400. I am guessing they should not...

I used 62K on R8402 I did not remove power when using diod mode Will check connections again soon

0.59 on BKLT_SD

ok, on diode mode it is 0 on pins 3 and 4 and on the rest pins there is 0.82

BKLT_SD at about 1 - 2 V Diod mode doesn't work for me, will have to check why, maybe doing something wrong. Voltage on Q8400 13V - 3,4 pins rest pins have about 0.002

C8442 is actually missing from the board, I can see it in the schematics but not on the board. Looks like an important component

what should be the voltage in there ?

hm, 0.012 now on pin 1

voltage

D8410 0.0053V on pin 1 0.0005 on pin 2

I actually managed to solder it somehow. Now the R8402 is back in the circut.

true, I am able to get to that pin with some tool improv. What worries me is that the broken pad seems to be going trough the board on to the other side, is that correct ? Seems like almost impossible to solder to whatever is left in there

>Be sure to make good contact with pin 11/U8400. How do I check that ? There seem to be no probe points for this pin and it's under the chip.

0.008 so I think it's not there? Keep in mind I still have not soldered the R8402 so it's missing from the board. I also might have damaged the pad from under R8402 ( pin 2 ) - is it enough to run a wire from the probe which is just near it ?

wow, it actually just missing backlight now ... it's booting and shows login screen just missing backlight

Ok, actually things got a bit better since I last had it put together. CapsLock reacts, there is a charging sound as well.

I will connect to top case and check again. Just need to figure out which connector is for keyboard.