macbook air 820-00165-a water damage not powering

[LaptopRepair]

I got a dead macbook air 820-00165-a because of a water damage. The customer told me that after he putting it for a while on the rice, he has started it to take a important file from it, then he brought it to me.
By trying to dry it he lifted most of the kies of the keyboard. He told me that it was still working.

After checking it by the microscope, I ve found nothing strange on the board, no corrosion or calcination of componant. Just some water traces I ve cleaned with the alcohol and tooth brush.

I tried to boot it by pressing the PB, but nothing is happening. I ve no schematics of this model, but I could read a 3V3 on one of the coils.

Please any idea.

 

[smiba]

Light on the charger? Does it boot up when plugging in the charger with the keyboard and battery disconnected?

Get schematics first, then we'll try to help.

 

[LaptopRepair]

smiba. It boots up when plugging in the charger without keyboard and battery connected. I ve found the schematics but the BV is only from another A1466 model boards available like 820-3209-a.

 

[dukefawks]

So the board works without KB? Probably bad trackpad flex and/or keyboard.

 

[LaptopRepair]

dukefawks I ve got the BV too, how to check that the keyboard is defective?

 

[larossmann]

dukefawks I ve got the BV too, how to check that the keyboard is defective?

Try a working one.

 

[dukefawks]

Just disconnect keyboard from trackpad and connect a working one there for test...