820-00165 Trackpad and keyboard not working

[No-Clean]

Board looks clean but had some work done before looks like, the trackpad and keyboard work sometimes, even multiple days at a time, but sometimes it doesn't, today it is not working mostly.

Tackpad, flex and keyboard are new, but I also tested with a different trackpad and cable and same probem.

U4810

1: 2.8V​

2: 3.2V​

3: 0V​

4: 0V​

5: 0V​

6: 0V​

7: 0V​

8: 2v

I replaced U4810 but same thing.​

​

 

[2informaticos]

"8: 2v"
Are you really sure???
Replace U8000, just in case.

"1: 2.8V
------------
5: 0V"
How is this possible???

 

[No-Clean]

The new U4810 I put was slightly moved and it was covering pin 5
Here are the new voltages

U4810 ​

1: 2.9V
2: 3.2V
3: 0V
4: 0V
5: 2.9V
6: 0V
7: 2.1V
8: 2.1V

And after replacing U8000

U4810
1: 3.3V
2: 3.2V
3: 0V
4: 0V
5: 3.3V
6: 0V
7: 3.3V
8: 3.3V

This MBA should be all good now!

Once again thanks!

 

[2informaticos]

You're welcome!