820-3023 keyboard not working.

Aivaras

Member
Hello,I have old 2011 820-3023 motherbaord that keyboard isn' working. Trackpad works fine. Good known keyboard,cable and trackpad.
j5700 voltages when cable is connected.
1. 3.308v
2. 3.277
3. 0v
4. 0v
5. 3.089v
6. 0v
7. 0v
8. 3.309 - drops to 3.23v and then jumps 3.3v
9. 3.308 - drops to 3.23v and then jumps 3.3v
10. 5.1
11. 3.402
12.3.369
13. 3.405
14. 3.404
Is voltage drops on pin 8 and 9 is normal?
 

2informaticos

Administrator
Staff member
If TP works, only kB not, then the problem is between KB and TP board.
KB is connected with TP board directly, not with the MLB.
So try another KB and/or TP board...
 
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