HP27: lowest keyboard horizontal row not working

[teenix]

(05-28-2019 01:54 PM)isanchez Wrote:  thanks!

Check done! I have checked the continuity of the keys (pressed) and the upper contacts (9), not the bottom.

considering the upper contacts (C) from left to right, from 1 to 9
Considering the keys rows (R) form upper to bottom, from 1 to 7
R1-C5
R2-C7
R3-C8
R4-C6
R5-C4
R6-C3
R7 (problematic row)-No contact (should be the C2, I suppose)

Is there any feasible repair?
Thanks
Regards

I would look closely at the key circuit board and check for corrosion - aqua green powdery looking stuff on the circuit board tracks. It's possible that a track has been eaten away. Possibly hard to find, but also look for cracks, especially around the pin areas that connect to the cpu board.

If this fails, you may need to open the keyboard which I believe is difficult to re-assemble. There are old posts available that describe this in more detail.

cheers

Tony