T420 Trackpoint buttons problem

[scramble45]

I think I may have blown a fuse or something. I have tried the following to get my Trackpoint Buttons working:

All other keyboard functions work expect Trackpoint buttons.

• Reset bios

• Re-flashed bios 1.52

• Tried setting defaults in bios

• Tried reseating the flex cable

• Turned bios enable on and off on save for trackpoint

Based on the available t420 schematics is there a specific fuse number I could look at? I'm a little lost as to which pin goes to just those buttons.

[RealBlackStuff]

Fuses F13 and F21 (both type ERBSD1R00U) near KB connector.
What happens if you disconnect the trackpad?
Reinstall KB-driver and/or trackpad driver?

[scramble45]

Fuses F13 and F21 (both type ERBSD1R00U) near KB connector.
What happens if you disconnect the trackpad?
Reinstall KB-driver and/or trackpad driver?

Thanks for the reply, so If I am looking at this correctly those come off keyboard connector pins: 38 and 35, correct?

I havent tried just leaving the trackpad unplugged. Will try.
Yeah tried drivers but usually just run GNU/Linux

[RealBlackStuff]

Yup.
Don't know Linux options.

[scramble45]

checked both fuses and they seem to be good... maybe the keyboard itself... Got a whole parts laptop coming next...

[scramble45]

After all that, it came down to a bad keyboard. Just goes to show you that you should try the simple things first. Think you have a bad keyboard, buy a new one and try that first.

We can lock this thread. Thanks all.