01-28-2018 04:47 PM
I recently replaced the palmrest on my ThinkPad t520. Previously, I had replaced the palmrest and reused the old ribbon cables. Sadly, that didn't work.
So, I purchased a new palmrest on eBay that came with the trackpad and ribbon cables.
Here's a picture:
When I plug it into the computer I am unable to get the trackpad or the finger print sensor to work.
Furthermore, when I do plug it in it somehow disables the trackpoing on my brand new keyboard. I can still use a USB mouse, however. When I unplug the palmrest cable the trackpoint works as normal.
I've done a factory reset and I thought that would solve everything but unfortunately it hasn't. The BIOS says that the trackpad is "enabled" so I'm not sure what the problem is.
Thank you in advance for any and all suggestions.
01-29-2018 12:27 AM
I had the same issue with one of my T520's and one of my W510's, in both cases it was a defective trackpad causing it, I guess yours is also defective. Do you have a chance to test the palmrest in another T520 or W520?
Eventually try cleaning the trackpad motherboard connector using compressed air.
01-29-2018 01:03 AM
Unfortunatley I dont' have another T520 or W520. I do have an SL500 and X61s but those won't help.
It appears that the ribbon cable was not tightly secured in the motherboard connector. When I closed the plastic thing it doesn't really stay tight so I put some small pieces of plastic in there, rebooted and the trackpad now words!
I don't care about the fingerprint reader or the colour sensor (I don't think that works on the T520) but it's good to know that I figured this out.