Touchscreen problem - hardware or software related?

[chkenwing]

My Nexus 2013 has been experiencing erratic touchscreen behaviour lately.

Here's some videos to indicate what I mean:

Video 1
Video 2

It was running lollipop, which I then upgraded to Marshmallow thinking that would alleviate the problems.
I also cleared the cache and factory restored - no improvement.
I've tried sfhub's touchscreen fixes - also no improvement.
I've also opened it up and tried the ribbon cable fix - no improvement.

The screen only really recognises touches on a small vertical band on the right of the screen. At one point, it only registered touches within the dead zones if I had two fingers on the screen, but then further tests revealed that that was a fluke and then it went back to being erratic.

I was wondering if anyone else had this problem? If so, have you managed to fix it?

Is this more likely a hardware or a software problem?

Any help would be appreciated!

Thanks

 

[ethanchow]

I would try cutting power to the tablet and cleaning the digitizer connections with alcohol. Then try parrot mod as well

 

[blueberry.sky]

The screen only really recognises touches on a small vertical band on the right of the screen.

This sounds like a hardware issue. But still, certainly worth trying the parrotmod fix. As ethanchow suggested try cleaning the ribbon cable contacts. 91% isopropyl alcohol (and of course give it a second to be sure it's fully dry).

I'm assuming it's an original screen.