Xperia Z2 vertical lines/screen turns white.

[RaidenMGR]

Hello.

After LCD replacement the screen has some vertical lines and turns into white (you can still see everything) but has more white into it, and if i lock the device and wait 3-4 seconds and open it again the vertical lines disappear and the screen looks normal for a few seconds, but after it goes back to the white/vertical lines.

Is this a flex cable issue or a motherboard issue, does someone knows?

Thank you.

[Lord_viridis]

Could be either/or.

I assume you did the repair yourself? If not, contact the repair centre that did it.

Although the signs posted indicate a loose or shorted flex, I wouldn't recommend fixing it yourself and would always advise you to contact your Local support.

[RaidenMGR]

Yes and when i test both the previous broken digitizer LCD and the new one, the vertical lines are there, so its not an LCD issue.

I just want to be sure if its the motherboard or flex cable, because before replacing it, there were no vertical lines at all.

Thanks for your answer.