screen issues after replace

Hi,

I repair phones. Oneplus most of all.

I changed a LOT of oneplus One screens. But almost always I have this problem.

With the new screen, sometimes it won't turn ON the screen after sleep or press power button. I hear that the phone is ON, but the screen is black.

I have to change random screen settings (double tap to turn on, or off, etc) until it works ok again. When it stays black, I have to reset the phone to get the screen on again.

Anyone else with this problem?