Wiko water damaged now only backlight

I've received a water damaged wiko fever, I've received the phone only minutes after it being submerged so i opened it up and placed the logic board into isoprophyl alcohol.

The phone works now but the power button is dead, shorting the switch does the trick to power it on. But when it's on i only get backlight but no display whatsoever.

The screen is attached to the frame so i couldn't remove that to get the water out.

Does anybody have any idea if this is a logic board fault or that the screen was damaged?

thanks!