Backlight working but no display on Honor 9 Lite

I decided to fix my Honor 9 Lite’s LCD which was working but had broken glass. I often fix LCDs without problems for my relatives and friends but this time I’ve had an issue. When I power on the phone I can feel the vibration, backlight turns on but there is no image on the display. I tried with two new displays and even with the old display, which doesn’t work anymore.

I’d like to know if there is any possibility to recover data from the phone :-(