The phone is a few years old and worked fine before.
Now the display is black and after rebooting the phone i dont see the logo.
The display does get slightly brighter whichi guess is the backlight turning on.
It also vibrates when i turn it on.
I tried booting it in safe mode but this didnt fix it.
I also removed the screen and inspected the connector with a microscope but there was no damage.
Is the screen just broken or is there more i could try?
Did you clean the connectors? For cleaning contacts use isopropyl alcohol (>90% or alcohol with a higher percentage. I bought 96% alcohol at Kruidvat) and a q-tip.
Did you make sure that the display is clicked into place all around?