Chosen Solution
Short story: Phone came in contact with some ice tea, screen is working, touchscreen and fingerprint not. I already tried the standard stuff + replaced the display, but nothing has changed. My idea: The cable that connects display, mb and usb took some damage. Could that be the reason?
@milfie sounds to me like the ice tea encounter may actually have shortened things out. Just use the Samsung flowcharts to at least narrow it down
To find the components you need to check, use this document Schematic and your PDF reader search function
