Need help determining if the screen or motherboard is the problem
So my friend purchased a pixel 5a for parts on ebay. Screen looked good, No cracks or OLED broken. He sent me his phone to fix and it arrived and I did the swap of the screen. Sadly the screen does not light up but I can hear the phone do things. I am wondering if the screen is at fault or if I possibly damaged the Motherboard since I was unable to power off the device cause the original screen did not work. Any thoughts?