iPhone 11 turning off after screen replacement

I repaired an iPhone 11 it was a screen replacement and back glass replacement with the forward laser machine everything seemed to work fine but when the phone is on for a couple minutes the phone turns off and back on. After it randomly restarts it acts like normal until a couple minutes have passed it does it again. I’ve tried a different battery and even the original screen but it still does this. I’ve also disconnected the front speaker flex in case it was causing problems but it still does it. I put it into dfu mode and updated it successfully now its on a white screen that says attempting data recovery but it keeps turning off before it finishes any ideas on how to fix this power off problem.