iPad 4 Shuts Off and Boot loops after unlocking

I have an iPad 4 wifi that was given to me with a broken screen and is shutting off and boot looping after pressing the home button to wake or unlocking with passcode. I replaced the digitizer successfully and have tested it for the few seconds to sometimes 1 minute that it stays on. I did not adhere it to the case yet as I’m thinking I’ll need to do something else in there to get it working. the Basic troubleshooting was done, such as a hard reset. iTunes restore was completed successfully but did not correct the problem. It stayed on for about 10 minutes after the restore but then went back to shutting off. The device will turn on and as soon as the home button is pressed, or the passcode is entered, it usually shuts off and starts boot looping until it turns back on again. If I don’t touch it, it will stay on and eventually the screen will sleep. If I wake it with any input, it shuts off. Battery says 100% charge. Any suggestions on what to try next?