Chosen Solution

Hello people, i really need your help. You guys seem to be great at giving good answers that help hence why I’m here. I have an iPad 8th gen. It had a smashed screen of which I replaced. I did lose touch id, but other than that, all went well. Later that night, it started doing its own thing, including zooming in. I tried everything I could think of and have made a few discoveries.

  1. It happens even when the digitizer and home button are disconnected. Suggesting, it isn’t related to the new digitzer.
  2. There is a buzzing noise coming from the top end of the iPad, I believe the battery connector.
  3. It doesn’t want to turn off. I can’t swipe it off as it is going crazy.
  4. Forcing it to turn off doesn’t work, it turns itself back on shortly after. Please can someone advise my next steps. I’m really stuck and don’t want to have to throw away such a good iPad. Thanks people Update (05/18/2022)

— the buzzing appears to be coming from battery connector

Buzzing suggests that something may be shorting. Start by checking all the ribbon cables are properly seated and connected. The battery connects to the logic board on the bottom right side of the device but the camera module is located at the top. I think you have a current running through the frame and its setting off the digitiser or a current is running through the digitiser and into the frame. Disconnect the screen and connect the battery. If there’s no buzzing and it won’t auto power on, connect the screen. Same thing, no buzzing, no power on, connect the digitiser. This might allow you to isolate it to the frame, the screen, or the digitiser.