Chosen Solution
I have bought this cheap iPad 4 use as a home automation center, mounted on the wall. The description stated it had a few defects, which I thought I could get over. Upon closer inspection some more things are wrong with it: Touch screen was flakey (ribbon cable was sheared)Sleep by pressing the power button is not working, not even from assistive touch. Hold to power down ís workingScreen rotation: not working, does work from assistive touch. Screen lock switch is working, so are the volume buttonsHeadphone jack: only some loud pops and light noiseMicrophone: no input (Siri cannot hear me)Cameras: both front and back camera show only blackApps from the app store cannot be installed: after pressing “Install”, spinner keeps on spinning without any popupApps cannot be deleted: long press does bring up wobbly icons and the ‘X’, but pressing the X does nothingAfter the first boot, the screen stays black. You can tell it is on because when initiating Siri (home long-press) or taking a screenshot, you can hear the corresponding sounds. After a reset (home + power long press), you can get to the home screen by pressing the home button (the home screen does not show itself automatically) I already replace the touch screen (working OK now), home button and WiFi cable. I can see no damage to the logic board, and judging by the screws, it has not been removed. I was thinking about replacing the headphone jack assembly, since this connects all the components which are (partly) failing: iPad 3/4 Wi-Fi Headphone Jack The hardware issues seem logically connected to this part, but I have no clue about the seemingly software-related issues. Any ideas that replacing this part will fix my hardware and/or software issues? Thanks for any input. Edit: FIXED Everything is fixed after I replaced the headphone jack assembly! As you can see below, this part was torn by the previous owner. Thanks for the hints.
Ok seems like you’ve done a lot, what is the most current status of the iPad after you’ve replaced all those parts? Also what parts are still not working? For the software issues, you should fix the hardware issues first then work on the software issues after.
@touretteskey Thanks, everything is as stated in the problem list, except the touch screen which is working allright now. I’m primarily not sure if I should be looking at the flex assemblies or the board (if that latter, I’ll ditch the thing).
