Chosen Solution
Hello everyone! I replaced the screen and case of my iphone 5s, and now it won’t boot anymore! When I connect my phone to the power, it turns on, shows the apple logo for a brief moment, and then turns black until I disconnect and reconnect the power again. When I connect it to the PC, iTunes detects the phone, and wants to to a recovery, but fails when trying to reset it to factory settings, or load a backup. What defect can cause such a reaction? I read that it can be caused by a faulty battery, so I replaced that as well, but it still wont boot. I hope it is not a faulty U2 IC, because I don’t have the skill and equipment for micro soldering. Another info: My Home button is broken, so I cannot perform any operations that require that button :( I thank everyone already for their help! Edit: I just saw that it actually restarts, after some time, and displays the logo for not even half a second again.
When doing a full housing transfer, a lot of things can go wrong…plus you added a few variables by putting in a new screen and new battery. Did I mention that there are lots of poor quality replacement parts and batteries on the aftermarket (especially eBay)? You will need to eliminate as many variables as possible and then add them one at a time. Always disconnect the battery first and connect it last at every step. Start by connecting just the Dock Flex and battery (preferably the original as you know it worked before) to the board…nothing else! Now connect it to an iTunes enabled computer (again, preferably with an Apple Original Lightning cable) and see if the phone is recognized by iTunes. If it is, add one flex at at time (except the Digitizer/LCD combo) to see what causes the issue. If the phone is not recognized, you either have a damaged Dock flex or damaged Logic board. If you want to continue to attempt to troubleshoot, you will need to start buying replacement parts, such as a Dock and whatever else you determine to be potentially faulty. At some point, it may be easier to have a repair shop do the troubleshooting. If it starts to look like a logic board issue, then seek out a reputable micro-solderer.
