Chosen Solution
Alright, seeing as how I am always answering questions here, I thought I’d reverse the roles here for a bit of fun. I have an iPhone 5S that has been working great for years. I changed the battery a year or so ago but otherwise the phone is pretty much original. I swear to (insert your deity here), the phone was just on my desk, doing nothing other than being on the table (kinda like the nightstand thing :>) and it suddenly shut off and started boot looping. It’s been dropped here or there over time but nothing major recently and there has been no contact with water. Connecting it to iTunes gives me an Error 50 and it is very warm. I haven’t opened it yet but I thought I would solicit some ideas and we’ll see who comes closest to the solution (@mayer, @oldturkey03, @rany, @benjamen50, @arbaman, @teetopp @thinksmartpc, @juax, @joesipaq, @tech_ni and anyone else…) P.S. Yes, I have a backup :>)! UPDATE (2018/06/29) This is weird…I thought I would give it one last chance today before opening it up. I powered up the phone and it booted. iTunes would recognize it but it would not complete a backup, saying the iphone wasn’t connected !?! I restarted iTunes and then everything worked properly. I used my phone all day without issue. Very strange indeed. Thanks for everyone’s suggestions…I was hoping we could collaboratively have fun diagnosing this phone. Hopefully it will die again soon :>).
Alright guys, now we can’t just “assume” it’s something without a test. I would strongly encourage to take the unit to a board specialist to test the board to determine which component may be compromised, or having an minor breakdown. Update* (because apparently I was AFK for too long) It’s awesome your device is working again! To prevent losing data, I would strongly encourage to keep a back up of device, especially if you have some important data in it. Make sure to keep your back up active on Icloud and/or set up your main PC to auto sync over the wi-fi. Here is an article forSync over Wifi
Excuse the fact that my answer may already be listed here, I didnt read all the answers, but watching a few episodes of iPad Rehab on Youtube and the tri star going bad seems to cause a lot of funky power issues. I have two iPhone 5’s that had similar issues before going completely out. I swapped batteries and charge ports multiple times. I would assume it’s the tri star chip, however I have no micro soldering experience.
Connect it to your computer with the latest version of Itunes, then hold down the power and home button down for 10 secs. Then release the power button while holding home and it should show a screen on Itunes
