Chosen Solution
To preface, it is not the PS4, I have other controllers that connect, charge, and play just fine. This controller had been opened before (new thumbsticks and triggers) but after years of use it all of a sudden wouldn’t charge. I bought a new USB charging port socket board and 12pin flex cable (yes, it’s the same model) and replaced that. Still nothing. So I took a good charged battery from a different controller and put it in this one, it powers and plays fine but still won’t charge. The connection is there though with charging port socket board as the controller light works. So if it’s not the battery and it’s not the charging port.. what is the problem? Oh, and while it won’t charge, occasionally when I’ve tried to charge it I will get a “too many USB devices connected” prompt. And again, it’s just this controller. Others work fine..
It could be that the motherboard of the controller maybe failing. Commonly not charging is either due to busted USB port, dead battery, or a torn flex cable and since you have already replaced all of that then it maybe safe to say the issue is with the motherboard itself.
