Chosen Solution
I bought a broken controller hoping i could fix it. It shows no sign of life at all. I tried different USB cables: Nothing The USB port is working, i checked it on another controller In another thread someone had a tiny stain with caused the problem so i cleaned the whole board with cleaning alcohol and a brush: still nothing Battery also not the problem since the controllers also turns on without battery. The problem has to be somewhere on the board and i cant see anything wrong with it.
Seeing as a new Motherboard is like $20, id just order a new one. it isn’t worth the time to try to diagnose the no power fault on the board. DualShock 4 Controller Motherboard and Midframe Assembly (JDM-001)
