Chosen Solution
I have to mention that my iPhone doesn t recognize the original cable, works only with a different cable. I m sure the dock is not damaged because i tried with another 5s motherboard on it and it s working fine. And the battery drains fast, the motherboard is overheating even when in normal use and in idle is still warmer than normal.
That means something is shorting on the board. Usually only happens after liquid damage or bad replacement parts (usually the small ones like front camera, rear camera) short circuiting the board causing rapid battery drain and making the board heat up a lot. Hopefully it isn’t a U2 Tristar Charging IC issue or Power Management Chip IC. It’s most likely one of them. U2 more likely as it did not recognise the original cable. More info here: https://www.youtube.com/watch?v=0v-wKlVh…
