Chosen Solution
Hello! So,I replaced the screen (LCD and glass) (tested before the assembly and it work ) and the charge flat, First time,before remounting all, I try to test the fix and the phone work all (screen,touch,charging port) except the touch button,so I’ve unplug and replug the charge flat connector to the motherboard and next the phone sems die,doesnt charge,no led,no screen,nothing :( I’ve checked all connector to motherboard and seems good, what’s happened? The only strange things I remember is a “low temperature” message when I test the phone the first time. I tried with another battery and doesn’t work don’t charge and don’t open :(
The S7 comes with a battery temp. sensor that if you don’t replace, it will not charge saying that the battery temperature is too low. You might have damaged this and maybe while testing you drained the battery and you are not able to charge again because of the low temp. The temp sensor is attached to the wireless charging coil (that thin black layer over the battery) check the connections between this and the phone.
