Chosen Solution
I’ve replace the battery (new battery has 3.7V) and dock connector assembly, but with no luck. Iphone still not turn on, no battery sign when connected to charge adapter, and still not recognize by PC. All connectors seems attach to the board pins properly.
Rudita, here is a bit of an idea about the voltages on your motherboard. Let us know what you find.
I think your motherboard would have short circuited. Why don’t you check it using a multimeter?
