No power 5V on Port A (I2C)

[MisteryX]

Hi everyone! I`m stu(a)ck in another problem with my Core2 ;). After C++ programming session with Wav file playing, I got disabled I2C Port A and my sensors did not work anymore in UI Flow 1.7.6/1.7.5. I measured voltage on 5V line and GND and found it is 0. Could anyone help me? Is it a programm controller issue and I can turn PortA on back or it is mulfunction of SY7088 or AXP192?