v3x charge ok but no power on

[MTi-GsM]

this facking v3x charge ok but no power on
i change the key padflexbut and the connector of keypad but problem not sloved
please any one can help me to repair it:mad:
thnx in advance
regard

[c_ahmad79]

when you power on............. it show some thing on the screen..........?
like smart moto.................?

[drpavlov]

there si a silicium ic near the connector, replace it.