Question G-Wii rev 2 sound issue

[Darkside19]

Hey community,
got a problem, maybe someone know it too. Got a G-Wii Rev 2 and I played with it and are very happy with it. But sometimes the volume go all the way to zero, like I would push and hold the Volume down button. Also the left speaker sound overdriven, the right one is completly fine. Any ideas? What should I look for, software,or hardware (U-Amp 2,left speaker,volume control buttons)?
Greetings

 

[CrazyGadget]

Post some pictures of all your wiring

 

[Darkside19]

allready fixed it :-) The Ground Pin from UAMP touched a pin of the button pcb (volume up Button)