Amil Gacevic

Hey guys, i got a 09 S65. Has anyone had any problems with the sound amp. Mine shutd off when ever it feels like it, and wants to work when it feels like it, haha.. i took it to mb and they told me i need a new sound amp. I was playing with the javks and the wires in the trunk and i noticed as i push around the main power jack, the amp starts to work, then ill move it and the amp will shutdown. Its so weird. Im not getting any sound or anything. Anyone had anything similar to this happen to them ? Thankss