I have a problem. Whether I use a headphone amp (VOX amphone) , my portable combo or the amp and cab rig, I am picking up tv or radio signals. It comes on when I strum it and it goes away when I mute it. What the heck is this occult noise? How can I get rid of it? I also get static noise on my Roland micro cube. When I run it though the battery it stops, but when I plug it in, as soon as I touch my strings, it starts to make crackling noise. This is really annoying. Is there a way to get rid of it? Thanks for all information and advice in advance.