know this has probably been posted and asked about 20 million times, but i couldnt find anything with search so please help someone who knows nothing about equipment! basically i have a behringer ultrabass bx1200 and its buzzing. that noise that you know is trouble as soon as you hear it. its fine when its on low volume, but the louder you turn the volume up the louder it gets. i know this is probably something like somethings blown etc but i just don't know, so is this a case of its f*cked, needs sent off, or get the screw driver out? any info would be greatly appreciated!!!