After lurking here for a long time I've finally joined this forum hoping someone can help me troubleshoot this. I have a Hagstrom Beluga IIF that sounds very distorted even with the preamp switch off and no battery inside. I took the bass to my local Hagtrom dealer but they cant figure out whats wrong. U.S. Music doesnt know whats wrong with it and since I bought it used they wont fix it even if I pay them. The store's repair guy think we should replace the preamp. Any thoughts on this?