Instrument cable got hung up and pulled the plug out of my G&L L2500 bass. Now bass has popping, cracking when I use it even with a new cable. Checked inside back cover did not find any loose wires, all solders look tite. Outside inspection of bass cannot find a cracked or loose input. Do I need to pull the input out of the bass to look for something cracked, loose or broken within the barrel, any solders in their? If I need a new input do I need one from G&L or can I pick one up at a GC or other local store?