I have a brand new Warwick Corvette Proline, about 3 months old played maybe 10 times. I plugged it in to the Ampeg today and absolutely NO SOUND. It has a BRAND NEW 9V battery, and my other bass still works through the rig with the same cable. What is going on I am pissed and I want to JAM right now! I opened the back and it doesn't look like any wire connections are missing. This thing is brand new what is wrong?