Howdy guys and gals. For a week now, I have been awaiting reply from the manufacturer of my combo amp, and since I am quite impatient by nature (and quite lost when it comes to tech issues of this kind), I thought maybe the fellow TalkBassers could help me somewhat. You see, my combo is not functioning properly. It is not all dead, but not far from. The problems have evolved during rehearsal, that the sound would come on and off seemingly when it wanted to... at first, it was just occasionally and I blamed the old cord I have and used another (a new one), but the problem wouldn't go away. Instead it went out more and more often, and suddenly I couldn't get it to sound. At least not much. Details: * The input jack. All of a sudden, I am not able to insert the cord into the jack. To be able to do so, I have to loosen the screw nut around it. What's with that? * When I try to get it to sound, all that comes out from the speakers is a very weak, distorted signal. I just wonder what might be going on. Possible causes would be: * Power amp blown - I sure as heck wouldn't want this... and I can still use the output volume control, so that couldn't be it, right? Then it wouldn't sound at all, or...? Oh lord, I fear the worst... * Some kind of wiring damage between the power amp and the speakers (this would be an easy fix, I guess). * Not enough contact in the input jack, so just fixing the input would clear all my problems. Any thoughts on this? I would like to be able to have a diagnose before I go to a store to have them repair it - would save them time and me money... Sorry if I'm being too long-winded.