So my dog kicked/hit my amp when I was playing and knocked the cable around a bit, and the amp cut out all of the sudden. I've been trying to fix it ever since, and it only works when the cable is like half in. The second jack still works, but it sounds like ****.

Any idea how to fix/whats wrong?
Winner of the 2011 Virginia Guitar Festival

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The instrument cable is probably the culprit. Is it bent at all? If its not the cable just pull out the input jack and push in the pin that touches the end if the cable, chances are it got bent out a bit.