Ok well I have a Epiphone SG Standard S.O.R and just a little 15 watt fender amp and a line 6 half cab. My epiphone doesnt work on either one. and i took my amp (small one) and my guitar up to the guitar center and my guitar work fine and so did my amp so i got new cords thinking it was that. Well now the guitar just doesnt work and i have a fender strat and my amp works on that so its gotta be my guitar. but it worked at the guitar center. i dont get it.