Hi, I'm a new guitarist and today I bought my first amp. It's a Gorilla TC 110. When I used it in the store everything was fine and it sounded great, though when I got it home it began not to work properly and only produced sound when I pushed the cable in the back right in. After a while even this stopped producing much sound at all. If anyone knows any solutions or whether I should do it myself or get it looked at I would be very appreciative, thanks.