I just bought this amp new from a store about 2 weeks ago. Everything was working fine until I started playing it at about 3/4's full volume/gain. I was playing it and it decided to cut out on me and the clipping led came on and it wouldn't play any notes, there was just a loud humming coming from it. I let it sit for 20 minutes turned it back on and it was fine. This happened again, I let it sit for about 10 minutes and then lightly tapped it on the top and it started working again. Now tonight the same thing but I cannot get it to work at all, it's been doing this for a good 2 hours. I would like to try to troubleshoot this/fix this problem myself because the shop where it is warranted has about a 2-3 weeks wait. Does anyone have any suggestions on what I should do? Also would be playing through a distortion pedal have anything to do with this preamp clipping?