hey ...ive had my vetta 2 for about 6 months now and never hada  problem with until today....i was at band practice and i used my vetta 2 head for about 3 hours....every time we take a break i turn off my amp and unplug my guitar so that i dont waste pickup batteries....but when i went to turn my amp back on afterwards...i saw a quick flash (kind of like when a light bulb burns out when u first turn it on)...then nothing.....no lights came on ....and after letting it sit to cool off for a bit i tried again a few times but when i flick on the power button nothing at all happens....ive tried different outlets so i know its not my power source...it has to be my head not working anymore....can anyone help me?   is my amp blown ?....can it be fixed by me or does it need to see a repair shop?  if so will it be expensive to fix?