Last night i finally got to play my Mk V with my drummer and dam does it sound amazing loud :lol: . However while we where breaking down i was still playing and he stepped behind my amp and what i believe he did was step on the power cable which then made the amp restart ? From that point on i heard a crackling sound i looked up saw that my amp just restarted and then quickly turned it off. i waited a bit then turned it on again to make sure it still worked but none of the tubes where lighting up... so i turned it off again waited a bit and then turned it back on this time all the tubes lit up except the one farthest to the left which was not glowing/barely glowing at all. Do i have just a fried tube or is my head damaged. Since i am new to tube heads i am hesitant about turning it back on should i not turn it on or what would your personal opinions be?