Had practice yesterday and my amp was making some crazy noises. At first thought it was the flourecent lights turned the light switch off back on amp sounds normal. Hour into practice it comes back put the amp in standy by turn lights off back on flip the standy switch poof one of my power tubes blew. Fuse is intact tried with another tube when I got home and checked the tube socket looks good bad tube has some black burned stuff on the back side of it. New tube lights up. Think all is good just replace the power tubes ?