I didnt play my 5150 II for a few days and when i turned it on today the clean channel was verry distorded and had NO low end, and my distortion channel han absolutely NO low end and theres a ton of feed back (and i use 2 noise suppressors). All the EQ's and rack gear has the same settings so none of that has changed, the speakers in my cab seem fine and all the tubes in the back of my amp are glowing so i dont know what could be wrong. SOMEONE PLEASE HELP!!