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SVT CL sounds like a fighter jet when power on

Im not sure if this is normal and it doesnt make a whole lot of different because you can't hear it when playing a show but when i power up my SVT CL it humms very loudly. Not from the speakers but from the actual head itself. Is this the fan or the tubes? Bias controles are solid green and its running through a power conditioner. (does the same thing when not running through the power conditioner)
 
Ok well ill take it in to get it looked at then. Ive still got some warranty on it i believe so i hope they cover fans and transformers if that what it is. I hope its not the transformer because the fan would be a quick fix.