#1
i've had my fender blues jr. (tube amp) for a few years now and it is starting to make popping and cracking noises even when there is no cable or guitar plugged in ..... do i just need to change the tubes or is something else wrong
#2
i have not had experience with this exact amp but i would recommend checkin the solder on the wire connected to the speaker...altho depending on how often u play tubes do usually fall out in the 1-2year range, if im not mistaken