Hey Guys- I was setting up the SVT stack for a bud to play at jam, and forgot the indicator light was supposed to turn green-and played with it red. After an hour or two amp shut down-no sound-red indicator light still lit. Manual says high power supply or tubes. I have 250$ in tubes coming-but wonder about power supply-the tubes light up when turned on-would they do that if there was no high voltage, or is the highvoltage on the output transformer side. Even though I have built a few kits- I likely will have this one to a tech-due to weight as much as anything.