I realized that 19v powered up the hx stomp by accident. As I was trying my different 9v power supplies thinking my hx stomp power supply no longer worked, I accidentally plugged in a 19v ( thinking it was a 9v) all of the sudden it powered up. It works without any issues, as to how long it will continue to stay that way will remain to be seen although i have been usingit this way for about 4 months now. Also, I only tried the other voltages to see if it worked at a lower voltage but it didn't. Anyhow, I appreciate everyone's taking the time to chime in on this. I think it's weird and I don't know how it got this way in the first place but somethings are too remain a mystery :)