I have a 6505+ Combo and all the tubes glow and heat up just like they should but I have no volume control and no EQ control, There isn't any sound at all ;l ive tried using different cables and guitars still no luck, I was thinking maybe a bad connection or fuse? But this is my first tube amp and I have not a clue where to start. This goes for both channels. I have checked all the tubes they all glowed orange. If any one has any Ideas please let me know. If theres no avail i would have to take it to pmt -.-