it is a head
checked the fuse...ok
checked the speaker cable...ok
checked footswitch cable...ok tried switching manually
tubes are all four 6L6`s lit ...but very dim....does not look right at all!
mode light only comes on when switching power on and/or off . light comes on for one half second each time ,then goes out until main power is switched again
you can switch mode manually and whichever mode is chosen that indicator light will come on and goe off each and only when main power switch is functioned.,,,,,,,,,,,just a second and out goes the light!