Help, Was operating RTTY when my Centurion Amp quit working. The symptom is that it shows 200 Ma Even in the Stnby position the plate current is 200 Ma & the tubes are moderately red. The tubes are only a year old. Any idea what might have happened? Looks like a trip a trip to TT. Anyone with a Centurion Amp have this symptom? Thanks, Doyle/N4VV