Hi all. Last Monday I bought the floor model LSS from a local music store. The problem is that the volume drops out by about 30% or so and then comes back and it seems to happen the worse right after I turn on the amp. I spoke with Michael Wolfe at Mesa and he ask me to touch the power tubes. The two in the center were hardly warm so he diagnosed them as bad and said he'd send me out two. Since then I've found that those two tubes don't get warm unless you have the amp on the 30 watt setting. hmmmm... The problem occurs at all wattage settings on both channels and the FX loop hard bypass doesn't affect it. I pulled the EL84's out of my Peavey Delta Blues and swapped them with the LSS and it still has the same problem. The problem seemed to go away for small amount of time after I swapped the tubes but it's back. Possible 5Y3 driver tube?
TIA,
CasaRojo
TIA,
CasaRojo