Bass 400+ with Mesa 6L6GC STR430 tubes into an SWR Goliath 4x10 and an SWR Goliath II 4x10. I can be 2 or 3 songs into a set and my output will slowly disappear as two or more tubes start glowing somewhat. If I don't quickly switch the standby off the 8-amp slo-blo fuse will blow. I can leave it on standby for a couple of minutes, turn it back on and it may work the rest of the night. One of the power tubes had a large black spot in it. I replaced it with all I had which was a Mesa 6L6GC STR420 from my old Strategy 400. Still, two or more seemingly random tubes will start glowing and the problem repeats. This doesn't happen every set and sometimes won't happen the whole night! Any ideas on what's causing this?
Thanks for anyone's help.
Have a good one.
koz
Thanks for anyone's help.
Have a good one.
koz