giantstepjoe
Well-known member
I just got this Mark IVb combo and I love it but I think it may have an issue. I traded for it and when I brought it home I noticed one of the 6l6s in the inner sockets was blown. I replace the inner tubes with a set of Mesa 6l6's I had hanging around, fired it up, and both it the inner tubes worked again so I just figured I had a bad tube. I used it several times since for a few hours total since and when I fired it up today it sounded a little off so I looked in the back and lo and behold the 6L6 in the same socket as before was dead. I'm really hoping this is just coincedence and I had two bad tubes in the same place twice. I replaced the tube again and now its working again, I guess I'll find out within the next couple of days whether or not it's the amp. Am i correct in assuming that if it's not the tubes that there is an issue with this particular tube socket and or its connections? I really hope that if there is something wrong that it won't be a timely or costly repair. Thoughts?
Also My Mark IV is hums loudly when you switch from standby to on and then settles into a softer but still obvious hum when running. Is this normal? My Bosses' Mark IV seems to react the same way but not quite as loudly
Also My Mark IV is hums loudly when you switch from standby to on and then settles into a softer but still obvious hum when running. Is this normal? My Bosses' Mark IV seems to react the same way but not quite as loudly