Now you're all going to laugh at me :!:
I've got an Express 5:50 1x12 combo and while I had the protective grill off to check something else out, I had a good look around inside. I can see how the 6L6s can be accessed and removed when replacement becomes necessary, but I'm a bit confused about the pre-amp tubes!
After reading the manual and the stuff about diagnosing pre-amp tube problems by tapping on them etc, I was a bit surprised to find that the 5 12AX7s are hidden away inside silver cylinders (I presume for protection?). If you are going to do the tap-test, doesn't that have to be direct on the tubes themselves?
The main reason I'm asking is because I wanted to try to remove and put back one of the 12AX7s, just to see how easy it was (see - I said I was a tube-newbie!!). I tried "simply pulling out" the tube as described in the manual, but it didn't come out easily. I didn't want to damage anything by being naive/dumb, so I wanted to check with you non-dummy guys first! Do you first have to remove the protective cylinders by unscrewing or something first to get at the tubes :?:
Thanks, and sorry if this wins "dumbest post of the month" award 8)
I've got an Express 5:50 1x12 combo and while I had the protective grill off to check something else out, I had a good look around inside. I can see how the 6L6s can be accessed and removed when replacement becomes necessary, but I'm a bit confused about the pre-amp tubes!
After reading the manual and the stuff about diagnosing pre-amp tube problems by tapping on them etc, I was a bit surprised to find that the 5 12AX7s are hidden away inside silver cylinders (I presume for protection?). If you are going to do the tap-test, doesn't that have to be direct on the tubes themselves?
The main reason I'm asking is because I wanted to try to remove and put back one of the 12AX7s, just to see how easy it was (see - I said I was a tube-newbie!!). I tried "simply pulling out" the tube as described in the manual, but it didn't come out easily. I didn't want to damage anything by being naive/dumb, so I wanted to check with you non-dummy guys first! Do you first have to remove the protective cylinders by unscrewing or something first to get at the tubes :?:
Thanks, and sorry if this wins "dumbest post of the month" award 8)