#1
I just got a Marshall DSL 201 and when i tried to put the tube in i accidently broke the end (not the end with the metal probes, the end that looks like a nipple) of one of my EL84 power tubes.

Firstly can I run it with only one power tube, not two.

Secondly can i use the broken tube (only the nipple on the end of the tube is broken so there is a tiny hole on top of the nipple but does the tube need to be sealed for it to work?) Also could i dab some superglue on the hole to patch it up or do i need a whole new tube???
My Gear

Guitars:
1981 Gibson Les Paul Custom
Fender MIM Standard Strat

Cort Acoustic

Amp:
Marshall JCM 2000 DSL 201

Pedals:
Dunlop Crybaby From Hell
Boss DD20 Giga Delay
Boss CE 2 Chorus
#3
A tube is what.. 10 dollars? Dont risk possibly hurting your amp over somthing so cheap and easy to fix. That being said, I am not positive it will even harm the amp. Better safe then sorry.
#4
The amp will run on one tube, although it won't be as loud and you'll loose alot of your clean headroom. Some people intentionally take out a tube to make it easier to overdrive the amp.

DON'T try using the broken tube in it though, it can damage the amp and also be a fire hazard. I would buy a matched pair of tubes when you can, it's not a good idea to use mismatched power tubes. Also, make sure you UNPLUG the amp when pulling the tubes if you don't want to electrocute yourself. I always wear gloves when dealing with them for extra safety (amps can hold a current even after they're unplugged) and because the oil on your fingers is bad for the tubes.

Don't even think about using superglue.
PRS Dave Navarro signature/Burny RLC-70 - Sonuus Wahoo wah/filter - Vox ToneLabLE - Boss DD-5 - Zoom MS-50G - Modded Ampeg VT-22 100-watt tube head or Peavey VK100 100-watt tube head (6L6GC's in both) - Soldano 4X12 cab w/Eminence Legends.
#5
Definitely learn to discharge your filter caps. You don't want to take 400v across the heart, do you?
"Everybody, one day will die and be forgotten. Act and behave in a way that will make life interesting and fun. Find a passion, form relationships, don't be afraid to get out there and fuck what everyone else thinks."
#6
at least there isn't an insane amount of current though. the current is what will **** you up.


eg: car battery. 12v, 680 cranking amps. become part of the circuit and it will ****ing kill you
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#7
If it does work, the push pull is going to go out of balance as it's only half of one pair, creating a lot of hum. I guess Matt has some experience with it, but I wouldn't try it personally. Normally, you take the tubes out in pairs from an A/B circuit. Also, don't try to use a busted tube. They are called "vacuum" tubes for a reason.
"The fool doth think he is wise, but the wiseman knows himself to be a fool." - W.S.
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#8
if you broke through the tube, you likely broke the vacuum inside. so no, don't use a broken tube. it'd be like screwing in a cracked lightbulb. (if you're bored, try it sometime! i hear they burn the filaments instantaneously)