#1
Hey everyone,

I just bought an Orange Dual Terror off ebay which I'm starting to think was a bad idea...
Cosmetically the head is in great condition. I turned the amp on full power, activating all four power valves etc. And I immediately noticed the second power tube along from the guitar input socket wasn't glowing orange like the other three power tubes. Not sure on the preamp valves as they're covered with a metal casing. Either way I decided to plug my guitar in. I had my volume knob on the guitar off (on zero) and the amp was making that characteristic "buzz" sound, I then slowly turned the volume and gain up on the amp and there was a sudden bright light blue flash from one of the tubes (not sure which one) when i reached about 5 on the volume and gain and everything went silent. That characteristic buzzing sound stopped.

This is my first valve amp so I have no idea what all of this means!

The amp was described as "in near perfect condition"

Any help would be great, thanks
#2
You blew a tube. Don't try to play it anymore before replacing the power tubes at least and biasing the amp.

It's not a huge deal per se but an amp described in near perfect condition should be retubed. I'd try to get some money back.
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#3
Thanks for the quick reply dude! That's what I suspected. I'll see if I can get some money back to cover a new set of valves.
#4
Hang on, Relax for a bit. They might just be not plugged in properly. Try pulling the power tubes out and plugging them back in again.
If that has no effect, buy some JJ EL84's. They're cathode biased so no need to rebias the amp. All plug and play. Easy peasy.
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#5
Quote by Cathbard
Hang on, Relax for a bit. They might just be not plugged in properly. Try pulling the power tubes out and plugging them back in again.
If that has no effect, buy some JJ EL84's. They're cathode biased so no need to rebias the amp. All plug and play. Easy peasy.


I'll try that, thanks dude
#7
whenever i get an amp shipped to me, i always re-seat the tubes. a lot of shit can happen in shipping. trains, planes, and automobiles throwing in every direction by dozens of people, subjected to different temps, etc.
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