shik
Junior Member
Posts: 83
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Post by shik on Dec 15, 2011 8:39:57 GMT -5
I am terrible embarrassed to admit this, but here goes...
Our first band practice after replacing all our stolen gear was a bit of a mess. Long story short, the other guitarists rig wasn't working so there was a lot of cable switching and signal routing changes going on trying to figure out what was broken. This led to two completely idiot mistakes on my part...
1. I played for about a minute on the nitro before realizing it wasn't plugged into a speaker (there were sparks....)
2. We had the output of his amp running into the output of my amp for about 10 seconds (I am going to blame him for this one since he didn't tell me he was switching anything.)
At first everything seemed ok, but once I tried to turn up, the amp wouldn't get very much volume (past 12 o'clock and I didn't need earplugs) and it didn't get much louder than that.
After one song, the sound just cut out. I turned everything off to take a peak around and everything seemed ok so I tried again. Halfway through another song and it happened again.
At this point I knew something was wrong....
Any idea what it could be? All the tubes were lit so if it is those I can't really tell...
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Post by rocknrolla on Dec 15, 2011 10:25:44 GMT -5
As always, try new power tubes but I think you broke your amp. By output you mean the speaker out?
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shik
Junior Member
Posts: 83
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Post by shik on Dec 15, 2011 10:31:14 GMT -5
yes. The consensus on the other site I posted was that I blew my output transformer.
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Post by Ayton(e) on Dec 15, 2011 11:56:34 GMT -5
In the prostitution business we call this ass to ass.  I feel like the output tranny would smoke/smell if blown, from my experience with other transformers, but maybe it didn't get that far. Can't believe you fed the amps into each other's output, jeez! How many cables are back there? Might be time to simplify the rig? If you're lucky, a patch cable in the loop could be bad, which causes cutouts. Turn the loop off to check. |
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shik
Junior Member
Posts: 83
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Post by shik on Dec 15, 2011 13:44:41 GMT -5
It was a mess and the other guy switched his end without telling me. I absolve myself of all responsibility for that one.
The rig is pretty clean, it was just that we were switching so many cables, trying different inputs and cabs.
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Post by DonaldDemon on Dec 15, 2011 18:17:59 GMT -5
Wow. Dude..wow. You need to simplify things I think. How is your other guitarist stupid enough to plug his amp output to your input?! Sorry brother...hope the prognosis is not so bad.
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Post by rocknrolla on Dec 15, 2011 18:31:20 GMT -5
Send it back to Scott to get re-Splawned.
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Post by cecilbag on Dec 16, 2011 11:08:38 GMT -5
Have you considered a cage match with the other guitar player. I believe I'd have to go ballistic if this happened to me. Good luck but how many cables could you possibly have?
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Post by Tempest on Dec 16, 2011 13:19:52 GMT -5
Should keep track of the damage so that guitarists everywhere know what happens in circumstances like this, because I think this is probably the first time it's has ever happened in the history of amplification!
I can see it now, on a diagnostic/help forum...
SYMPTOMS: Blah blah blah SPARKS blah blah blah SMOKE blah blah blah THIRD DEGREE BURNS
DIAGNOSIS: Another guitarist may have plugged his amp into the output jack of your amp.
(yes, this has happened)
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shik
Junior Member
Posts: 83
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Post by shik on Dec 16, 2011 18:29:02 GMT -5
I have determined that they probably weren't sparks but the power tubes arcing a little bit. Thats what my tech said anyway. He seems to think it should be ok with just a re tube so I am going to give it a shot when I get it on monday. I will let everyone know how it turns out.
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Post by banenis on Dec 17, 2011 15:11:47 GMT -5
If there is arcing when there's an infinite load (no speakers attached) it's probably arcing in the OT.
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Post by splawndude on Jan 4, 2012 12:35:23 GMT -5
any update shik?  |
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shik
Junior Member
Posts: 83
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Post by shik on Jan 4, 2012 15:17:26 GMT -5
Actually, yes. The situation is not really resolved yet so I haven't posted anything.
I took it to my last practice and had about an hour of play (which was awesome, the volume issue was fixed) before I lost all sound. I called scott and he suspects it is a bad pre-amp tube so my plan is to replace one by one. Because of the holidays, we haven't had a practice in a while so I can't approach the same volume level it was breaking at before.
We have a practice tomorrow where I will bring some spare tubes to swap around and hopefully get this whole terrible experience behind me.
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Post by splawndude on Jan 4, 2012 22:26:49 GMT -5
OK. Keep me posted and good luck.
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shik
Junior Member
Posts: 83
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Post by shik on Jan 6, 2012 16:36:39 GMT -5
All right. So I got through all practice yesterday (2 hours) without losing any sound. At this point, all that has been done are a bias adjustment, and replacing the V1 and V2 pre-amp tubes.
While I was able to play, I had some terrible noise issues. Not regular feedback, but a high pitched "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee" sort of noise. Turning it down didn't really help at all so I think I might end up replacing the other preamp tubes as well. If that doesn't work, oh well, I have spare tubes now. I might also try another guitar next time as well just to be sure.
I am starting to feel like I really dodged the bullet on this one.
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