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Post subject: Vibro Champ Silver Face quiet
Posted: Fri Mar 18, 2011 6:28 pm
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Hobbyist
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Joined: Fri Mar 18, 2011 6:21 pm
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I have a vibro champ silverface that I'm having trouble getting much volume from. The tube socket for the 6V6 GT tube was having issues and was shorting out causing a short between pins 3 and 4 on the socket and sparking. I replaced the socket and the shorting has stopped and the amp works. However it is now VERY quiet. Very little volume is coming out. Any ideas on this? I've got a new tube on order and should be here in a couple of days. Right now I'm still trying it with the old tube. Is it a possible bad tube?
Thanks,
Mike


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Post subject: Re: Vibro Champ Silver Face quiet
Posted: Fri Mar 18, 2011 8:28 pm
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Rock Star
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Joined: Sat Jul 03, 2010 2:18 pm
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May want to check the bypass cap tied to the power tube's cathode & cathode resistor. They might have gone way outta spec.

Also, may want to pull tube and check voltages on plate and screen. IF your amp has screen resistor, this could have popped. Be careful here, as the amp will need to be turned on. No input, volume at zero, speakers connected.


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Post subject: Re: Vibro Champ Silver Face quiet
Posted: Sat Mar 19, 2011 5:58 am
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Aspiring Musician
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Joined: Fri Dec 12, 2008 5:32 pm
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If it was arching more then likely it's the tube.I would wait for the new tube to come in


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