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2006-11-27, 04:51
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New Blood
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Join Date: Nov 2006
Posts: 4
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Another Odd 5150 problem
I bought the amp used a few weeks ago, everything has been working fine until recently when the tone started getting weak and the sound would cut out for a few seconds when i turned the postgain up to 3 or louder. All the tubes inside are glowing and the sound doesn't cut out if the postgain is 2 or 2.5. It especially cuts out if i do thick rhythm parts on the E string or my Low B.
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2006-12-01, 14:29
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Supreme Metalhead
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Join Date: Mar 2006
Location: West Coast
Posts: 839
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Eddie Van Halen is with drawing his spirit from the amp, no more rockin for you!
Seriously, its a tube amp, replace the preamp tubes, not a very odd problem.
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"So often our hands get caught up in ruts of muscle memory. 'Muscle memory' is an accurate term. We get used to doing certain things, without even being aware of them. This ultimately not only shapes and therefore limits our technique, it also shapes what we compose, what we write. We end up thinking still unknowingly trapped in that box." -Adam Nitti
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Originally Posted by the_bleeding
buy a stick of graphite (art stores) and rub it into your nut
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2006-12-01, 16:36
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Post-whore
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Join Date: Dec 2004
Location: Toronto, Canada
Posts: 1,816
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post gain refers to poweramp... so thats probably where the problem is
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Originally Posted by Dahmers Fridge
In the US "fanny" is a word used to describe the ass or butt. Here in the UK "fanny" is a lady garden (vagina)
I was very bemused as a youngster watching the Golden Girls when Blanche said she was going to "spank her fanny" I had visions of a geriatric vertical bacon sandwich red and bruised from being disciplined!!!
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2006-12-02, 19:43
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Supreme Metalhead
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Join Date: Mar 2006
Location: West Coast
Posts: 839
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Ah yes you are probably right, for some reason I just assumed he said pregain. Yea if its postgain, your power tubes are going bad. When it comes to power tubes going out its best to replace them right away, if they blow they could cause other more serious problems.
__________________
"So often our hands get caught up in ruts of muscle memory. 'Muscle memory' is an accurate term. We get used to doing certain things, without even being aware of them. This ultimately not only shapes and therefore limits our technique, it also shapes what we compose, what we write. We end up thinking still unknowingly trapped in that box." -Adam Nitti
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Originally Posted by the_bleeding
buy a stick of graphite (art stores) and rub it into your nut
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2006-12-03, 00:13
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Post-whore
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Join Date: Dec 2004
Location: Toronto, Canada
Posts: 1,816
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Originally Posted by Valtiel
Ah yes you are probably right, for some reason I just assumed he said pregain. Yea if its postgain, your power tubes are going bad. When it comes to power tubes going out its best to replace them right away, if they blow they could cause other more serious problems.
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Like a transformer esprosion! or a cab fuckup! or an everything fuckup! esproded powertubes = DOOM... unless you have a sweet amp with powertube failure protection... mostly found on boutique stuff (like orange). In otherwords, your 5150 wont have it :P
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Originally Posted by Dahmers Fridge
In the US "fanny" is a word used to describe the ass or butt. Here in the UK "fanny" is a lady garden (vagina)
I was very bemused as a youngster watching the Golden Girls when Blanche said she was going to "spank her fanny" I had visions of a geriatric vertical bacon sandwich red and bruised from being disciplined!!!
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2006-12-14, 21:54
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Supreme Metalhead
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Join Date: Dec 2003
Location: UK
Posts: 727
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My other guitarist had a problem similar to this on his 5150 II.
The lead channel would start up fine, but after a while of playing it would loose all gain. Our amp tech checked it out and said there was nothing wrong with any of the tubes, and gave it a clean bill of health.
Next practise the amp did it again after a short period of use, so back to the tech it went, and we told him to try it out for a while, and he finally found the problem, it was a resisitor that controls power to the tubes, and it was faulty. He replaced it and all was well again.
If you can't fix the problem after replacing the tubes, suggest this.
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