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In Reply to: RE: Anyone have experience with Audio Research VS-115 posted by George47 on July 28, 2014 at 11:04:33
They agree that a screen or plate resistor is likely gone due to an arcing fault in a tube.
And yes, I think I will replace all of the power tubes - I bought the amp used and don't know how many hours are on them. Upgrading to the KT120's definitely seems like the way to go.
Follow Ups:
Did you notice that the bad tubes were not 'glowing', or something else. Not glowing would indicate a filament issue.
That's what started the whole thing, when I decided to check the tube bias the next day.
It's a second hand amp and I had no idea how many hours were on the tubes. As it turns out, a few too many.
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