problem with volume control on a tube headphone amp


I have had my headphone amp now for about 2 years and have enjoyed it with no issues, added a turntable to the mix about 2 months ago and have been using it more and more as things burn in (tube phono, new arm, new cart, interconnects) and have put about 60 hours on the system since the added turntable, about 5 weeks ago I noticed that when I turn the volume all the way down the left channel still played ever so low but still played, now within a few days it has gotten louder and now is louder when turned all the way down than I care to listen to if I was adjusting both sides myself. I was wondering if spraying some contact cleaner or wd40 into the switch/control would be a good place to start. I have the amps bottom removed and do have good access to the piece in question. The amp is a Yamamoto HA-03 and out of warranty. If this doesn't work then would the next step be replacing the volume control or is there something obvious I might be missing. The problem is on both sources, turntable and CD. Thanks for any input.
tooblue

Showing 1 response by glennewdick

+ Elizabeth


also:

do not put WD40 I electronics period (wd40 is a cleaner with a mild lubricant not really good for anything imo). use a proper electronics cleaner. Also should note most volume pots are not very closely matched at their extremes ( fully off or fully on), you could have a bad volume pot too though.

it may also be you have to much gain in your phono section (CD) do you have gain adjustments so you can lower the phono stages gain? I know you said both cd and records so may be reaching there.