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Help with Silvertone 1481. Scratchy sound but not the pots!

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  • #16
    I usually find that Deoxit and a couple of lightly rotated insertions works fine. I have tub full of 12au7's from an old, but lightly used Conn organ that got left out in the rain and then abandoned by the owner. The pins aren't rusty, just sort of mottled with a black oxide. I clean them with Deoxit and a brass toothbrush. Well, I guess it's not technically a toothbrush but that's the shape. Seems to work fine and no conductive dust or scratches on the pins.

    I have cleaned badly oxidized jack contacts with fine sand paper though. Very lightly. But they have to be really bad and I have to be in a remote location without a proper replacement jack because many (if not most) jacks are plated.
    "Take two placebos, works twice as well." Enzo

    "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

    "If you're not interested in opinions and the experience of others, why even start a thread?
    You can't just expect consent." Helmholtz

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    • #17
      Usually pulling a tube in and out of its socket a couple times cleans the pins. But when I really feel the need, I use a wire brush in my Dremel. You can use the common wire wheel, but I like teh end brushes.

      Here are wire wheel, cup and end brushes.

      Click image for larger version

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      Education is what you're left with after you have forgotten what you have learned.

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      • #18
        I use those add on pencil erasers, no paper for me.
        Click image for larger version

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        It's weird, because it WAS working fine.....

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        • #19
          For socket scrubbing, I use wound guitar strings. I forget the size though.

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          • #20
            What are the pins made of? Like I mentioned, I have a small tub of au7's with oxidized pins. They don't rust, they just turn different levels of black. And, apparently, they can take some high temps and also maintain this low level of oxide formation.
            "Take two placebos, works twice as well." Enzo

            "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

            "If you're not interested in opinions and the experience of others, why even start a thread?
            You can't just expect consent." Helmholtz

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            • #21
              I have a set of root canal files I got from my dentist, they are my last defense before socket replacement.

              Click image for larger version

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              Education is what you're left with after you have forgotten what you have learned.

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              • #22
                Originally posted by Enzo View Post
                I have a set of root canal files I got from my dentist, they are my last defense before socket replacement.

                [ATTACH=CONFIG]42185[/ATTACH]
                Great! Now I'm afraid to close my eyes and go to sleep! Thanks, Enzo
                If it still won't get loud enough, it's probably broken. - Steve Conner
                If the thing works, stop fixing it. - Enzo
                We need more chaos in music, in art... I'm here to make it. - Justin Thomas
                MANY things in human experience can be easily differentiated, yet *impossible* to express as a measurement. - Juan Fahey

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                • #23
                  Originally posted by Enzo View Post
                  I have a set of root canal files I got from my dentist, they are my last defense before socket replacement.
                  Do you speak gently to those sockets "this won't hurt a bit... you won't feel a thing!"

                  I did speak to my endodontist one fine day . . . well maybe not so fine I'm sure you know what I mean . . . in any case I noticed the instruments she was using to ream out my tooth's roots. Despite being zonked on some painkiller I noticed they were prime for tube socket cleaning. She didn't/wouldn't share any of them (dang!) but she probably saved me from an even worse infection so I couldn't complain. That gal has a cast iron stomach! Since then I noticed dental brushes intended for cleaning gaps between teeth have appeared on grocery store shelves, and in several sizes. They are plastic, not metal, and with a dab of Deoxit are the best you can do, as Enzo says, last defense before replacement. I recommend 'em, buy if you see them, and don't forget to use some on your teeth. "Keep smilin' "
                  This isn't the future I signed up for.

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                  • #24
                    Perfect little reams for... well for something like tube sockets or other light work in tiny holes. My dentist had gone with newer ones and gave me some old ones. They may have not been what HE needed, but they worked fine for me.

                    A pipe cleaner might fit down a hole, sure would on an octal socket. I have some brushes specifically made for XLR holes. I have seen several little tooth gap cleaners, they look like short handles on taperd tiny pipe cleaners. I think most are plastic, but I have seen some with a wire center.
                    Education is what you're left with after you have forgotten what you have learned.

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