I have a scratchy socket

Discussion in 'Amps and Cabs' started by olejason, Oct 7, 2008.

  1. olejason

    olejason Supporting Member

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    My amp is making an intermittent 'scratchy' noise like if you turn a really dirty pot. I tinkered around with it a little and it looks like the first power tube is causing it. If it starts making the noise and I tap the first tube it will usually stop.

    I switched the tubes around and it still does it so it must be the socket. Should I try cleaning it or is it just not holding the tube tight enough?

    The amp is about 34 years old
     
  2. olejason

    olejason Supporting Member

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  3. realityczech

    realityczech Senior Member

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    Sorry about the delayed response.
    Your amp may be 34 years old but the average age here at TGP is 68 years old. Hence the delay eh?
    Sounds like you have answered your own question.

    Microphonic tube/dirty sockets
    Clean and retension sockets and replace suspect valve.
     
  4. walterw

    walterw Gold Supporting Member

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    "I have a scratchy socket"

    i think they make an ointment for that
     
  5. olejason

    olejason Supporting Member

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    What's the best way to clean it? Just a dry cloth or what? After I jiggled the tube a little it hasn't made any more noise.

    It seems a lot of things can be fixed just by a little jiggling
     
  6. dosmun

    dosmun Member

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    It sounds like you may have solved the problem. Sometimes just taking the tube in and out a couple times will clean the socket if it is not loose. Maybe even spray some contact cleaner on the tube pins and then put it back in the amp.
     
  7. hathisisfunnyha

    hathisisfunnyha Member

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    Preparation H. apply as needed
     
  8. Hebb

    Hebb Member

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    You should try a product called Caig's Deoxite. They make some really great stuff, especially for audio.

    http://www.caig.com/
     
  9. rockon1

    rockon1 Member

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    Yep thats the stuff. If you cant wait for that you can get electrical contact cleaner at your local Radio Shack. It works pretty well too.

    Spray the tube pins and work it in and out a few times. Wipe off any excess and wit a few minutes and try it. Bob
     

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