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Vox AD50VT no sound ?

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  • #1

    Vox AD50VT no sound ?

    Hey folks, I have a Vox AD50VT Valvetronix with no sound. Powers up, tube works, fuse is good. Owner said it went dead ,and he then tried an external cabinet which he says worked for a couple of hours then quit. All the solder joints look good. I even went over them. What I DID fine was the phone/line jack will not take a plug. I see from a diagram I found that when this is used it mutes the speaker? I'm guessing this could be the issue. Can this be bypassed if I can't fix it?

    Thanks all !
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  • #2
    Originally posted by gtrplayr1976 View Post
    What I DID fine was the phone/line jack will not take a plug. I see from a diagram I found that when this is used it mutes the speaker? I'm guessing this could be the issue.
    Do you mean that you can't insert a plug into this jack? Is there a broken plug end inside the jack?

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    • #3
      I have a AD60VTX that had (has?) a similar problem: after using the headphone out jack - which mutes the speakers - and then removing the headphone plug, the speakers did not come back to life. After a certain amount of working on the problem the speakers work now. I have not yet considered trying the headphone jack again.

      So I think you're on the right track, get the jack cleaned up or bypass whatever functions you need to get the speakers working again.
      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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      • #4
        Originally posted by 52 Bill View Post
        Do you mean that you can't insert a plug into this jack? Is there a broken plug end inside the jack?
        Yes Bill I couldn't get a plug in it. I removed the jack ,and cleaned it. It had a freakin' mud daubers nest in it !

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        • #5
          Originally posted by eschertron View Post
          I have a AD60VTX that had (has?) a similar problem: after using the headphone out jack - which mutes the speakers - and then removing the headphone plug, the speakers did not come back to life. After a certain amount of working on the problem the speakers work now. I have not yet considered trying the headphone jack again.

          So I think you're on the right track, get the jack cleaned up or bypass whatever functions you need to get the speakers working again.
          It had a mud daubers nest in it. I removed it ,and cleaned it ,and is now working.

          Comment

          • #6
            Originally posted by gtrplayr1976 View Post
            It had a mud daubers nest in it. I removed it ,and cleaned it ,and is now working.
            Obviously your debugging skills are second to none
            Experience is something you get, just after you really needed it.

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            • #7
              Originally posted by nickb View Post
              Obviously your debugging skills are second to none
              Well I got ONE

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              • #8
                "It's making this strange buzzing sound..."

                Justin
                "Wow it's red! That doesn't look like the standard Marshall red. It's more like hooker lipstick/clown nose/poodle pecker red." - Chuck H. -
                "Of course that means playing **LOUD** , best but useless solution to modern sissy snowflake players." - J.M. Fahey -
                "All I ever managed to do with that amp was... kill small rodents within a 50 yard radius of my practice building." - Tone Meister -

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