Problem Withfill Mesa Boogie Mark1 reissue

Discussion in 'Other Amps' started by Luciano, Oct 17, 2021.

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  1. Luciano

    Luciano New Member

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    Hi, I am a new membri of community, I am fronte Italy.
    I have a big problem with.just one 6l6gc on my amp( the first from left) Mark 1 residue Mesa Boogie
    One night we was playing
    And the eletric current stop it.
    Without turn the amp in stand by, the eletric current returned.
    Thai I big problem just on one tube. My bias king show-45A on the rest of the tubes, the other show 1
    Somebody could help me
    Thanks
     
  2. The Dose of Harmony

    The Dose of Harmony Well-Known Member Gold Supporting Member

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    if i were you i would put a new Set , not familiar with the Mark I but a have and Mark V and Rec.


    Check this generic video

     
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  3. pedecamp

    pedecamp Well-Known Member

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    Good video! :yesway:
     
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  4. RLW59

    RLW59 Well-Known Member

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    The first thing to do is swap the existing tubes around and recheck with the Bias King.

    If the same tube reads low in a different socket, the tube is bad. But if the low reading stays in the same socket with a different tube, there's something wrong with the amp internally.
    -------------------------
    It's most likely the tube. But you don't want to buy a whole quad of tubes and then discover the problem is actually the amp.
     
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  5. Luciano

    Luciano New Member

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    Thank you, another problem:
    With tester, on pin 5 I have 245V, I know you got to have something like 40V. Is this true?
     

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