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Mesa Mark IV power supply

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  • Mesa Mark IV power supply

    Mesa Mk IV power supply, I've tried the usual searches here & Hoffman & anywhere else via Google. Instead of Mk IV, I get Bass 400, Dual Recto, etc. plus 5 pages of Mk IV but NO power supply. I'm working on one where there's some funny business going on in the bias supply. Stymied... can anyone help, thanx much in advance!
    This isn't the future I signed up for.

  • #2
    Does this work for you? Since it doesn't say A or B on the Schem I'd say it's the A version here.

    nosaj
    Last edited by nosaj; 01-17-2016, 06:15 PM.
    soldering stuff that's broken, breaking stuff that works, Yeah!

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    • #3
      There were two versions of the amp: A and B. B version is here: http://www.amparchives.com/Amp%20Arc...Schematics.pdf

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      • #4
        Closest I have is the attached Mark IVB power supply schematic.
        HTH,
        Tom

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        • #5
          I'd think the first one sure looks funky compared to the B version.

          nosaj
          soldering stuff that's broken, breaking stuff that works, Yeah!

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          • #6
            You guys are like alka-seltzer, speedy relief! Yeh the B version has the detail I need.

            That should do it, muchas garcias Tom & Markus & nosaj!

            This isn't the future I signed up for.

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