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Mesa Mark IV schematic help

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  • Mesa Mark IV schematic help

    Hi All,
    I have a fried Mesa Mark IV for a repair. It's the later edition I guess (with 74LS14 and 74LS138 in a switching circuit and +5 / +12V voltage regulators in a power supply).
    Basically the power supply is a bit fried and can't read value of some resistors (I can measure them, but they have suspiciously low resistance). I have a schematic for Mark IV, but not complete (without power supply) and for the first Mark IV issue.
    Can anyone share Mark IV second edition schematic if possible?
    I will be much appreciated.
    Regards,
    Greg
    www.guitaraid.co.uk
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