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Marantz 1070 schematic wanted

Discussion in 'Electronic Repair' started by Dave, May 28, 2007.

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  1. Dave

    Dave Guest

    Could anyone help me with a schematic for a marantz 1070 Amp

  2. David Farber

    David Farber Guest

    I have the schematic on microfiche. Did you have a particular problem or
    question you'd like to share with the group?
  3. **There are few problems with the 1070 that cannot be solved easily. If the
    relay is a milky white type (rather than clear plastic), replace it. It is a
    cause of channel dropouts. If both channels are out, check regulated power
    supply (simple zener, series pass arrangement). There should be 41 Volts DC
    (Check ripple) at J810. That's pretty much it. Output stage failures are
    very rare. If one has failed, don't forget to check Emitter resistors.
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