mxr pitch transposer repair question

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9 volt
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Post by 9 volt »

Hi there, has anyone tried repairing an mxr pitch transposer. Mine seems to be generating its own sound rather than altering the input signal. Many tantalum caps inside that I have replaced not fixed the problem. Thanks
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sadrew
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Post by sadrew »

that's a complex unit and no schematics around it seems

power supply checks ok ?
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9 volt
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Post by 9 volt »

Sure is complex. Voltages seem ok.
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sadrew
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Post by sadrew »

very hard to address the problem without a schematic

have you tried trace the signal path with an audio probe ?
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rlg42fs
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Post by rlg42fs »

Schematics and calibration info are now available for the MXR 129 at tauntek.com
Even a circuit description...
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