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sony sqr-4750

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    Sony SQR-4750 Quadraphonic Receivers

    A friend has gifted me with two Sony SQR-4750 Quadraphonic Receivers. I have cleaned and deoxed both, and they appear to both have the front left channel blown (very weak, and distorted in two or 4 channel mode, better when outputs bridged). We are looking for the schematic today. Anyone have...
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