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Repair and disassembly information for amplifiers in home audio systems.

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Marantz pm7003 single output channel is not working

My beloved pm7003 amp is not working..

Right channel speaker out put is not working and also same at headphone output.

All other function is working fine.

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@daniely right speaker out not working and Right side headphones as well?


Hi @daniely ,

Have you proved that it is the right channel output that is the problem by changing or reversing the selected input or by changing the source of the signal?


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@daniely you'll have to start taking it apart and check a couple of voltages on the speaker terminal board (the board that has the output mounted to it). Check the voltages on your relays L751 L752 and L753 compared to the diagram. Let us know what you get.

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Daniel zal eeuwig dankbaar zijn.

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