Why is the volume on my Marantz NR1200 not working?

Why can the volume only be heard extremely low on the phonograph...not at all on the tape player, tuner,or CD player that the receiver is hooked up to in a built in wall unit?

이 질문에 답하기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

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