M70 slight problem...what could it be?

Discussion in 'Yamaha' started by tygr, Mar 12, 2018.

  1. tygr

    tygr AK Subscriber Subscriber

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    Location:
    San Antonio
    I have an M-70 amp that sounded great for about 6 months after I purchased it. Now, however, there is a slight amount of distortion in the left channel. It started all of a sudden one day after powering up and hasn't changed or gotten worse on subsequent tries.

    Any clues as to what could have died? Any help appreciated. I'm just trying to determine what the cost should be at the local repair shop. Thanks.
     

     

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  2. avionic

    avionic " Black Knights " Subscriber

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    41,590
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    Fort Dodge, Iowa
    Dirty input attenuator or relay contacts possibly. Maybe a cold solder connection.
     
  3. Bratwurst7s

    Bratwurst7s In The Frying Pan Subscriber

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    Munich, Germany
    Have you swapped the pre-amp inputs, and then the speaker wires, to listen if the problem moves to the right channel? Just to eliminate them from being possible culprits.

    Cheers,
    James
     
  4. tygr

    tygr AK Subscriber Subscriber

    Messages:
    1,098
    Location:
    San Antonio
    Thanks kids. Will give it a more thorough check.
     

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