Time to figure out what is wrong with my CR3020

Discussion in 'Yamaha' started by 10sguru, Aug 13, 2018.

  1. clinic-audio

    clinic-audio all on YAMAHA untill 1990

    Messages:
    2,112
    Location:
    France
    The coupler switch is behind the unit and is used to separate preamplifier from amplifier
     
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  2. 10sguru

    10sguru Member

    Messages:
    90
    Location:
    Bristol, Tn.
    The CR3020 has a built in preamp section. The coupler switch allows you to separate the power amp section from this built in preamp section in the event you wanted to use either section as a separate component paired to another power amp or preamp, at least that is my understanding. There are several Yamaha experts in this forum that can most likely expand on the disadvantages/advantages of this type of configuration.
     
  3. avionic

    avionic " Black Knights " Subscriber

    Messages:
    42,085
    Location:
    Fort Dodge, Iowa
    Disassembly and cleaning / deoxiting the switch. You can try squirting some deoxit into it. But it probably won't last very long.
     
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  4. 10sguru

    10sguru Member

    Messages:
    90
    Location:
    Bristol, Tn.
    Thanks again for all your help Dave
     
  5. avionic

    avionic " Black Knights " Subscriber

    Messages:
    42,085
    Location:
    Fort Dodge, Iowa
    Your CA-2010 has one as well.
     
  6. Mr. Yamaha

    Mr. Yamaha Not so much Yamaha lately... Subscriber

    Messages:
    897
    Location:
    Amsterdam Area, The Netherlands
    Which also needs full disassembly and cleaning, just like the 'mode' switch (direct coupled or cap coupled) :D
     

     

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  7. avionic

    avionic " Black Knights " Subscriber

    Messages:
    42,085
    Location:
    Fort Dodge, Iowa
    Just like all slide switches..
     
  8. Mr. Yamaha

    Mr. Yamaha Not so much Yamaha lately... Subscriber

    Messages:
    897
    Location:
    Amsterdam Area, The Netherlands
    And the wafer switches :D
     
  9. avionic

    avionic " Black Knights " Subscriber

    Messages:
    42,085
    Location:
    Fort Dodge, Iowa
    As long as your in there. Cleaning all the controls and switches would be a great idea.
     

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