Yamaha Cr-2020

Discussion in 'Yamaha' started by jplainview, Jan 20, 2019.

  1. jplainview

    jplainview New Member

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    I have a newly bought second hand Cr-2020 that was said to be in storage for a long time. Everything is pretty crisp and new feeling and I love it. The only issue I noticed initially was the right channel wouldn't come in until the receiver warmed up. Then I realized even cold, if I cranked the volume up somewhat loud for just a second, it'll come on. So it would come in by force, essentially. I understand it may be contact wear on the relay. Never got to cleaning the contacts before I caused a bigger issue.

    So along with the receiver I picked up some NS-1000's (amazing btw) and I was testing out how much juice I could get out of the system and cranked some hip hop on AUX input to sample the bass and imaging. (BTW because of my listening position I turn the balance about 80% to the left channel.) So I'm cranking it up, and the left channel cuts out, then in, then out, I hear the relay click, and of course no sound in either after.

    Now when I turn on the receiver, the relay clicks, the right channel comes through immediately while the left channel is completely dead. I've toggled the coupler switch in the back just so I know I tried it, but this problem seems to be relay/fuse/(?) related. Anyone have any ideas of what happened? I've got 3 sets of speakers connected and all left channels are dead.
     

     

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  2. clinic-audio

    clinic-audio all on YAMAHA untill 1990

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    Hello

    1) check the both fuses on the main power board (do it power off )

    2) compare left and right voltages on tags (easy to do and fast ) just be carefull with probes and avoid shorts !

    come back with report
     
  3. avionic

    avionic " Black Knights " F-15 Eagle Keeper Subscriber

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  4. avionic

    avionic " Black Knights " F-15 Eagle Keeper Subscriber

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    Playing all at once?
     
  5. jplainview

    jplainview New Member

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    I usually A/B/C them, sometimes A+B, A+C but rarely.
     
  6. jplainview

    jplainview New Member

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  7. avionic

    avionic " Black Knights " F-15 Eagle Keeper Subscriber

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    The possibility is there. Next time instead of cranking up the volume. Tap on the relay.
     
  8. avionic

    avionic " Black Knights " F-15 Eagle Keeper Subscriber

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    Could be a bad solder connection as well.
     

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