Yamaha MX-2 Stereo Amplifier HCA Chip

Discussion in 'Yamaha' started by bmanone, Feb 23, 2019.

  1. Mark B

    Mark B Yamaha Fan Subscriber

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    Good advice.

    I've got an MX-1 and it would be a damn shame if it lost a channel due of a bad HCA IC. AK'er amr2 researched which Yamaha gear used the BA3122N, and here's a link to the thread he started:

    http://audiokarma.org/forums/index....perbolic-conversion-amplification-hca.737425/
     

     

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  2. brutal

    brutal YamaHoarder Subscriber

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    "The Yamaha AX-730, AX-930, AX-1050, and AX-1070 used the BA3122 N HCA IC and it is believed it was used in the AX-1090, but this is not so far confirmed."

    I have to think they're a pretty durable IC considering what some of them have been through.
     
  3. amr2

    amr2 Well-Known Member

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    Barry, I can ask you for that IC if you want. I have a friend working in a Yamaha Service Center.
     
  4. brutal

    brutal YamaHoarder Subscriber

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    Do you think they hoard those parts?

    The place I ordered these from 8 years ago, encompass, no longer has stock. Sadly, I only ordered 2 at the time thinking I would need them to effect my MX-1 repair.
     
  5. bmanone

    bmanone Active Member

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    Brutal,
    PM Sent.
    Thanks!
     
  6. Bratwurst7s

    Bratwurst7s In The Frying Pan Subscriber

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    AX-1090 = Confirmed. IC 603 & 604 = XG609A00 = BA3122N.

    Cheers,
    James
     
    Last edited: Mar 15, 2019

     

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  7. amr2

    amr2 Well-Known Member

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    Probably not...
     
  8. tczech2003

    tczech2003 AK Subscriber Subscriber

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    Were you ever successful in finding that BA3122N IC? I need one for a MX-1 and so far have had no luck finding a source.
    Thanks,
    Joe
     
  9. amr2

    amr2 Well-Known Member

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    I was not lucky... :(
     
  10. eldad

    eldad New Member

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  11. tczech2003

    tczech2003 AK Subscriber Subscriber

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    Thanks for the links. I contacted littlediode but no joy.
    I’ll send an inquiry to alibaba.
     

     

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  12. bmanone

    bmanone Active Member

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    My MX-2 is up and running again today, thanks to a generous trade by a fellow AKer. I currently have it playing through some test speakers (8 in woofers setting in the cardboard box they came in) for a day or so before I hook it up in a better system. Thanks AKers that participated in the thread for your help!
     
    Mark B, amr2 and Bratwurst7s like this.
  13. amr2

    amr2 Well-Known Member

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  14. brutal

    brutal YamaHoarder Subscriber

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