Pioneer SX-990 main amp problems

Discussion in 'Solid State' started by Stink Bear, Feb 6, 2018.

  1. Stink Bear

    Stink Bear New Member

    Messages:
    35
    Location:
    Alaska
    Good news! The unit that wouldn't power up turned out to be an easy one. 2 fuses and it's up and running.
     
    Stillhouse and Oldsansui441 like this.

     

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  2. Stink Bear

    Stink Bear New Member

    Messages:
    35
    Location:
    Alaska
    Gadget, I won't need any parts to make the latest stereo work, but the cabinet is pretty rough and one of the front panel ends has a decent sized ding in it.
    I'm thinking about whether to get another cabinet for it or not, shipping to Alaska gets expensive.
    I'm lacking a set of preamp/main jumpers, and I have no speaker plugs. I might be interested in those if you have them.
     
  3. Oldsansui441

    Oldsansui441 AK Subscriber Subscriber

    Messages:
    1,543
    Location:
    Victoria, Australia
    Glad that was an easy fix.
     
  4. Stink Bear

    Stink Bear New Member

    Messages:
    35
    Location:
    Alaska
    Me too. It's nice when you get lucky. It sounds really good.
    After listening to this latest unit I'm wondering if I still have a minor problem with the last one I fixed. I think the right channel is still slightly weaker than the left and it just doesn't sound as good as this latest one. I didn't take the time to check out the rest of the components in the right channel, I just put in the 6 transistors and 2 resistors.
    I think maybe the weak channel one may become my first refurb / recap project.
     
  5. Oldsansui441

    Oldsansui441 AK Subscriber Subscriber

    Messages:
    1,543
    Location:
    Victoria, Australia
    Sounds like a good candidate for this. It is great having 2-3 of the same model to compare operation, as you are able to.
     
  6. Stink Bear

    Stink Bear New Member

    Messages:
    35
    Location:
    Alaska
    It's nice to have Polish blue prints as well.:)
     

     

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