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Pioneer sx1010 troubles

Discussion in 'Pioneer Audio' started by Oscar23, Mar 25, 2017.

  1. Oscar23

    Oscar23 Member

    Messages:
    76
    I did not change those two caps because dijkey had none so I ordered other replament caps and they sent me .22 uf 250 VDC was not sure if these were safe to use so I waited till I could figure it out I'm going to solder it all down tomorrow and I was thinking the same thing about that amp board it was great before I did the protection board
     
  2. Oscar23

    Oscar23 Member

    Messages:
    76
    There the protection board is good and I fixed the left amp.q6 on the amp board came loose causing the amp to rail the DC balance is now 0mv. I'm sure there will be more I have transistors to change on the power supply (these were not changed by the previous owner)
     
  3. zebulon1

    zebulon1 Into Phase Linear's lately Subscriber

    Messages:
    3,719
    Location:
    Las Vegas Nevada
    Take your time.
    Your picking up and learning lessons. Unfortunately the 1010 is giving the lesson's. Its really an advanced unit for a beginner.
    One of the biggest lessons to learn is how to get in to and work the set. learning too, not damage the hardware, as in components, boards and wirewraps. How the units come apart and the best way to access the need work.
    The new 2383's on the PS are ECB. When mounted they will have the center leg (Collector "C") located forward the the face of the transistor.
    This is a heads up only. Always know the leg placement and make sure your right.
    I've said this many times. "I spend more time checking my work than actually doing it". It saves time and money ahead.
     
  4. Oscar23

    Oscar23 Member

    Messages:
    76
    I actually had the legs right on the protection board I just had the q6 at the wrong end I was working with it on the side and I got the ends mixed up. And dam straight that 1010 is taking me to school. I've done little units in the past but mostly just changing caps this is the first time I've ever done diodes, transistors, relays ( I have the new one just haven't replaced it yet) the difference I'm hearing in the sound is unbelievable each board I do.
     
  5. Oscar23

    Oscar23 Member

    Messages:
    76
    I'm back yes been a while well I changed out all the transistors on the power supply and replaced caps took my time double and triple checked leg placement cap part numbers put it on the dbt and 1,2,3 nothing gosh darn again. So I stopped and thought didn't bother posting about it I already knew what zebulon1 would tell me to do go back and check your placements and take your time. So I went back through all leg placements were correct. Check my work all look good so I pulled out my dmm and measured all the pins voltage and bingo pin 11 was at 11v half of what it should be started there and tested continuety found a solder joint not right reflowed it and but it back on the dbt and 1,2,3 click another lesson learned by the mighty 1010
     
  6. zebulon1

    zebulon1 Into Phase Linear's lately Subscriber

    Messages:
    3,719
    Location:
    Las Vegas Nevada
  7. Oscar23

    Oscar23 Member

    Messages:
    76
    Now here's where it gets weird I took it off the dim bulb tester and q5 blew so I replaced it checked all my connections then q6 blew pin 11 now reads -55
     

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