YAMAHA C4 phono capacitance

Discussion in 'Yamaha' started by Edu1985, Mar 20, 2017.

  1. Edu1985

    Edu1985 New Member

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    Hello everybody!i recently purchased a Yamaha c4 which I love for it s phono section but I have encountered a little problem:when switching the capacitance loading I can t hear any modification in the sound.the kohm loading works perfectly but in the capacitance i can t tell any difference at all .I m using it with a audio tehnica at 91e.it could be the cartridge to blaim?i had another c4 a few years ago and used it with nagaoka and shure cartridges and i renemeber that the capacitance was making differences in sound but with this yamaha...nothing in the capacitance department.so ..any ideas?I 've checked the board for bad solder and cleaned all switches with contact cleaner.could it be from somewhere else the problem in capacitance?
     
  2. avionic

    avionic " Black Knights" Subscriber

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    Did you disassemble the load switches ? If not, there not clean.
     
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  3. avionic

    avionic " Black Knights" Subscriber

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    Almost impossible to get clean without disassembly.
     
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  4. Edu1985

    Edu1985 New Member

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    Thanks for the reply,Avionic.no,I did not disassembled the loading switch.it looks like a lot of work to do this.maybe i could do this without desoldering the switch from the board.hmmm
     
  5. avionic

    avionic " Black Knights" Subscriber

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    Sorry Charlie.. Thats a fantasy. The switch needs to be removed and disassembled.
     
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  6. Edu1985

    Edu1985 New Member

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    Aside from the switch being dirty could it be something else?
     
  7. avionic

    avionic " Black Knights" Subscriber

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    The switch would be my primary suspect.
     
  8. avionic

    avionic " Black Knights" Subscriber

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  9. avionic

    avionic " Black Knights" Subscriber

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    Also post #147...
     
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  10. Edu1985

    Edu1985 New Member

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    I understand...I will see what can I do.the rest of the switches and pots work very good.
     
  11. Edu1985

    Edu1985 New Member

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    I have checked the switch without taking it down the board with the multimeter on beep function and it beeps on all the settings in both chanells.So the switch looks good.if the other switches were making same problems it could be the switch but all others work well so it could not be an isolated case.any ideas what to check next?
     
  12. Edu1985

    Edu1985 New Member

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    Solved!i redid the solder points of the switch.now works perfectly!
     
  13. avionic

    avionic " Black Knights" Subscriber

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    Got lucky..
     
  14. Edu1985

    Edu1985 New Member

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    Yepp...so happy...listening to vinyl.i will have to replace all caps in the near future.
     
  15. Mr. Yamaha

    Mr. Yamaha Yamaha Junkie Subscriber

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    I won't replace all caps if I were you, just the lytics :thumbsup:
     
  16. Edu1985

    Edu1985 New Member

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    Yes ,to the electrolytics i was reffering.but for now it sounds pretty darn good for almost 40 years old!
     

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