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Carver C11 I have a 20 year old Carver C11 preamp. It works good except it makes a popping noise through the line output when it is on for an while. I believe it is a cap in the line output stage but cannot confirm. I have electronics experience and can do some repairs myself. Any suggestions on how to diagnosis the problem with only a Fluke 87 and no schematic.

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  • Tim Hilgeford Aug 02, 2008

    Two questions: one the popping is a intermittant noise that occurs even with no input, and how do I indentify the tantalum caps, also would they show normal signs of cap damage, such as swelling or leaking.

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Hello,
Try replacing the bead tantalum caps,it should reduce the output noise...but if there are any soldering problems in the hardware and output model im sorry to say you must replace the whole unit..Thank you...

Please post back how things turned on or for further assistance..

Regards!!..

Posted on Aug 02, 2008

  • Natesan Sabesan
    Natesan Sabesan Aug 02, 2008

    well you can get the sound without input, just by connecting it to power rite??...Yeah you can identify them by swelling or improper soldering..But if your not sure then call up a service person or whose experienced in this!!..Thank you...

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Well, I also have some experience in old things.. Please let me know, does it have "rotary or slide switches" for selection of various inputs? if yes, kindly clean them with W-40 Contact Spray. I hope, problem will resolve there n then.

Posted on Aug 02, 2008

  • 2 more comments 
  • Shahid Electronics
    Shahid Electronics Aug 02, 2008

    Hi again,

    one more thing like to tell, please clean/ spray its Record-Switch mounted at circuit board...it would be like....long slide switch.

  • Shahid Electronics
    Shahid Electronics Aug 02, 2008

    What about my suggestions?

  • Shahid Electronics
    Shahid Electronics Aug 03, 2008

    Hello,


    • Any comments on my solution?

  • Shahid Electronics
    Shahid Electronics Aug 15, 2008

    Hi again,

    Do you need further helpful info, let me know please.

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