Electronic Circuits and Projects Forum



Amplifier: Sansui 8080db problem. Please help

  1. #1
    bloodthirstypsychotic bloodthirstypsychotic is offline

    Amplifier: Sansui 8080db problem. Please help

    Hello. I have a problem with my amplifier. The dials and meters are working correctly except the amp meter is measuring no output. There is no sound even though my speakers are plugged in. What could have caused this?

    dust.

  2. #2
    gtrdude gtrdude is offline
    Your answer may well exist here:

    http://sound.westhost.com/troubleshooting.htm

    I don't recommend fiddling with the innards of any amp unless you are familiar with the dangers that exist by doing so.
    0

  3. #3
    Agent 009 Agent 009 is offline
    Check your internal circuitry... Maybe there's a misconnection someplace.
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  4. #4
    mozikluv mozikluv is offline

    Re: Amplifier: Sansui 8080db problem. Please help

    Quote Originally Posted by bloodthirstypsychotic
    Hello. I have a problem with my amplifier. The dials and meters are working correctly except the amp meter is measuring no output. There is no sound even though my speakers are plugged in. What could have caused this?

    dust.
    hi,

    you could start checking the output stage first, then the driver stage, the pre-driver stage, the Vbe multiplier and lastly the input stage.

    above recommendation is based on the assumption that you have the schematics of that unit, that you know how to check transistors in-circuit with power on and off state. sounds complicated?

    then my best suggestion is bring it to a competent service/repair shop. :? :wink:
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  5. Thread Starter #5
    bloodthirstypsychotic bloodthirstypsychotic is offline

    thanks guys

    thanks alot. I'll try those suggestions and see if they fix the problem. 8)
    0

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Electronic Circuits  |  Learning Electronics

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