A Problem in Audio Amplifier

Discussion in 'General Electronics Chat' started by Doloop, Feb 13, 2015.

  1. Doloop

    Thread Starter New Member

    Feb 5, 2015
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    0
    Hi
    I have a Audio Amplifier Model Jas 4000
    this Amplifier have two output but have a output problem Signal.
     
  2. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    Hi
    I have a Audio Amplifier Model Onkyo A-5
    this Amplifier have two output but have a "on" light problem
    Tomato
     
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  3. ScottWang

    Moderator

    Aug 23, 2012
    4,854
    767
    Could you buy some instant noodles for me? ... :D
     
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  4. Doloop

    Thread Starter New Member

    Feb 5, 2015
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    0
    do not joke:D
    can help me someone
    I can not speak very best to english
     
  5. ScottWang

    Moderator

    Aug 23, 2012
    4,854
    767
    Nobody kidding for your english, my english also not so good, if you still don't understand what's going on, that's the feeling what we thought about your post, because not enough infos.
     
  6. MrChips

    Moderator

    Oct 2, 2009
    12,440
    3,361
    Is it only English speaking people that can fix audio amplifiers?
     
  7. Doloop

    Thread Starter New Member

    Feb 5, 2015
    10
    0
    hi
    ok
    I do not know where you're going bad:)
    I did not bother ;)
    You can get a good source for fix audio amplifiers ? tnks

    Sorry I can not speak better than this :Dtnks
     
  8. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Doloop likes this.
  9. tcmtech

    Well-Known Member

    Nov 4, 2013
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    Try posting in your native language. Many people here can speak and read multiple languages. (but not me.) :p
     
  10. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    ONLY english is allowed over here.
    Do not ask to post in other languages.

    Bertus
     
  11. Doloop

    Thread Starter New Member

    Feb 5, 2015
    10
    0
    hello
    my native language is persian.
    Surely someone here knows persian.:D

    ok
    Thank you to guide you;)
     
  12. bertus

    Administrator

    Apr 5, 2008
    15,648
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    Hello,

    My native language is Dutch.
    I do not think you could read it either.

    Bertus
     
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  13. ian field

    Distinguished Member

    Oct 27, 2012
    4,415
    783
    Tomatoes are always a bad thing for amplifiers!
     
  14. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Can you describe the fault condition of the amplifier?
    Is one or are both channels not working?
    Is there a fault indicator?
    Is there any documentation of the amplifier?

    Bertus
     
  15. ian field

    Distinguished Member

    Oct 27, 2012
    4,415
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    Didn't Persia change its name decades ago? - maybe that's the cause of confusion.
     
  16. Doloop

    Thread Starter New Member

    Feb 5, 2015
    10
    0
    It is hard to describe the English language for me...
    But the choice is not:oops:
    this is Mixer & Amplifire
    has two output
    each output 300w
    one output it is ok and has Audio signal in output
    but one of the outputs has not Audio signal ...
    I to use multimeter measured transistors Voltages
    no Voltage any Transistor
    I think the true power transistors work And the problem of the control Signal.:confused:

    tnks.
     
  17. Doloop

    Thread Starter New Member

    Feb 5, 2015
    10
    0
    did you mean Change Doloop Name?
    I Love This Name...;)
     
  18. cmartinez

    AAC Fanatic!

    Jan 17, 2007
    3,572
    2,537
    Unless of course, what you want is a really loud tomato...
     
  19. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,387
    497
    all we need now is zoot suit riot.
     
  20. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    When one channel is working and one not, you can compare voltages between them.

    Is it possible to post some sharp photos from the PCB?

    Bertus
     
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