my amplifier has problem!

Discussion in 'General Electronics Chat' started by voduychau, Feb 7, 2007.

  1. voduychau

    Thread Starter Member

    Jan 3, 2007
    19
    0
    it's California amplifier!

    i turn it on 10 minutes,the noise occur(example: ziii....ziiii....ziiii),mixed with audio signal!

    then i turn off the amplifier,and turn on again,it run correctly and no noise occur anymore!

    next time,that status replace :mad:

    i don't know why,please help me!
     
  2. Distort10n

    Active Member

    Dec 25, 2006
    429
    1
    Post a schematic and I can take a look.
     
  3. voduychau

    Thread Starter Member

    Jan 3, 2007
    19
    0
    it's have 2 micro board,1 echo board,1 music board,1 master board and 1 power board

    the schematic is very big and i haven't convert it to PC image,but i think the Power board is very simple and it not damaged because it still run and can play music

    i has replace coupling capacitor,but no effect.

    i think the power contact has problem,it's old and can be damaged
     
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