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Yamaha RX S600- no sound

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    Yamaha RX S600- no sound

    I got yAMAHA RS S600 for repair, the problem is it have no sound in dsp mode in direct mode i am geting sound, but when i am playing file from usb i am not geting sound in even direct mode also, so i open and investigate where is the problem, i checked the dac chip when i am touching on DAC chip(PCM1681) i am geting distorted sound, then i checked digital input pins with multimeter which i put in frequency measurement mode, i checked the following pins LRCK, BCK DOUT,,

    LRCK-44.1KHZ measured
    DATA1(pin no -6) alsmost 88.1 khz
    BCK and SCK no reading may be its out of range i dont know what would be the frequency on it,

    then i shorted BCK to ground using a jumber wire for few seconds , after short clear sound but its last long only few seconds , i try this 2 3 times , also i found that when i am touching the ic sound again going ,

    is it problem with this DAC ic or any filter capacitor
    Last edited by srt1; 11-05-2017, 03:23 PM.

    #2
    Re: Yamaha RX S600- no sound

    any one can helpme ? also i found just now when i am touching the pcm1681 i am geting distorted audio also sometimes clear sound for few seconds , i did resolder this ic but no change

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      #3
      Re: Yamaha RX S600- no sound

      i am uplaoding schamtic here this is same rs s600
      Attached Files

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        #4
        Re: Yamaha RX S600- no sound

        Hi.. i replaced PCM1681 now its ok..

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          #5
          Re: Yamaha RX S600- no sound

          Well, good job then! Hou didn’t need any help after all.

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            #6
            Re: Yamaha RX S600- no sound

            Originally posted by koprol View Post
            well, good job then! Hou didn't need any help after all.
            yes....

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