pioneer vsx 2021 no sound

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  • Nufus
    replied
    Re: pioneer vsx 2021 no sound

    No sound in all channel and tuner searching station but can not find AM FM stations . I bought a damaged secondhand.
    When I will be service manual I will try to fix it.

    Leave a comment:


  • srt1
    replied
    Re: pioneer vsx 2021 no sound

    Originally posted by Nufus
    Hello.
    I have the same pioneer vsx 2021 and damage.
    Do you remember which elements you replace?
    I can not find service manual vsx2021. You use service manual similar type pioneer?
    what is the damage? no sound? yes i have service manual.i will upload here

    Leave a comment:


  • Nufus
    replied
    Re: pioneer vsx 2021 no sound

    Hello.
    I have the same pioneer vsx 2021 and damage.
    Do you remember which elements you replace?
    I can not find service manual vsx2021. You use service manual similar type pioneer?

    Leave a comment:


  • srt1
    replied
    Re: pioneer vsx 2021 no sound

    I dont have scope. only have digital multi meter but in that i can measure i2s audio signal and 44.1khs sampling frequency. i measured these signals on DAC ic chip. then i by passed main clock out from DIR ic chip to DAC ic chip then i got sound. so i check in schematic i found that there is buffer ic in between . this ic chip do not producing output clock signal due to regulator failure.

    Leave a comment:


  • mmartell
    replied
    Re: pioneer vsx 2021 no sound

    Great ! How did you check for missing clock signal, scope ?

    Leave a comment:


  • srt1
    replied
    Re: pioneer vsx 2021 no sound

    Yes you are right i check every signals. i found that Main clock signal is missing for DAC ic chip and DSPchip. clock signal lost due to one regulator ic Bad its show only 1.3 volt as per schematic it should be 3.3Volt then i by passed 3.3volt from another regulator ic now i am getting sound

    Leave a comment:


  • mmartell
    replied
    Re: pioneer vsx 2021 no sound

    HDMI boards are pretty complex. Check regulators and ic's for voltage.

    Leave a comment:


  • srt1
    replied
    Re: pioneer vsx 2021 no sound

    I think so.. any one can help me to fix it?

    Leave a comment:


  • mmartell
    replied
    Re: pioneer vsx 2021 no sound

    Likely a problem on the hdmi board.

    Leave a comment:


  • srt1
    started a topic pioneer vsx 2021 no sound

    pioneer vsx 2021 no sound

    Hi,

    i got a pioneer vsx 2021 , it is secondhand item, everything is working except sound, ther is no sound in all channel. but i can get sound in if it put in pure direct mode. only front left and right channel. is it bad cap problem?

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