Arcam AVR400 No sound

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  • nodols
    Member
    • Jan 2023
    • 24
    • Canada

    #1

    Arcam AVR400 No sound

    Bought an Arcam AVR400 FMJ with no sound and no VFD display. I've plugged in to TV and it has display.

    I've checked the VFD and it's toast, I don't know where to source it so if anybody has suggestions please let me know.

    However, the main issue really is the No Sound to speakers.

    I have connected a signal generator to the RCA CD input, and signal stops at the IC101 Renesas R2A15218FP IC. -7V and +7V power supply is there. On this IC101, mute is on pin 51, Clock on pin 50, and Data on pin 49.

    Pin 51 - mute is logic low (no voltage) so I'm guessing this is not a muting issue.

    Pin 50 clock - and Pin 49 data - however is a different issue. I don't get any signal on them, I tried scoping them on an older analog scope, and nothing.

    Anybody has any idea if it's the IC itself or should I look somewhere else?

    I have crossposted this on another forum, hoping to get more expert's opinion.

    Thanks.
    Last edited by nodols; 01-11-2023, 09:57 AM.
  • nodols
    Member
    • Jan 2023
    • 24
    • Canada

    #2
    Re: Arcam AVR400 No sound

    Managed to find the fault. It's the Codec IC that's faulty.
    Receiver is getting power now.

    Would have loved to get a replacement VFD, but this seems like a dead-end.

    I'm actually loving the sound this receiver gives, pretty clear mids and highs.
    Bass could be improved but overall pretty nice sounding receiver.

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