Yamaha RX-V483 - dead

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  • ponteley
    New Member
    • May 2020
    • 4
    • USA
    #1

    Yamaha RX-V483 - dead

    Yamaha RX-V483 dead. No 5.5V on secondary.
    Tested all fuses, diodes, transistors and caps.
    Unsoldered transformer, - seems to ring trough on all coils. Fuses are OK. Primary DC voltage 160V. I suspect 3A453 IC, but I can't find replacement or substitute anywhere.

    Please help.

    Thank you.




    Last edited by ponteley; 05-20-2020, 06:34 AM.
    Tags: None
    • easy_mike
      New Member
      • Dec 2010
      • 4
      #2
      Re: Yamaha RX-V483 - dead

      Do you have a schematic or service manual?

      - does 3A453 IC get the supply voltage?
      - are there any optocouplers on that board?
      - does the circuit make any sound whatsoever when turned on? Clicks, silent beeps?

        Comment

        • redwire
          Badcaps Legend
          • Dec 2010
          • 3906
          • Canada
          #3
          Re: Yamaha RX-V483 - dead

          OP why did you cross-post pics here and leave us nothing?

            Comment

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