Yamaha RX A-1030

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  • Smoothjazz
    Member
    • Feb 2017
    • 13
    • United States
    #1

    Yamaha RX A-1030

    Hello everyone,
    I am a newbie to this forum.I have a Yamaha HTR that is in protect mode
    ( figure that).I am getting the DS1 message having bypassed the protection
    mode state.Since the unit wont power up, is there a way to isolate the bad
    amp board ( opened up unit and I see 2 large heatsinks holding 8 transistors)
    One on the left, one on the right.Trying to elimate having to test all 16
    transistors in this unit. I looked inside and I really cant tell if there is a way
    to disconnect the amp boards from the power supply board.
    Tags: None
    • madan1
      Badcaps Veteran
      • Nov 2016
      • 682
      • Bulgaria
      #2
      Re: Yamaha RX A-1030

      refer to the service manual for disassembly instructions

        Comment

        • Smoothjazz
          Member
          • Feb 2017
          • 13
          • United States
          #3
          Re: Yamaha RX A-1030

          Cool..thanks !!

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Yamaha RX A-1030

              Check for DC offset of each power amplifier output that go to the speaker protection relays.
              Never stop learning
              Basic LCD TV and Monitor troubleshooting guides.
              http://www.badcaps.net/forum/showthr...956#post305956

              Voltage Regulator (LDO) testing:
              http://www.badcaps.net/forum/showthr...999#post300999

              Inverter testing using old CFL:
              http://www.badcaps.net/forum/showthr...er+testing+cfl

              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
              http://s807.photobucket.com/user/budm/library/

              TV Factory reset codes listing:
              http://www.badcaps.net/forum/showthread.php?t=24809

                Comment

                • Smoothjazz
                  Member
                  • Feb 2017
                  • 13
                  • United States
                  #5
                  Re: Yamaha RX A-1030

                  Since the unit is in protect mode, how can I test dc voltage when the unit wont stay on long
                  enough for me to get readings on transistors, diodes, resistors? Am I missing something here?
                  Last edited by Smoothjazz; 02-21-2017, 05:11 AM.

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