Yamaha RX-A700 Receiver No Power, No Standby

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  • jcho47
    New Member
    • Mar 2011
    • 3
    #1

    Yamaha RX-A700 Receiver No Power, No Standby

    Hello everyone,

    I'm having a problem with my Yamaha A700 Receiver. I got this unit from a friend. It does not power on, no lights, no click of the relay, completely dead. I saw some information regarding the poly/film capacitor being a problem with the standby power board on other models. I replaced those caps and it has not made a difference. Fuse checks continuity. I measured the board connector (AC_PWR, DGND, +5.5V, +5.5V, GND, GND, PRY_IN) while powered with my multimeter in AC, values seemed too high. I'm new to repairs, but if anyone has any idea what to check and look for or has any advice. I'd be very appreciative.
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Yamaha RX-A700 Receiver No Power, No Standby

      The +5.5V should be measured on DC.
      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • jcho47
          New Member
          • Mar 2011
          • 3
          #3
          Re: Yamaha RX-A700 Receiver No Power, No Standby

          In that case, I'm reading 0.022 to nothing.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Yamaha RX-A700 Receiver No Power, No Standby

              Where's your black probe going?
              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                Comment

                • jcho47
                  New Member
                  • Mar 2011
                  • 3
                  #5
                  Re: Yamaha RX-A700 Receiver No Power, No Standby

                  To the chassis/shell

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: Yamaha RX-A700 Receiver No Power, No Standby

                      That's not guaranteed to be grounded in an audio amplifier; try using one of the GND pins on that connector you're testing.
                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

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