Yamaha RX-A1040 internal error

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  • Tom_x
    Member
    • Aug 2018
    • 32
    • Hungary
    #1

    Yamaha RX-A1040 internal error

    Hi
    I have yamaha rx-a1040 with internal error message, when i plug ac cord.
    In the service menu show No Model Info! The service manual say, if the ic78 eeprom changed or corrupt, need rewrite model name
    Eeprom is renesas R1EX25512ATA00A 512kbit spi eeprom
    I readed eeprom maybe possible to repair....
    I need good dump, or procedure for program model name (i did it with htr2071 by shorting testpoint and set model name), but i can not find info for this avr

    thx
    Tom


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    • R_J
      Badcaps Legend
      • Jun 2012
      • 9567
      • Canada
      #2
      This is for RX-V1077/RX-A1040 Firmware Update Version 1.98
      Maybe this will work, it should reload the firmware from a usb drive
      Attached Files

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        • Tom_x
          Member
          • Aug 2018
          • 32
          • Hungary
          #3
          Thanks, i tried it before, not working bcoz no model info
          First need repair model info

            Comment

            • R_J
              Badcaps Legend
              • Jun 2012
              • 9567
              • Canada
              #4
              When it displays "No Model Info" do ANY of the front buttons change the display to show different model numbers?

                Comment

                • Tom_x
                  Member
                  • Aug 2018
                  • 32
                  • Hungary
                  #5
                  I tried all buttons, combinations, no any reaction,onlyl No Model Info
                  Power button pressing reset the unit and Internal Error message

                    Comment

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