Sony m851 mbx-217 rev:1.0 at_bradj missing

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  • NConstantinou
    Badcaps Veteran
    • May 2017
    • 334
    • Cyprus
    #1

    Sony m851 mbx-217 rev:1.0 at_bradj missing

    Dear all

    i have the above board power on no display.
    i have all voltages in all coils.
    i am missing AT_BRADJ on U23 pin2 which is an input of AND gate. i have 3.3v on pin 1 and pin5. pin4 is 0v but no short.
    the AT_BRADJ signal is coming from U53 which is LVDS control memory.
    what do you do in such a case!

    Thanks
    Tags: None
    • NConstantinou
      Badcaps Veteran
      • May 2017
      • 334
      • Cyprus
      #2
      Re: Sony m851 mbx-217 rev:1.0 at_bradj missing

      I noticed also INV_EN is missing which is comming from the second i/o vga control memory
      Last edited by NConstantinou; 01-21-2023, 04:02 AM.

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