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82-000165 no I/O usb

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  • 82-000165 no I/O usb

    Have a 820-000165 that wont recognize the usb port on the I/O board. I have tried a known a couple good I/O boards and cables. Pins on the board look perfect with no corrosion.

    What to check first??

  • #2
    Check LIO connector from MLB.
    Also check diode mode on data lines (PCH side).
    Be sure resistors, capacitors and TVS diodes are all OK.

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    • #3
      Sounds like corroded pin or broken pin on the J9500 connector inspect closely

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      • #4
        Solved. Bad soldering on replacement J9500

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