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  1. #1
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    MX4141N TouchScreen Black, green LED Flashing on Op Panel

    Normally the green LED will light solid and stop blinking when power is turned on, but the green LED on the control panel keep flashing (forever), the touchscreen stays dark, and the fans are running.

    I replaced MFPC (including the little piggy back PCB with the memory and firmware, these are only on the 4141/5141 models) , HDD, and op panel.

    Any help on this would be awesome!

    Seen similar posts with same problem but different model, so sorry if this is a repeat.

    Last edited by buzz; 2 Weeks Ago at 11:26 PM.

  2. #2
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    Re: MX4141N TouchScrees Black, green LED Flashing on Op Panel

    HI have you tried replacing the sd card as sometimes sd card get corrupted can cause the fault as the machine boots from the sd card.


  3. #3
    Trusted Tech 50+ Posts moose55's Avatar
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    Re: MX4141N TouchScrees Black, green LED Flashing on Op Panel

    Try reseating the mother PWB first. It is an easy attempt. I have had their connection to the MFP PWB and PCU PWB become somewhat flakey sometimes. If that doesn't do it, then yeah, it's your SD card.

    The Moose is loose!!

  4. #4
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    Re: MX4141N TouchScreen Black, green LED Flashing on Op Panel

    Quote Originally Posted by buzz View Post
    Normally the green LED will light solid and stop blinking when power is turned on, but the green LED on the control panel keep flashing (forever), the touchscreen stays dark, and the fans are running.

    I replaced MFPC (including the little piggy back PCB with the memory and firmware, these are only on the 4141/5141 models) , HDD, and op panel.

    Any help on this would be awesome!

    Seen similar posts with same problem but different model, so sorry if this is a repeat.
    if you replace the sd card and reconnecet the controller dosent work. Replace the PSU.

    Nothing is impossible for them who should not do it.

  5. #5
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    Re: MX4141N TouchScrees Black, green LED Flashing on Op Panel

    Thank you all!
    SD was it!
    Touchscreen comes on and machine comes to ready state, but now there's no drive to the registration motor.
    Troubleshooting now.

    Last edited by buzz; 1 Week Ago at 07:34 PM.

  6. #6
    Trusted Tech 50+ Posts moose55's Avatar
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    Re: MX4141N TouchScrees Black, green LED Flashing on Op Panel

    Quote Originally Posted by buzz View Post
    Thank you all!
    SD was it!
    Touchscreen comes on and machine comes to ready state, but now there's no drive to the registration motor.
    Troubleshooting now.
    Try a COMPLETE firmware rewrite.

    The Moose is loose!!

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