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  1. #11
    Junior Member
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    Re: Mx 3140 display not working

    Quote Originally Posted by Hulisani View Post
    I had the same problem and it was the main board, you need to move the SD card and EPROM to the new board
    Paper clip on adf board

  2. #12
    Junior Member
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    Re: Mx 3140 display not working

    I think you should replace the DC power board of the machine with a new one. from my experience it works like magic and hope this will help.
    thanks.

  3. #13
    Senior Tech 100+ Posts
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    May 2010
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    Re: Mx 3140 display not working

    i second the dc power supply. these machines are terrible when it comes to the dc board blowing. I have probably changed out a couple dozen. i have had one be the sd card. if you try to put it in cn mode and it comes up it could be sd card. if the light just blinks with the fans on its the dc board.

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