Question about HP Officejet Pro L7680 All-In-One Printer

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I connect to my HP Officejet Pro L7680 All-in-One Printer the wrong power supply and now dnt swicht on, in the back lights goes green but nothing happens. I have electronics knowledge to fix it but maybe i think is blocked, there is any possibility to do a full reset to it? Thanks very much for your help.

Posted by Anonymous on

  • Anonymous Mar 13, 2011

    Thanks fandui for fast response, the power unit is outside, i have now the correct one, also some lights at the back (the lan connection) goes green like is it ok but the printer dnt goes on, the screen is black and no sound like it is working on it. I open now the board where the power cord goes and i dnt see any fuse or similar... For all of that i think maybe is a protection of the machine...


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Hi live_intheda
I 'm not familiar with the device but isn't it just a question of replacing a burned fuse ?
Is the power transfo inside the unit or is it external together with the connecting power cable ?
Regards ,
fanaudi .

Posted on Mar 13, 2011

  • 2 more comments 
  • fanaudi
    fanaudi Mar 14, 2011

    Hi again live_intheda
    My apologies for the late reply . I think the solution is here : ( starting from solution three ) :

  • fanaudi
    fanaudi Mar 14, 2011

    I mean here :

  • fanaudi
    fanaudi Mar 14, 2011

    Sorry , it won't reproduce the full URL .
    Go to

  • fanaudi
    fanaudi Mar 14, 2011

    I have a problem with the comments . The solution is on HP's Site .


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