Announcement

Collapse
No announcement yet.

Hp dv4-5000 wsnu No Backlight

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Hp dv4-5000 wsnu No Backlight

    Good evening! I am working with a hp wsnu main boad rev motherboard. 2.1. Previously it did not turn on, replacing a 30v n channel mosfet according to a data sheet now it turns on But now the problem is that I do not have a backlight, in the lvds 1,2 connector it only activates 3v, I do not have the schematic and I have been guessing the connections .. Any help solving my problem .. Thanks..
    Attached Files

    #2
    Re: Hp dv4-5000 wsnu No Backlight

    Post all markings on the logic board.

    Comment


      #3
      Re: Hp dv4-5000 wsnu No Backlight

      Well, I attach full photos. Thanks
      Attached Files

      Comment


        #4
        Re: Hp dv4-5000 wsnu No Backlight

        According to this webpage:

        https://www.laptopschematic.com/hp-p...agramdiscrete/

        see the reference to logic board # LA-4102P for the HP DV4.

        Based on this detail, see attached. It may match your LVDS connector pinout.

        Check the ground pins and see if there are bridged like the attached for your logic board. Then check the power rails, etc.

        Post your updates.
        Attached Files

        Comment

        Working...
        X