Samsung P2370 Syncmaster, no power

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  • Karthanon
    New Member
    • May 2012
    • 6
    • Canada
    #1

    Samsung P2370 Syncmaster, no power

    Good day, all. Been lurking for a week, trying to figure out what may be wrong with a friends P2370 monitor, but I thought I'd finally ask for assistance.

    It was working fine, until one day last week he turned on his computer and the monitor powered up, but no screen appears - neither a test screen (when no DVI cable is plugged in), nor a screen from my laptop (the Samsung does get detected fine by Win7, and I can clone/extend my desktop to it, but nothing ever appears). The flashlight test doesn't show any picture at all, so it's not just a problem with the backlight (although based on other statements made here that may or may not work all the time)...

    I'm not seeing any issues with caps (ie. bursting/leaking), and the fuse (F301, a 5A Littelfuse if their datasheets are correct) shows okay (a continuity test comes up ok, multimeter set to 200 Ohm comes up with 0, not infinity) from what I can tell.

    What else do I need to check? This monitor has it's transformer external to the monitor on the power brick, so at least it cleans up the guts of the monitor a bit...

    I can tell that 12V is coming across to the inverter section, so it is getting power - I guess I can check if the CCFL's are broken/dead, but that requires ripping apart the monitor even further, eep!

    I will put up some pictures tomorrow, if that's okay.

    Thanks!

    Regards,

    Karth
    Tags: None
    • selldoor
      Slow Learner
      • Dec 2010
      • 7870
      #2
      Re: Samsung P2370 Syncmaster, no power

      Welcome to the forum-
      We can help a lot more if you please post good clear pictures of the whole chassis, and then pictures of each board, front and back and close up of connectors, (max resolution 2000x2000 and 2MB) using the manage attachments button, which is found by clicking "go advanced" under quick reply.

      Please do not post inline and offsite as they slow down the loading of pages.

      Examples of what is needed
      https://www.badcaps.net/forum/attach...1&d=1290283049

      https://www.badcaps.net/forum/attach...7&d=1280167246

      It will be useful if you can say a bit about yourself - skills tools etc.
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • Rtech
          Badcaps Legend
          • Jul 2010
          • 1095
          #3
          Re: Samsung P2370 Syncmaster, no power

          On the inverter input plug ,where you measured the 12v power,there is always a ground, and normally two more inputs ,,one for Dim/Bri/Adjust, and one which should switch the inverter on WHEN a signal is present from the PC,this should be in in the order of 2-4 volts DC,so you can measure that as well,and if it is there,When the PC signal is ON, then the problem is definitely the Inverter Board OR the backlights,the latter you can eliminate by using good test ones if you have them

            Comment

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870
              #4
              Re: Samsung P2370 Syncmaster, no power

              Did you try reseating the cable to the panel -lvds - both ends. If it is a flat cable clean the ends as well.
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

                Comment

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