Help Identifing the fuse

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  • fasner
    Member
    • Sep 2011
    • 15
    #1

    Help Identifing the fuse

    I am trying to get this power supply working again and I need to know if there is a fuse on this circuit board. Can someone help with this or what symbol for the fuse am I looking for. I replaced most of the caps already. Thank you
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    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: Help Identifing the fuse

      Originally posted by fasner
      Can someone help with this or what symbol for the fuse am I looking for.
      This looks like a LCD power/inverter board and thus should be in the display troubleshooting section.

      The fuse is the red circle blob next to the AC input. Fuses are usually marked with a "F" on the PCB. For example, F100. A good fuse should measure less than 1.0 ohms on your multimeter.
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        • fasner
          Member
          • Sep 2011
          • 15
          #3
          Re: Help Identifing the fuse

          Thank you for the response. It is reading .2 ohms. This is the Power PCB for a Samsung Sync Master 914V LCD. I changed most of the caps but still cannot get a good signal on the LCD. It started by losing any screen after about 1 minute. Thought I would strart by swapping out most of the caps--still not video, just straight vertical lines on the LCD.

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            • retiredcaps
              Badcaps Legend
              • Apr 2010
              • 9271
              #4
              Re: Help Identifing the fuse

              .
              --- begin sig file ---

              If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

              We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

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

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                • retiredcaps
                  Badcaps Legend
                  • Apr 2010
                  • 9271
                  #5
                  Re: Help Identifing the fuse

                  Ask the moderators to move this thread to the troubleshooting computer display section so experts like PlainBill, Alexanna, jetadm123 can add their input.

                  If you are not getting video, measure the DC voltage on the voltage regulators on the logic card and measure the DC voltage on the connectors between the logic and power board.

                  Also, keep all your responses and posts/per monitor in ONE thread. Otherwise people will get easily confused and ignore your requests.
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                  We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

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

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