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    #1

    Samsung 940BX Help

    A few quick questions for the regular/experts:

    symptom: blue power light on but no backlight.. sometimes monitor comes on but gets noticably longer between intervals

    took it apart and the monitor has a BN44-00123A power board

    visual inspection shows one of the 4 Samxon 1000uF caps is bulging

    Question is will a BN44-00123E board be a direct replacement?

    I do plan on changing the 4 caps... but just in case will the "E" revision board work Ok in this model

    Thanks in advance for any help you can provide...
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    #2
    Re: Samsung 940BX Help

    Originally posted by david7037 View Post
    visual inspection shows one of the 4 Samxon 1000uF caps is bulging

    Question is will a BN44-00123E board be a direct replacement?

    I do plan on changing the 4 caps... but just in case will the "E" revision board work Ok in this model
    I don't know if "E" will work since manufacturers make revisions for a reason, but changing 4 caps on your "A" board should be fairly easy if you have done any soldering before.

    If the Samxon caps are labeled GF, they are a problematic series. Use something like Panasonic FR or FM series for replacements.
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      #3
      Re: Samsung 940BX Help

      They are from the "GF" series

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        #4
        Re: Samsung 940BX Help

        Originally posted by david7037 View Post
        They are from the "GF" series
        Assuming they are 16V 1000uF caps and the dimensions fit (height and diameter), these Panasonic FR would be a good replacement.

        http://search.digikey.com/scripts/Dk...tock=1&x=0&y=0

        Also, don't overlook the other caps like the small startup cap. Little caps don't have to bloat in order to be bad. In fact, most of them don't bloat when bad.
        --- 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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          #5
          Re: Samsung 940BX Help

          Replaced the 4 1000uf caps and monitor is back in action ......Thanks!


          This 940BX uses a older power supply board normally found in a 940BW
          Last edited by david7037; 10-27-2011, 08:18 PM.

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