Samsung 2232GW 23" LCD Monitor Fix - Success

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  • ryankam
    Member
    • Dec 2010
    • 36
    #1

    Samsung 2232GW 23" LCD Monitor Fix - Success

    Customer had a monitor that would power on after several attempts at powering up. Monitor would stay powered up if it was not turned back off. I opened the unit and upon inspection my hunch was correct. Blown caps. Monitor had 3 bulging 25V/820uF samsung capacitors on the power supply. There were a total of 5 of these caps. I replaced 4 of the 5. 3 of which were visibly bulging and one which looked like it was ready to bulge. Replaced the caps with 35V/820uF caps that barely fit due to their height. Assembled monitor, powered up the unit and within several seconds the monitor came to life.

    First Pic: Bad Caps Second Pic: Good Caps
    Attached Files
    Tags: None
    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: Samsung 2232GW 23" LCD Monitor Fix - Success

      Originally posted by ryankam
      Monitor had 3 bulging 25V/820uF samsung capacitors on the power supply. There were a total of 5 of these caps.
      1) Capacitors die from age, heat, and shoddy build quality. Capacitors DO NOT have to be visibly bloated in order to bad. They can be out of tolerance uF (a 1000uF measures 20uF) and/or have high ESR (ohm). A multimeter will be insufficient to test for ESR. For that you need an ESR tester which costs between $50 and $300.

      Most members here will recommend that you replace ALL capacitors with reputable brands from reputable sellers. Brands like Rubycon, Panasonic, and United Chemicon are suggested. A list of recommended caps can be found at

      https://www.badcaps.net/forum/showthread.php?t=2280

      2) Since all the original caps are likely from the same manufacturer and date, most here would have an "guilty by association" mentality. If 3 out of the 8 failed, the others are not likely far behind in failing.
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