Syncmaster 225BW Repair

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  • jdfnnl
    New Member
    • Nov 2025
    • 6
    • United States
    #1

    Syncmaster 225BW Repair

    I am working on repairing this Syncmaster 225BW for the second time. I don't remember if the symptoms were the same, but the first repair was replacing the caps of course. This time the monitor turns on for a couple seconds then goes black, but think I can still see a faint image. The power button does not seem to work, it just stays lit. Took out the power / inverter board and the tops of the caps seem completely flat. I do not have intuition about testing with a multimeter so was thinking of just replacing a part. I read somewhere that when the screen is on without being backlit, the inverter could be bad. Found a power / inverter board here, and am wondering if this could be a likely fix.

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    • petehall347
      Badcaps Legend
      • Jan 2015
      • 4444
      • United Kingdom
      #2
      have you got a ccfl tester ?

        Comment

        • jdfnnl
          New Member
          • Nov 2025
          • 6
          • United States
          #3
          I haven't got a ccfl tester but I know the ccfls are good because the monitor has an image for a couple seconds after connecting power. I would guess it is somewhere in the supply of power to the lamps.

            Comment

            • petehall347
              Badcaps Legend
              • Jan 2015
              • 4444
              • United Kingdom
              #4
              the coils went bad on some inverter boards . also those blue caps .inverter receiving power ?

                Comment

                • jdfnnl
                  New Member
                  • Nov 2025
                  • 6
                  • United States
                  #5
                  If the coils have gone bad, would this likely cause the symptom of the screen going black after a couple seconds of power?

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