Replaced 820µF caps on syncmaster 2253BW, backlight still shuts off after 1s

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  • Pierre95
    Senior Member
    • Feb 2016
    • 65
    • France
    #1

    Replaced 820µF caps on syncmaster 2253BW, backlight still shuts off after 1s

    Hello

    I replaced 4 820uF 25V caps which had bulges, but as I didn't have replacement parts, I connected capacitors in parallel: 680uF+100uF which provides 780uF and 470uF+330uF=800uF. However, I don't notice any changes: the backlight still shuts off after 1 second. Is it so much dependant on capacitor values? Or may I replace more capacitors even if they seem OK (no bulges)? I already fixed some displays by only replacing capacitors which looked defective. But this power supply seems to be more tricky.
    Tags: None
    • Dumah Brazorf
      Senior Member
      • Jun 2013
      • 179
      • Italy
      #2
      Re: Replaced 820uF caps on syncmaster 2253BW, backlight still shuts off after 1s

      Could be one or more cfl lamps broken.

        Comment

        • EGuevarae
          Badcaps Legend
          • Nov 2008
          • 1336
          • USA
          #3
          Re: Replaced 820uF caps on syncmaster 2253BW, backlight still shuts off after 1s

          Did you notice a pink hue before it started to shut off, or can you see it the very short time the lamps turn on?
          If that's the case, it is a bad lamp.
          There are 10 kind of people in this world: those that understand binary, and those who don't.
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