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.
  • 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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