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Samsung Syncmaster 203b no back light after cap replacement

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    #1

    Samsung Syncmaster 203b no back light after cap replacement

    i picked this item up locally for free. when i first plugged in to see whats happening, the blue power light blinked on and off continuously and no display no image dead! took item apart and found 3 bulged caps. 3 x 820uf/25 volt replaced with spares i had 3 x 1000uf / 25 volt. item back together now blue power light powers on stays on NO back light. i can see image with flash light. there is no 2 seconds to dark when powered on no back light activity. directions??
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    #2
    Re: Samsung Syncmaster 203b no back light after cap replacement

    not sure what happened to that photo upload?
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      #3
      Re: Samsung Syncmaster 203b no back light after cap replacement

      Originally posted by starmaxpc View Post
      NO back light.
      1) Check fuse F301. A good fuse should measure less than 1.0 ohms.

      2) Check the 2 mosfets that are sandwiched in between the two transformers for shorts.
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        #4
        Re: Samsung Syncmaster 203b no back light after cap replacement

        Your photo's a little blurry, but try checking the fuse, PF301? It's the green fuse between the heatsink and the inverter transformer on the left side of your photo.

        retiredcaps already beat me to it!

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          #5
          Re: Samsung Syncmaster 203b no back light after cap replacement

          Thanks gentlemen!! the fuse was bad. it is now working good!!

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            #6
            Re: Samsung Syncmaster 203b no back light after cap replacement

            Thx i fixed 2 of those screen with 4 bad caps and bad fuse!!

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