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Daewoo DLV_32C7SMB Defective backlight

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    #1

    Daewoo DLV_32C7SMB Defective backlight

    Have confirmed that the inverter is putting out juice (connected a small fluro tube from a hand lantern across the output and it lights OK).
    I've never delved into the CCFL tubes of a panel so I decided I've got nothing to lose - it only cost me $25 and if I get it going it will be an OK TV.
    The panel is a type LTA320WT-LF2; a Samsung I gather.
    So how are the tubes wired in these? I gather it must be in series if one tube has taken out the whole lot? Any advice regards what I should be looking for as I dismantle this unit?
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    #2
    Re: Daewoo DLV_32C7SMB Defective backlight

    if that's 32inch then the back probably comes off for parallel backlights.
    only one tube needs to be screwed for the invertor to shutdown.

    got a foto of the invertor?

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      #3
      Re: Daewoo DLV_32C7SMB Defective backlight

      I've stripped the panel from the rest of the hardware, but I've never done one of these before and I think I've come at it the wrong way around. I came aat it from the front and had separated the LCD panel and then the laminations under that and then I could see some sort of diffuser for the lamps. So I've put that all back to avoid contamination of the screen. Is there some secret I'm missing?
      Attached Files

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        #4
        Re: Daewoo DLV_32C7SMB Defective backlight

        on looking at the invertor i'm not sure now
        is the panel edge-lit from the top & bottom?

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          #5
          Re: Daewoo DLV_32C7SMB Defective backlight

          Don't worry STJ. Looks like it's a write off. This panel appears to use tubes that are integrated into a plastic envelope. No access to individual tubes. Picture attached.
          Time to scrap out the useful boards!
          Attached Files

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            #6
            Re: Daewoo DLV_32C7SMB Defective backlight

            i suspect you can strip that.

            why not experiment with 12v led strips - the type that comes on reels!

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              #7
              Re: Daewoo DLV_32C7SMB Defective backlight

              Yes, you are probably right. It would have been a very good experiment. Before I saw your suggestion I'd already stripped it and dumped it. Only so much space in my garage! But if I have the same situation again I think I would give it a go.

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