Westinghouse WD32HN1640-S black screen-no backlight, mainboard TP.MS3393.PB818

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  • alro7779
    Alex
    • May 2025
    • 61
    • Mexico
    #1

    Westinghouse WD32HN1640-S black screen-no backlight, mainboard TP.MS3393.PB818

    Hello, guys!

    I have this Westinghouse 32" LCD TV that turns on, standby led lights up (blue) but no image. If I knock on the screen there's no backlight present. I took the back cover off and injected voltage on the led connector using a Led TV Backlight Tester, and no light at all, so... it must be that there's some bad Leds, right? Or there is some another testing that should I have to do? Any guiding I'll appreciate it very much. Thanks in advance!

    Alex.
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    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12274
      • U.S.
      #2
      Seems so, try the flashlight test if you have not. if you see an image that that's probably further proof of bad leds.

        Comment

        • alro7779
          Alex
          • May 2025
          • 61
          • Mexico
          #3
          Thanks, man! I'll try that.

          EDIT: I did the flashlight test and ... it does show picture! So, the problem is with the Leds.
          I've never bought any TV parts before, though... is there any website for doing so you recommend?

          Thanks in advance!

            Comment

            • nomoresonys
              Badcaps Legend
              • Jan 2013
              • 12274
              • U.S.
              #4
              Try ebay, just be sure to go with one with good feedback. They shouldn't cost much. You want to go by the numbers on the strips to insure a match. I'd tear it down, confirm strip numbers, store in safe low traffic area til strips arrive. If ever in doubt there's some very helpful people here to help you through it.

                Comment

                • nomoresonys
                  Badcaps Legend
                  • Jan 2013
                  • 12274
                  • U.S.
                  #5
                  Can check youtube for how to help, one here, he shows how to test backlights after teardown. He's working on a westinghouse, probably not your same model but doesn't matter for just testing backlights: https://www.youtube.com/watch?v=XFX-NbpMntI

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