Projection display radio - some segments not lighting up

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  • jm1234
    Senior Member
    • Jan 2024
    • 68
    • Slovakia
    #1

    Projection display radio - some segments not lighting up

    Hi,
    alarm clock radio Oregon Scientific RRM320P, it projects the time on the seiling.
    Click image for larger version Name: image.png Views: 51 Size: 38.2 KB ID: 3762514
    However only part of the segments is lighting up. Any idea what could be behind this issue?
    Note I'm NOT talking the main display here.
    Tags: None
    • jm1234
      Senior Member
      • Jan 2024
      • 68
      • Slovakia
      #2
      I think it has something to do with this band/cable peeling off of the glass. Manipulating with it I can see the segments going on/off. However, even when pressing on that peeled off part, I was not able to get all the digits displayed.

      Click image for larger version Name: image.png Views: 8 Size: 888.9 KB ID: 3762586 Click image for larger version Name: image.png Views: 13 Size: 888.9 KB ID: 3762587

        Comment

        • jm1234
          Senior Member
          • Jan 2024
          • 68
          • Slovakia
          #3
          What glue is being used for these types of cables? Any chance of undoing and re-gluing it back in properly?

            Comment

            • stj
              Great Sage 齊天大聖
              • Dec 2009
              • 31277
              • Albion
              #4
              is a special conductive glue.
              we had a thread about it years ago when samsung tv's started failing in large numbers.
              there was also a thread at eevblog about the displays in fluke scopemeters.

              i think you can use heat to re-bond it but people did that on the pcb end - probably more difficult on the glass part

                Comment

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