Guidance troubleshooting tuner

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  • daimoku
    Senior Member
    • Feb 2011
    • 85
    #1

    Guidance troubleshooting tuner

    Hey guys, everything is working great on the Insignia NS-LCD32 except for the tuner.

    Could you give some direction on how to troubleshoot the tuner portion of the main board? I posted some ~2000 pixel images of the top and bottom of the main board.

    The tv says it's scanning for channels, but it doesn't pick up any ATSC or digital channels. I have measured the voltages going to the board and they are all correct and stable. I also measured the voltage at LP11 which is located between CP63 and CP43 - it was a constant 5V. Thank you!
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    Last edited by daimoku; 03-31-2011, 11:08 PM.
    Tags: None
    • PCBONEZ
      Grumpy Old Fart
      • Aug 2005
      • 10661
      • USA
      #2
      Re: Guidance troubleshooting tuner

      Check continuity from the antenna jack to the board inside the tuner box.

      Also are you connecting to an OTA antenna or what?
      Mann-Made Global Warming.
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        • PlainBill
          Badcaps Legend
          • Feb 2009
          • 7034
          • USA
          #3
          Re: Guidance troubleshooting tuner

          Also make certain you are scanning for the correct type of signal. I had one where the owner had selected 'Cable', but was connected to an antenna.

          PlainBill
          For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

          Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

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            • daimoku
              Senior Member
              • Feb 2011
              • 85
              #4
              Re: Guidance troubleshooting tuner

              Thanks guys. I borrowed another antenna to try and it worked fine! Go figure!

              Plainbill - Haha I have done that accidentally, but luckily I realized it right away.

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