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TV will not read incoming cable signal - LG Televison & Video

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  • jrosetto Aug 25, 2010

    LG plasma Model # 42PG20. Not a combo model

  • jrosetto Aug 25, 2010

    HDMI hook up from cable box ia connected. I tried sitching boxes, cables, auto tuning, etc.

  • jrosetto Aug 25, 2010

    HDMI hook up direct from cable box. Switched out cable, cable box, Tested HDMI plugins with DVD.

    Cable shows no signal across screen

  • jrosetto Aug 25, 2010

    WHere does one change "TV on channel 3 or 12 or broadcast air or cable"?

  • jrosetto Aug 25, 2010

    TV will not read the incoming cable signal. HDMI direct hook up from cable box. Changed cables, calbe box, switched HDMI inputs with DVD. HDMI inputs work with DVD but will not read cable signal.

  • jrosetto Aug 29, 2010

    I found out from LG, the plasma TV requires a resolution siganl of 720p or higher. Comcast had lowered the signal out put of the cable box to 480i without notifiying me

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  • LG Master
  • 11,800 Answers

Simple test - plug something else in the HDMI entry of the tv. If you get an image then the cable box is defective - take it to the cable company and ask for a replacement.
If you don't get an image then the fault is inside the tv, on the mainboard - you will have to replace it.

Posted on Aug 25, 2010

  • Azrael SRL Aug 25, 2010

    If the TV works just fine when a dvd is plugged instead of a the cable box then tha cable box is faulty, not the TV. Replace the cable box.

  • Azrael SRL Aug 29, 2010

    In that case either raise the signal resolution yourself or use an analogue connection -  RCA cable. The quality of the image will be lower but you will be able to see it.

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  • Master
  • 1,285 Answers

Is cable live? make sure coaxial cable wire is sticking out at least a 1/4 inch from each cap and is not bent. connect to in on box from wall? cable out from box to TV. is TV on channel 3 or 12 or broadcast air or cable?

Posted on Aug 25, 2010

  • Dvdcdlaser
    Dvdcdlaser Aug 28, 2010

    okay, you are using hd then your tv should either be on source (component or hdmi) not ch 3 .....the 3 colored wires from the cable box out to tv in

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