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Lost Odd Transponders on 103CB and 103CA

Discussion in 'DIRECTV Installation/MDU Discussion' started by Visman, Oct 7, 2013.

  1. Visman

    Visman Legend

    185
    2
    Feb 16, 2008
    Houston, TX
    After a rain storm I noticed that half of the HD channels were saying searching for Satellite 721. When I went to look at the signal strength I notice that all the odd Transponders, of the Sitellite 103ca and 103cb, were at 0. and the evens were in the upper to mid 90s. But here is the strange thing about it, in the heat of the day the odd Transponders come back up and when it starts getting dark they go back to 0. Has anyone had this happen to them, and if so what was the cause of it?
     
  2. HoTat2

    HoTat2 Hall Of Fame

    7,085
    165
    Nov 16, 2005
    Los...
    That's usually due to moisture sipping into a coax or the dish LNB somewhere.

    What type of LNB is on the dish, a SWiM type with a single cable leading from it or a conventional four output one with up to four cables from it?
     
  3. Supramom2000

    Supramom2000 In Loving Memory of Onyx-2/23/09

    3,787
    159
    Jun 20, 2007
    Colbert, WA
    There is another thread where someone had the signal errors every morning and night, but daytime was fine. He got his LNB replaced after the 3rd service call, and all works now.

    I believe they figured moisture in that scenario as well.
     
  4. Visman

    Visman Legend

    185
    2
    Feb 16, 2008
    Houston, TX
    A conventional four output one with up to four cables from it to a multi-switch.
     
  5. HoTat2

    HoTat2 Hall Of Fame

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    165
    Nov 16, 2005
    Los...
    OK;

    Check the cable from the dish to the 13v/22 KHz input of the multiswitch by swapping its connection with any of the three other cables at the switch's input, then when the problem returns see if it moves to another set of transponders.

    If it does the cable or its connectors are bad.

    If it remains on the odd 103ca and cb, you have a bad LNB or multiswtch (if it's mounted outside) which is allowing moisture inside either of them somewhere and must be replaced.
     

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