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'No Signal' on satellite channels : New cable

  • 03-09-2016 06:57PM
    #1
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭


    Hi,
    A friend got an extension and the builder put in a tv socket and left a line of coax in the attic.

    I was trying to sort it out for him but could only get the Saorview channels in the extension.

    Basically what I did was:
    Took his existing saorview and satellite cables in another room which I tested were working ok.
    Used a combiner and connected the 2 cables to the cable the builder left.
    Used a splitter in the extension to connect to combo box.

    Saorview is perfect but no satellite. Anyone any ideas what it could be?

    All I can think of was that the cable was very long but would this just give a bad picture as opposed to no signal and if this why is saorview ok?

    I've done similar in my own house with splitters etc. with no issues.

    Thanks in advance.


Comments

  • #2
    Thurston?
    Closed Accounts Posts: 2,278 ✭✭✭Thurston?


    What kind of socket is fitted? Is it one with internal components to electrically isolate connected equipment, thus blocking the power to the LNB?

    If that's the case, you'd need to remove its 'guts', & just pull the cable through, or replace it with something suitable for satellite reception if you want to keep it as an actual socket.


  • #3
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭muloc


    Thurston? wrote: »
    What kind of socket is fitted? Is it one with internal components to electrically isolate connected equipment, thus blocking the power to the LNB?

    If that's the case, you'd need to remove its 'guts', & just pull the cable through, or replace it with something suitable for satellite reception if you want to keep it as an actual socket.

    I haven't a pic but looked like standard TV wall socket to me. Are some of them only for saorview signal?


  • #4
    Thurston?
    Closed Accounts Posts: 2,278 ✭✭✭Thurston?


    If it doesn't pass DC power, it's no use for satellite. Even if isolating components aren't present, those 'Belling-Lee' type connectors wouldn't be the best for satellite use, & lack of power passing could be down to how the connectors on the cable have been fitted.

    You could pull the cable through, or make a plate with a female/female f-connector joiner. (Backbox depth permitting.) Off-the -shelf plates are also available with the satellite/terrestrial diplexer included.


  • #5
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭muloc


    Thurston? wrote: »
    If it doesn't pass DC power, it's no use for satellite. Even if isolating components aren't present, those 'Belling-Lee' type connectors wouldn't be the best for satellite use, & lack of power passing could be down to how the connectors on the cable have been fitted.

    You could pull the cable through, or make a plate with a female/female f-connector joiner. (Backbox depth permitting.) Off-the -shelf plates are also available with the satellite/terrestrial diplexer included.

    When you say doesn't pass DC power you mean have a plug? as nothing in my house has a plug and works ok


  • #6
    The Cush
    Registered Users, Registered Users 2 Posts: 15,978 ✭✭✭✭The Cush


    muloc wrote: »
    When you say doesn't pass DC power you mean have a plug? as nothing in my house has a plug and works ok

    On certain TV wallplates, some have decoupling capacitors at the rear which would prevent DC voltage getting to the LNB from the satellite receiver but will allow RF signal to get through, like Saorview.

    A single cable feed diplexer wallplate or triplexer wallplate (like the one Thurston linked to above) could resolve the issue if the existing one is at fault here.

    A pic of the rear of the faceplate would maybe help identify the problem.


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  • #7
    Thurston?
    Closed Accounts Posts: 2,278 ✭✭✭Thurston?


    muloc wrote: »
    When you say doesn't pass DC power you mean have a plug?

    The satellite receiver powers the LNB on the dish. DC (direct current) in the range of about 13 - 18 volts is carried on the coaxial cable, & you can't have anything blocking this between the receiver & LNB, so the correct wall plates, diplexers etc. must be used.


  • #8
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭muloc


    Cheers all. I'll get a proper look at it later on.


  • #9
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭muloc


    Pics attached. Tried just connecting the coax on socket to splitter and then box but no joy...still only getting saorview.


  • #10
    STB.
    Registered Users, Registered Users 2 Posts: 5,380 ✭✭✭STB.


    So you have combined the satellite and terrestrial into one cable.

    And then I see a picture of terrestrial TV wall plate.

    Wheres the splitter (ie combiner in reverse) to split it back into 2 again.


  • #11
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭muloc


    STB. wrote: »
    So you have combined the satellite and terrestrial into one cable.

    And then I see a picture of terrestrial TV wall plate.

    Wheres the splitter (ie combiner in reverse) to split it back into 2 again.

    Not in pic but yeah cable in pic goes into splitter and then into combo box.

    I have combined aerial and satellite in attic - cable in pic coming from attic combiner.


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  • #12
    STB.
    Registered Users, Registered Users 2 Posts: 5,380 ✭✭✭STB.


    muloc wrote: »
    Not in pic but yeah cable in pic goes into splitter and then into combo box.

    I have combined aerial and satellite in attic - cable in pic coming from attic combiner.

    Show me a picture of these splitter you are using. Is it the same as the combiner in the attic.

    I assume you have the satellite cable connected to the proper combiner leg (the 950-2400MHZ one with power pass) and likewise at the other end.

    How long is this cable run ?

    What combo box are you using and is the lnb power turned on ? Does the box have an option for increased voltage in the menu ?


  • #13
    The Cush
    Registered Users, Registered Users 2 Posts: 15,978 ✭✭✭✭The Cush


    muloc wrote: »
    Pics attached. Tried just connecting the coax on socket to splitter and then box but no joy...still only getting saorview.

    In the third pic, can you screw the green plate off the faceplate to see if there is a capacitor behind. The diplexer or triplexer (linked above) would be a better solution as it eliminates the requirement for a separate splitter at the TV point


  • #14
    Gerry Wicklow
    Registered Users, Registered Users 2 Posts: 4,572 ✭✭✭Gerry Wicklow


    Looking at the 3rd pic I would say there is a cap on the RHS between coax and pin.


  • #15
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭muloc


    STB. wrote: »
    Show me a picture of these splitter you are using. Is it the same as the combiner in the attic.

    I assume you have the satellite cable connected to the proper combiner leg (the 950-2400MHZ one with power pass) and likewise at the other end.

    How long is this cable run ?

    What combo box are you using and is the lnb power turned on ? Does the box have an option for increased voltage in the menu ?

    Hi STB,
    This is the one - yes same as one in attic.
    http://www.freetv.ie/tv-aerial-and-satellite-combiner.html

    Defo connected to proper leg.

    Cable length hard to tell but about twice length of one that is working...maybe 30ft

    Box is Ariva 150. LNB power turned on? What do you mean by this exactly?

    Don't know about option for increased voltage as the box is in friends house so can't check at minute.

    Thanks.


  • #16
    STB.
    Registered Users, Registered Users 2 Posts: 5,380 ✭✭✭STB.


    Well you shouldn't be having any issues with 30ft of cable even with the loss of using a combiner and a splitter. Is that the total run from the dish to the extension ?

    You need to check all the connections in and out. Finally that wall plate is of no use. Its a terrestrial TV output only. Try connecting the cable coming out of the wall to the splitter directly, ie not after the wall plate.

    You can get a wall plate that will eliminate using the same splitter in reverse like this.

    http://www.freetv.ie/diplexer-wall-plate.html


  • #17
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,421 ✭✭✭DublinDilbert


    Can you post a picture of the satellite splitter/combiner which you used?

    You need to use a proper diplexer and not a simple splitter.


  • #18
    The Cush
    Registered Users, Registered Users 2 Posts: 15,978 ✭✭✭✭The Cush


    DublinDilbert wrote: »
    Can you post a picture of the satellite splitter/combiner which you used?

    See post #15.


  • #19
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭muloc


    DublinDilbert wrote: »
    Can you post a picture of the satellite splitter/combiner which you used?

    You need to use a proper diplexer and not a simple splitter.

    this one
    http://www.freetv.ie/tv-aerial-and-s...-combiner.html

    I haven't got back over since but the only thing I can think of causing it is the splitter


  • #20
    Johnboy1951
    Registered Users, Registered Users 2 Posts: 14,076 ✭✭✭✭Johnboy1951


    muloc wrote: »
    this one
    http://www.freetv.ie/tv-aerial-and-s...-combiner.html

    I haven't got back over since but the only thing I can think of causing it is the splitter

    404 - Page not found :(

    Maybe this one?
    http://www.freetv.ie/tv-aerial-and-satellite-combiner.html

    Dunno why your link would not work for me


  • #21
    The Cush
    Registered Users, Registered Users 2 Posts: 15,978 ✭✭✭✭The Cush


    muloc wrote: »
    I haven't got back over since but the only thing I can think of causing it is the splitter

    Have you ruled out the wallplate?


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  • #22
    muloc
    Registered Users, Registered Users 2 Posts: 520 ✭✭✭muloc


    The Cush wrote: »
    Have you ruled out the wallplate?

    I did disconnect the coax from the wallplate and connected straight to splitter then to box...saorview fine....no satellite.....could be just a bogey splitter as I have the same type in my own house. Next time I'm over I'll bring one of my own that I know is working


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