My Humax Forum » Freesat HD » FOXSAT HDR

Some channels scrambled

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    shaptoni

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    Hi
    using box for a few years, no issues
    last few days the kids channels, things like tiny pop are scrambled
    signal strength is 85%, try full reset and rescan but cannot get them
    does anyone have any ideas?
    thanks

    | Wed 12 Oct 2011 19:34:08 #1 |
  2. grahamlthompson

    grahamlthompson

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    What is your quality reading ?. Which box is it ?. If Satellite tune to one of the affected channels and use Menu/System/Diagnostics to find the quality. Could be a number of reasons (water in the dish coax cables for instance, lnb failure, local source of interference etc)

    | Wed 12 Oct 2011 20:51:11 #2 |
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    shaptoni

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    Thanks for response, you are correct
    the signal strengh is high (85%+) but the quality is low <40%

    All the standard terrestrial stations are fine, it is just dance, kids and other genres no-one really watches - but my children like kids tv

    so, no water has got near the TV and no other devices have been introduced, from what you say it could be an lnb failure
    what does this mean and how do i resolve?

    thanks

    | Sat 15 Oct 2011 12:46:13 #3 |
  4. grahamlthompson

    grahamlthompson

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    Confused, A lnb is required for satellite reception, yet you mention terestrial stations. If you post which Humax pvr you are referring to it would greatly help in sorting out your problem.

    | Sat 15 Oct 2011 12:51:11 #4 |
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    shaptoni

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    thanks for persevering with this
    i have a Humax Foxsat 320GB HD Freesat Digital TV Recorder, couple of years old
    there are 2 lnb cables running from the dish
    BBC 1-4, ITV 1-4 Ch4 (not HD), E4 etc are all showing strength 85% quality 80% (approx)
    The kids, music, Ch4 HD are all showing strength 80% quality 30% (approx)
    not sure why the quality is low on only these channels but this is the problem
    thanks

    | Sun 16 Oct 2011 13:03:31 #5 |
  6. grahamlthompson

    grahamlthompson

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    It most likely down to a dish alignment issue.

    Download either the Excel or HTM version of the files shown here.

    http://myhumax.org/forum/topic/what-can-i-record-and-watch-using-1-or-2-cables

    This shows all the Freesat epg channels, the transponder they use (its frequency and polarisation Horizontal/Vertical) and the individual satellite. Tune to one channel in turn from each transponder and look at the signal readings. You are looking for a common link. In your case it's most likely to be that all the problem channels are on Eurobird 1 at 28.5E rather than one of the Astra 2 satellites at 28.2E. You may well also find that horizontal transponders are worse than vertical ones or vice versa. If so the dish azimuth alignment may need a tiny nudge more easterly and the lnb skew (twist) needs tweaking.

    CH4-HD in particular has proved awkward for those with dishes set up to favour 28.2E over 28.5E. See this link

    http://www.stevelarkins.freeuk.com/channel4-hd-no-signal.htm

    Good luck

    | Sun 16 Oct 2011 14:02:50 #6 |
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    shaptoni

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    thanks graham, now to find a long ladder.....

    | Sun 16 Oct 2011 16:59:44 #7 |

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