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    Part Rec: No Signal

    This is a discussion on Part Rec: No Signal within the Sky+ HD Supertelly forums, part of the Other Sky help and support category; Hi guys. I've been recording every episode of the old but excellent series 'Oz' on CBS Action at 01:00 every ...

    1. #1
      gymno's Avatar
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      Unhappy Part Rec: No Signal

      Hi guys.

      I've been recording every episode of the old but excellent series 'Oz' on CBS Action at 01:00 every weekday.
      (Which along with Breaking Bad is another one i'm disappointed that sky didn't grab for the atlantic channel).

      So far i've watched (in boxset style binges i really look forward to) the first 3 series consisting of 8 episodes each + half of series 4 - another 8 episodes, so 32 in total & all have been fine.
      Today i have episodes 9-13 in my planner but the last two are completely messed up.

      For episode 12 only 17 minutes have been recorded & for last night's episode 13 only 30 minutes.
      Not only should they be 72 minutes long but all the footage that is there is pixellated & totally unwatchable.
      In both cases it's the start of the programme that has been recorded & neither overlapped with another recording.
      What's odd is that for at least some of the time during both recordings i was watching a different channel & had no signal issues.

      I've done a planner rebuild today so will see what happens tonight.
      Has anyone else experienced this kind of problem?


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    3. #2
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      Re: Part Rec: No Signal

      Have you checked the signal level and quality on both inputs?
      If they both appear to be ok try recording CBS Action, change to another channel and while still recording check the signals again.

    4. #3
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      Re: Part Rec: No Signal

      It appears i have a signal quality problem but only on some channels.

      When i checked yesterday on various random channels, strength & quality were fine for both inputs - about 90%.
      Although last night's recording of oz went ok, whilst monitoring it the quality for input 1 was only 25%.
      Looking again today, a few cbs channels are still only 25-30% quality for input 1 whereas other channels are at 90%.

      I'll have a look later to see if there's a common theme regarding the tuning frequencies.
      We've not had any strong winds here lately to disturb the dish so i'm not sure what's going on.

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      Re: Part Rec: No Signal

      Check the plugs/connection of leads going into your Sky box and if ok swap them over to check whether the problem moves to input two.
      If it does then it shows that your box is ok and the problem must be dish, lnb or lead related.

    6. #5
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      Re: Part Rec: No Signal

      Quote Originally Posted by seawright View Post
      Check the plugs/connection of leads going into your Sky box and if ok swap them over to check whether the problem moves to input two.
      If it does then it shows that your box is ok and the problem must be dish, lnb or lead related.
      OK thanks, i'll do that shortly.

      I've just finished going through the chart here:
      Sky UK on Eutelsat 28A & Astra 2E/2F at 28.2E - LyngSat

      The channels with only 25-30% signal quality on input 1 are all in the following frequencies:
      11224 V
      11261 H
      11307 V
      11307 H
      11389 H
      11390 V
      11426 V
      11662 H
      So all bunched together about of the way down.
      No idea what that means.

      *Edit
      After swapping the cables it's still input 1 that's showing the low quality.
      Last edited by gymno; 29-05-15 at 01:16 PM.

    7. #6
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      Re: Part Rec: No Signal

      Quote Originally Posted by gymno View Post
      After swapping the cables it's still input 1 that's showing the low quality.
      Assuming there is no physical damage to the F sockets on the rear of the Sky box it looks like one of the tuners (i/p 1) within your Sky box is failing.

      Can you borrow a Sky box from a friend or relative to confirm this?

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      Re: Part Rec: No Signal

      Quote Originally Posted by seawright View Post
      Assuming there is no physical damage to the F sockets on the rear of the Sky box it looks like one of the tuners (i/p 1) within your Sky box is failing.

      Can you borrow a Sky box from a friend or relative to confirm this?
      Yes i'll give that a go, hopefully this weekend.

      Would a failing tuner usually only struggle with channels on certain frequencies?
      To be clear, it's every channel on the frequencies listed above that show low quality, yet all channels on other frequencies are 90%+.

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      Re: Part Rec: No Signal

      Now i'm really confused.

      Just for a laugh, i went to 'Add Channels' & did a scan on 11.224 V which is one of the problematic ones.
      It found:
      NHK World HD
      RT HD
      MTV Live
      53152
      53153

      I checked NHK World earlier today & it showed 25% quality on input1.
      Anyway, i added 53152 to 'Other Channels' & tuned it in, checked the signal & it was input 2 showing 25% quality with input 1 at 90%.

      And that's how it is for all the other affected channels now - the low quality has switched to input 2.

      Maybe it's a delayed reaction after swapping the cables?
      I did it with the box off at the mains.

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      Re: Part Rec: No Signal

      OK i just tried another test.

      Watching channel 148 CBS action. (problem channel)
      Input 1 quality 90%
      Input 2 quality 25%
      Press record.

      Go to channel 141 BBC 1 HD. (ok channel)
      Input 1 quality 90%
      Input 2 quality 25%

      Go to channel 507 NHK World HD. (problem channel)
      Input 1 quality 25%
      Input 2 quality 25%

      So with input 2 busy recording, input 1 will still drop to 25% when tuned to a problem channel / frequency.
      seawright likes this.

    11. #10
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      Re: Part Rec: No Signal

      Yes that is confusing. The only other thing I can suggest is to switch the box to single input working.
      Then check the signal quality on effected channels with first one feed then the other feed connected to input one.
      Suggest labelling one lead with tape to help keep track while testing.

     

     
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