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Losing a local channel through the 612

Discussion in 'ViP612/622/722/722K DVR Support Forum' started by ozarkham, Feb 10, 2009.

  1. ozarkham

    ozarkham Cool Member

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    Sep 20, 2008
    I have a 612 receiver and live in the Springfield, MO local market. When I tune my 612 to local channels 021-1, 021-2 or 021-3 they all show 90% signal for about 3 seconds and then drop to zero. I do not have this problem with the other local digital channels and if I switch to view the channels directly from my HDTV tuner (same antenna) or from another TV with a converter box with rabbit ears the 21 stations stay at a strong signal. I called E* and they concluded that my TV tuner is better then the tuner in the 612. Anyone else experiencing this? :confused:
     
  2. jalexand

    jalexand Cool Member

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    Feb 7, 2009
    Yes I am having that same exact issue. I can pick up all the channels just fine with my TV but when I have the antenna connected to my ViP 612 I get the same results as you do. I don't have a clue how to fix it. I've tried every combination of amp's and connections that I can think of.

    jason
     
  3. harsh

    harsh Beware the Attack Basset

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    Jun 14, 2003
    Salem, OR
    Have you tried re-scanning the channels? Perhaps the station in question has already transitioned to a new frequency.
     
  4. dennispap

    dennispap Icon

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    Feb 1, 2007
    Before you rescan. Remove all of the old channels.Then rescan.
     
  5. kstevens

    kstevens Icon

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    Mar 26, 2003
    I've tried this a number of times. I've even called dish tech support and have not been able to get this resolved. I can watch the same channels on my 211k in my bedroom with no drop outs at all.


    Ken
     
  6. ozarkham

    ozarkham Cool Member

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    Sep 20, 2008
    Yes. I've deleted all and then added them back. No change. I knew I was in trouble with tech support when they told me the Springfield market was not digital. This was after I said the problem was with 021-1, 021-2, 021-3 which are clearly digital channels.
     
  7. Ron Barry

    Ron Barry 622 Tips & Trick Keeper

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    Dec 10, 2002
    Have these channels ever worked? Kstevens and jalexand. Are you guys referring to the same channel? I see two possibilities.

    #1 - Multipathing. What you describes sounds like what 622/722 receivers do when they run into a multi-pathing issue.
    #2 - Something in the PSIP stream that the 612 does not like.

    Oh.. as for the scanning. what I would suggest.

    Disconnect your OTA.
    Delete all OTA channels
    Exit out of your local HD screen. All the way back to the picture.
    Go back to your OTA screen. Do a scan to make sure nothing shows up.
    Exit out of your local HD screen. All the way back to the picture.
    Reconnect your OTA.
    Go back to your OTA screen. Do a scan.

    If it still does not help. I would suspect #1 or #2. OTA is an art. Just because one configuration works will not result in another one working.

    The other thing I would suggest. Go to your local HD area at AVSForum and see if anyone else is experiencing issues with this channel in particular. Might provide clues or more evidence if you need to contact the local station.
     
  8. boylehome

    boylehome Hall Of Fame/Supporter

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    Jul 16, 2004
    If you guys are having the issue with the same channel, then most likely there is a corrupted stream of data. Did the TV station recently change channels or change to a different transmitter? Call the station and let them know that only their channel is the problem. Generally the engineers will check for the problem and might even find and correct it! one thing is true, not all ATSC tuners are equal and the ViP612 is not as good as others. However the tuner is set to standards and should work properly if problems like multi-path are removed.
     
  9. kstevens

    kstevens Icon

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    Mar 26, 2003
    I'm in a different market in South Carolina, with the same symptoms. This has occurred since I got my 612.
    Ken
     
  10. ozarkham

    ozarkham Cool Member

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    Sep 20, 2008
    This is only occurring when I attempt to view the station through the 612 receiver. The stations view fine through the turner on my HDTV tuner or on another TV with a converter box. This leads me to believe it's an issue with the 612 receiver.
     
  11. ozarkham

    ozarkham Cool Member

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    Sep 20, 2008
    Deleted and re-added the channels and no change. I'm not familiar with "Multipathing". Can you explain? Thanks.
     
  12. Ron Barry

    Ron Barry 622 Tips & Trick Keeper

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    Dec 10, 2002
    Leads one to believe but does not necessary mean it is the case. There have been other situations where other tuners work fine but the Dish tuner has an issue. In some cases it is the receiver, but other cases it has been issues with the stream data and the Dish implementation is just a bit pickier about it being right. I personally have seen at least 3 or 4 cases over the years where this has happened. Boylehome's suggestion is exactly what I was trying to say on one of my possibilities. Best to try and rule that out.

    So was this working and suddenly stopped or has always been that way?
     
  13. Ron Barry

    Ron Barry 622 Tips & Trick Keeper

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    Dec 10, 2002
    I am definitely not an OTA expert. My understanding is multipathing is when the signal reflects off objects causing the same signal to reach the antenna from multiple paths. You can try to address it by using a directional antenna, repositioning the antenna, or relocating the antenna.

    I am sure people more versed in this area will chime in, but like I said a good place to go is the AVSForum area to see what people are saying out your local channels.
     
  14. ozarkham

    ozarkham Cool Member

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    Sep 20, 2008
    So was this working and suddenly stopped or has always been that way?[/QUOTE]

    It was working when I got the 612 installed several months ago. Seems to have started in the past month.
     
  15. Ron Barry

    Ron Barry 622 Tips & Trick Keeper

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    Dec 10, 2002
    Then I definitely would contact the local station. There has not been an update to the 612 in the last month. Most likely something changed on the other end that the 612 does not like. This would also make the multi-pathing less likely but still a possibility if the antenna someone got moved or some other external influence created it.

    Most likely possibility in my mind is a station change.
     
  16. ozarkham

    ozarkham Cool Member

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    Sep 20, 2008
    Success :) I unconnected the OTA antenna that was connected to the 612 (it's an directional antenna in the attic). I then connected rabbit ears to the 612 and rescanned the locals. The PBS stations that were dropping off are now staying. When I get a chance I'm going to try to reposition the attic antenna to see if that fixes whatever is causing the signal drop from that antenna.
     
  17. Michael P

    Michael P Hall Of Fame

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    Oct 27, 2004
    BINGO! Your antenna is off-axis for this station. A slight re-point should resolve the issue.

    As a veteran user of Echostar's ATSC tuners (921 & 942) I have nothing but praise for the one on my current 622. I presume the 612 has a similar tuner. It's more robust than the older models. I had an A/B/C situation (i.e. 2 A/B switches in tandem) in order to get all my OTA signals. With the 622 I just aim my Silver Sensor at the farthest station (57 miles OOM), which is 180 degrees +/- 45 degrees :eek2: from the nearest stations and get a lock on just about everything without having to switch. A 90 degree off-axis signal OTOH will disappear, but everything else comes in.

    Another possibility, since you mentioned other tuners getting a lock on this station (presumably with the same antenna) is that you are losing the signal in your cabling by the time it reaches your 612. Try replacing any splitters in the line.
     
  18. oljim

    oljim Godfather

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    Aug 6, 2002
    Make sure the input on 612 is set to antenna, some how my 612 changed to cable
     

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