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I lose reception on my hdtv every 20 to 30 minutes the screen flashes snow and black for ten seconds. I have time warner cable the cable guy replace the entire cable line from the street to my house and put new cable wire in my house and replaced the splitters I also replaced the cable box I have a vizio 50 plasma

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  • roland vilches Nov 16, 2008

    When I press the input button and switch to analog on the vizio tv it doesnt lose reception only when i switch to hdtv also i used signal booster and had the same problems with the hdtv also I change all the cable connections. The tv has been problem free for a year just started having this problem for 2 weeks.

  • roland vilches Nov 16, 2008

    If it is the tuner why dont i lose reception when i put the tv on sdtv only have problems hdtv and where do i purchse a tune.

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Check your power supply eartings and voltage fluctuation.
try your projection in other places.

Posted on Nov 16, 2008

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Just an FYI, if you're using the HDMI output of your cable box, that COULD be where your problems are coming from. I fix TV's every day and have seen MULTIPLE instances of no or intermittent sound and picture, always with HDMI output of Time Warner boxes. I have seen customers exchange boxes 3 and 4 times and still have the problem. My solution to this is to have them use the COMPONENT output of the cable box rather than HDMI as TW appears to have handshake issues with their HDMI outputs on Scientific Atlanta and Motorola boxes. The other solution is to go with a satellite provider, as I have yet to see an issue with the HDMI output on a Direct TV or DIsh box.

Posted on Nov 16, 2008

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Frecoso,

I don't have all the details of your situation, so I will give you my best theory's as to the cause of your problem.

First thing I'd check is the digital tuner that Time Warner should have issued you. This box should be one of the newer varieties capable of decoding the HD signals that TW transmits through the cable line and buffers them for optimum quality.

Second verify that the station you are watching IS transmitted in HD, If it is NOT then your tuner will have to "Upscale" it to meet your picture dimensions. This may cause the "Pixelation" and Lag that you are experiencing

Third Do you have alot of devices on your cable service. Examples: more than 3 TV's and or (1 or more roadrunner) connections, VOIP phone service. Each device on the system takes a portion of the signal strength from the line and may cause poor reception quality. If this LAST case is likely to be the problem TW can put what is called a signal booster on the junction box on the distribution NODE usually mounted to telephone pole outside your home (Its kinda like a signal booster you could buy, but MUCH higher powered) But you would HAVE to ask them to put it in and they WILL charge you for a service call to do so.

Hopefully this has been helpful to you.
Best Regards,
Dave and the FixYa team

Posted on Nov 16, 2008

  • David Preston
    David Preston Nov 16, 2008

    The tuner should be the box that Time Warner gave you to receive digital service.



    I read now that you said you had the cable box replaced, so THAT shouldn't have been part of the problems. Though if you do think it MIGHT be part of the issue you CAN ask TW for an upgrade to a newer box. Maybe even a DVR one ;)



    Sorry for the confusion

    Dave

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I don`t know exactly what the cable company told you but i do know that with a cable comp I had. They told me I had digitel TV through my cable. I didn`t notice right away but my digital channels just where not that good anymore. After calling and having them check everything and telling me that evrything was ok. I still had a problem with my picture, It just wasn`t like it used to be. I repeatedly called untill one day I got the right person. He was a regional director or something like that for all of south and central US. He then told me that they had be having problems with the digital channels in and around my area of southeast missouri. That I may vary well not be getting digital all the time. and some of the stations I was told where digital where in fact not, at least not through them. They ended by refunding a good share of my cable bill I had paid for digital cable for the preceeding 6 months.
My point is. You realy need an electronic technician to check to see if you are actually getting HDTV through your cable. It seems that if the TV is ok on analog and messes up on HDTV then there is problem with the signal coming into the house.Sence you have had everything replaced inside of the house.

Posted on Nov 16, 2008

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The tuner is failing and needs to be replaced , thats why it works for a little while , but it will only get worse and cause other problems if not repaired soon

electech

Posted on Nov 16, 2008

  • jason Nov 16, 2008

    the difference is analog and digital inputs

    are you using the hdmi input ? because mistersony is right about the hdmi input problems

  • jason Nov 16, 2008

    snowy picture is a sign of a bad tuner

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Hi,

Let's try process of elimination:

  • entire cable replace - then not a source/supply/provider issue. they would have checked the incoming signal level;
  • new cable wire in your house - then not a distribution issue. Do you have another TV that could be used to check if the same symptoms appear?
  • cable box replaced - then not a processing issue. How is the cable box connected to the Vizio plasma?
  • Have you tried attaching temporarily the cable box to another TV?
Offhand, this appears to be a cable box/provider issue but I am also inclined to think that it is a issue with the Vizio, perhaps compatibility. Have you tried another source for the Vizio, say a DVD?

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa

Posted on Nov 16, 2008

  • Louie  Role
    Louie Role Nov 16, 2008

    Based on your subsequent post, it is likely that just recently, the signal to your are has changed. A few things you could try:


    • run your system without the signal booster;

    • feed the cable box from another cable source (temporarily) such as from the bedroom with the use of an extension RF patch cord.


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The Service Technician arrived and told me that the channels on satellite 129 has not moved to another satellite. He didn't think satellite 148 had the bandwidth for all the HD channels anyway, though he did state that it would be great if it could happen because the Pacific Northwest can easily recieve reception from 148. 
They did remove my 20" dish and replaced it with a 24" dish anyway, and I was not charged for service call or dish replacement. I asked about putting a 30" dish for reception and he told me that signal strength would only move up 5 with a 30" dish to around 40 on signal strength, but I would still lose satellite reception periodically anyway. I was told it would cost me around a couple hundred for a 30" dish replacement, but they didn't have one with them and would have to order one. I'm getting around 35 signal strength right now with the new 24" dish.

The Installer told me that most CSR's don't know about the reception problem in the Northwest because they are mostly from the East Coast and there is a high turnover rate of CSR's, but the high-level CSR's do, so it would be best to ask for supervisor's until you get someone who knows the reception problem over here. Still, it sounds like there's nothing much they can do anyway. 

So, until a new satellite is put up, Western Washington and Western Oregon HD Dish customers will continue to lose satellite reception for HD channels periodically.

Posted on Nov 16, 2008

  • futureloginn
    futureloginn Nov 16, 2008

    The SD is always lousy on a large screen. You might want to try an amplified splitter. You should consider your cable runs from the splitter to the other televisions. The splitter should be of the proper frequency range. I would take the cable coming into the house and using a one in, two out splitter take one direct to your HDTV and take the other to an amplified splitter.


  • futureloginn
    futureloginn Nov 16, 2008

    That sounds like a cable company compression problem. As new channels are added (to keep up with the competition) the cable co. has to compress the signal more due to limited bandwidth. More compression equals pixelization, picture freeze, signal loss


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Do you have any kind of signal attenuator to strengthen the incoming signal .

Posted on Nov 16, 2008

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