Question about Samsung HL-R4266W 42" HDTV-Ready Projection Television

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Snowy picture my tv just started having a very snowy picture, mostly on the lower channels. The cable guy said my signal strength is fine.

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.u need to replace the tuner of ur tv set...its a technical work better call service technician

Posted on Jul 03, 2008

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Cannot change channel on my Dynex DX-L26-10a TV


Try checking the signal strength then run the scan again.
Checking the DTV signal strength
You can check the DTV signal strength to determine if you need to adjust your antenna or digital cable input. The higher the signal strength, the less likely you are to experience picture degradation.To check the DTV signal strength:
1.Press MENU. The on-screen menu opens.

2.Press < or > to highlight Channel, then press v. The Channel menu opens. The DTV signal strength is shown at the bottom of the menu.

3.Press EXIT to close the menu.

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Snowy picture


The remote doesn't effect the channels, I would say you have poor signal or interference from another device nearby.

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We have a LG42lx6500. when you turn it on after being off for a few hours the picture colour is distorted for a couple of minutes before correcting. At times you can see the individual pixels. Sometimes...


Hello

Make sure TV is on the correct channel or input. Check the cables for correct routing from TV to any other devices. Check cables to ensure they are tight and secure.

An analog signal converted to high defintion resolution will cause lines, blurriness or fuzziness in the picture. Change the resolution to a lower or native setting using the media device (cable box, DVD,). This may be an issue that requires a service call to cable provider.

A problem on one channel may just be a error on that channel. If using an antenna, it might need to be adjusted in order to ensure good signal strength. For digtal channels, go into TV Menu. Check the DTV signal. Weak signal can cause picture distortion.

If another device is being used such as a cable box, DVD player or VCR switch between devices and test picture. Check routing of cables that are used to control the image. This should be a series of red, white and yellow cables.

If a VCR with a cable box, make sure the VCR and TV are set to the correct channels for video signal to pass through. If problem is still occuring, try another set of cables. bad cables can cause picture distortion.

Bad cables can cause picture distortion as well. Try another set of cables. If picture is better than when using the cables replaced, this was the issue. If cables are not an issue TV may require service.

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1 Answer

TV picture freezing


digital signals do not fade out and get snowy like signals used to do ... if the signal gets too weak then it just freezes .. you might say its either perfect or frozen .. sometimes it gets blocky .. where some sections of the screen freeze while other sections continue .. what that means if you are using an antenna is .. you need a better antenna or better aim for the one you have .. outside is much better than inside but just rabbit ears are ok for strong signal areas .. you can aim the antenna based on a signal strength meter usually provided in HD receivers in the setup menu .. you can also get an antenna map from "www.antennaweb.org" .. that will show you what direction to point the thing for each channel and how strong each channel should be ... if you are using Cable instead of an antenna then you should have good signal strength but there is a problem called "Crest Factor" .. that becomes an issue when they put too many signals on a given cable .. the cable handles it ok as long as there is no damage (bad ends, water inside, animal chews, corrosion) but the cable box or receiver may be overloaded as thousands of signals drift in and out of phase ... thats a cable company problem that might be getting worse as more channels are added .. the results are that periodically the picture will freeze or pixelate .. you probably have to accept a little of that but more than a little gets really irritating ....off the air reception with an inside antenna (like rabbit ears) you will find that moving around the room can effect the signal for channels in the UHF range (most are) .. aiming the antenna and getting it as high as possible will minimize that problem.. make sure whatever antenna you use is designed for UHF as well as VHF .. the little circle often found between the two "rabbit ears" is actually the UHF part of the antenna .. it can be rotated for UHF channels while the big ears are aimed and adjusted for VHF .. antennaweb.org will tell you which is UHF and VHF ..

Dec 28, 2009 | Televison & Video

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Tv has only snowy screen. Used the remote to


What to do if you have an all snowy picture (blue screen or the TV displays unusable signal-no signal or no sync)
1 – If you are using a digital cable box or satellite receiver (make sure it’s on) and be sure your TV is set for either CH3 or CH4 (which ever you usually view it on). If you usually view it through video inputs (video1 or 2 etc.) make sure the appropriate input is selected.
If you still don’t get a signal see if you get picture using the DVD or VCR (if available) if you do than plug the satellite or Dig. Box temporarily into the place of the DVD (unplug DVD) you may have to use some A/V cables (RCA yel./red/wht like the ones on the DVD) to hook to the tv from the sat./dig. box. If you get a signal then the sat./dig box is ok. If not the Sat./dig box is not sending a signal and is either defective or needs to be rebooted (unplug wait 5 min try again).
2 – If you are using standard cable or antenna (source) if possible check that the source is good by connecting to another TV. Otherwise try running the source into a VCR and then out to the TV using video inputs (RCA yel./red/wht like the ones on the DVD) and then selecting the appropriate input. Try seeing if the VCR plays using standard CH3 (or CH4)
If the VCR plays on video input but not when connected to CH3 (CH4) then the tuner of the TV may be defective – see if you can use the VCR to change channel using the VCR remote.
Be sure to vote/rate me if this helped Thanks!

Nov 24, 2009 | Toshiba 32AV502U 31.5 in. LCD HDTV

1 Answer

I have installed a Digitalstream DTX9950 converter box with my TV attached to a rooftop antenna. I can turn the TV off and on with the DTX9950 remote, but I can't bring in any stations, other than the DT...


Are you using the coaxial cable to connect the converter box to the set, or have you hooked it up with rca type video cables? The latter are highly recommended if you want a better connection and have audio/video inputs on the back of your television. But you don't want both A/V & coaxial.
Also be aware that some older antennae will not pick up digital signals well. Try to use a coaxial cable all the way up to the antenna junction. Find out where most signals are broadcast from in your area and aim the antennae appropriately. (Use a compass.) See helpful link here. Your converter remote should have a signal strength button that you can use to check the various channel strengths. If you're using a coaxial link to the tv and have little signal strength, expect a poor picture. You'll also want to select the Mono option for Audio Output in the converter menu.
Finally, depending on the age of your set, if you're using rca video inputs, use the TV/Video button or the AV button on the TV or universal remote to switch the input from the channel on your TV to the video 1 setting (or whatever picks up the digital converter signal) so you'll get that clear signal. Then you can use the converter remote to change channels, adjust volume, etc.

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1 Answer

Sony SLV-640HF Problem


I would be inclined to say that there are only two likely problems that you may be encountering. Either you are getting a bad signal feed, or the connectors on the cable are getting old and need replaced. The connection to the cable can break down over time, especially if they have been connected and reconnected several times. I cannot rule out problems caused by the transition to DTV, but that doesnt seem likely if there are only a few channels affected. As far as "selective failure" of the VCR's built-in tuner, I would say that that is also a very unlikely source for the problem If the tuning components inside the tuner had gone out, I would expect to see a problem on all channels watched through the system. If you are having this problem on all channels of the sony, then the tuner could surely be the problem, but if you haven't used it much that would indicate a problem at manufacturing, however since at least one of the machines is working fine on some channels and not on all of them, I would suspect the connections or the signal from your cable company. Contact them first ands see if they are having signal issues, if not try replacing your connectors.

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3 Answers

Don't get ABC or NBC local channels anymore


ATSC tuners ("D/A converters") pick up signals off the air just like old school television. It sounds like you are just not getting a signal of sufficient strength. A weak analog signal looks like a "snowy" picture, which most of us are used to. But, the new digital channels quickly go from a perfect picture to none at all. It's basically all-or-nothing.

Try attaching an antenna to your converter. I know you can buy a new antenna from your local big box electronics store which is labeled "Terrestrial HDTV" or something, but that really doesn't mean anything. You can use any old TV antenna. Even a quality FM antenna (with an F-Pin coax connection) may work just fine.

When setting up the antenna, keep in mind that different channels are transmitted from different towers, in different locations with different strengths. Move the antenna placement and position around (just like grandpa had to do). You may have to make a compromise to get the best signal for your favorite channels.

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1 Answer

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Bad primary tuner==can be replaced,or==by-pass by using video inputs.

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1996 RCA Color TV model G27720tn


If you are on cable, first run the cable wire from the wall directly to the TV, eliminating any cable box and/or VCR. If channel 2 is snowy but the rest (especially 3-6) are clear, it is most certainly a cable problem and not a TV problem. The TV uses the exact same circuits for channel 2 to 6 (VHF-LOW) so if the tuner was bad and 2 was snowy, 3, 4, 5 and 6 would be snowy too. Bring a second TV into that room, disconnect the cable wire from the RCA and connect it to the second TV. Is channel 2 on the second TV as snowy as it was on the RCA?

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