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With TV and cable box turned off, check all the wire connections on the back of TV and cable box by unplugging and plugging wires back in and unscrewing coax cables and screwing it back in. If the coax cables are a few years old, might be a good idea to replace, cause the ends tend to corrode.
What cable is being used? Often times there is a few things that could effect the picture and causing flicker. If you are using an HDMI cable, or the hdmi plug on the box or tv, you could have that problem. Because the picture is digital, you don't get the snow and lines we were used to. Because the cables are so stuff, often over time they can stress and pull on the plug and cable. Try a new cable, if that does not work, try another hdmi input on the tv. If that fails then try a new cable, like a component cable or RCA. If none of these work and you still have this issue with the box then most likely it is the tv or the box. Swap out a new source, and start this process all over again. If you get the same result then it is the tv. If it works with the same cables, then it is your box. Att will send you a new box if that is the case. If it is the tv, call Vizio. Warranty or not call them. If you are sure you are out of warranty, play dumb, be vague but nice. Often you can get someone out there still at no cost.
I'm not certain but it sounds like there is a loose video cable in there...if you are able to, take the tv apart, and literally push on all of the connectors and cables to make sure they are not loose. The main video cable may not seem to be loose, but once it is making contact again, it should clear that mess up. Just look for cables running to the main screen and pull them off and put them back. Then put the tv back together again and see if it worked...it usually does. why does this happen? Some blame it on dust, others blame it on quick manufacturing processes...whatever the case, the cables become slightly seperated from the controller board and that happens...it also happens to computer monitors too...Good luck and take your time. If there are a lot of screws and things either take pictures of where they all went or write it down. I like to make a diagram on a piece of paper and tape the screws on the diagram to show where they went.
But first you can press gently at the back of the laptop on various spots and see if the lines go away or if they get worse. Hold the LCD with both hands on both sides, then gently move it back/forth in opposite motions and see if the lines get worse or if they go away.
If the unit is not under warranty anymore you could open the LCD and
reseat the LCD cable. To do this remove the rubber buttons that are located on the front LCD cover - there should be 4 or 6 or 8. Then you should see the screws. Unscrew them all. Now you can remove the front cover by taking it off gently.
Depending on the model, you need to remove the screw that hold the LCD to the backcover so you can seperate the LCD from the backcover to reseat the LCD cable on the LCD.
After reseating the cable (removing it from the LCD cable slot and connecting it again) you can close the unit.Reseat the LCD cable on the mainboard as well and see if that helps.
Furthermore if all this reseating pulling and pressing didn't help, test the unit by connecting a external monitor or LCD. If it gives a clear good picture on your external, then you know your LCD might be faulty.
Samsung's digital light projection (DLP) televisions use a spinning color wheel to create the colors that are seen on the screen. If the color wheel becomes misaligned during use, it will become damaged and have to be replaced. Replacing the color wheel on a Samsung DLP television can be done at home, once a compatible-sized color wheel has been bought from a TV supply store.Replacing the color wheel yourself will void any Samsung warranty that might be in place, but is the only solution for getting the TV working again in as short a time as possible.
Put on the anti-static grounding strap to keep static electricity from damaging the internal components of the Samsung DLP TV. Turn the Samsung around so that the back is facing you. Make sure the Samsung is unplugged from the AC socket.
2 Use the Phillips screwdriver to remove all of the screws from the back panel. Put the screws aside. Pull off the back panel.
3 Loosen the two screws from each side of the projection bulb's case. Pull the projection bulb out. Put the projection bulb aside. Use the Phillips screwdriver to remove the two screws from the left side panel. Pull the side panel and the circuit board attached to it out carefully and put it down so that the cables attached to it have not been pulled out.
4 Take a picture of the power cable's position with the digital camera so that you can put it back correctly later. Pull the power cable out from inside of the Samsung's case so that the center panel is free to be pulled out. Remove the two large headed screws from the center panel with the Phillips screwdriver. Remove the top two screws holding the panel to the plastic case using the Phillips screwdriver.
5 Slowly slide the center unit out a few inches. Take a picture of the projector lens' positioning with the digital camera so that you can put it back correctly later. Unplug the two cables from the left side of the center panel. Unscrew the sensor switch using the Phillips screwdriver. Slide the center panel completely out of the Samsung and put it down on the clean cloth. Blow off the color wheel assembly with the compressed air.
6 Use the tweezers to remove the green plug from the top of the color wheel cover. Use the tweezers to remove the two cables at the side that are coming from the color wheel. Use the Phillips jeweler's screwdriver to remove the screws from the top, front and back of the color wheel cover. Slide the color wheel cover straight up to expose the color wheel.
7 Use the Phillips screwdriver to remove the three screws holding the color wheel to the color wheel assembly. Lift the color wheel up and out of the color wheel assembly and discard it.
8 Position the replacement color wheel in the color wheel assembly. Reassemble the color wheel and reassemble the color wheel assembly. Put the color wheel assembly back into position in the rear of the Samsung DLP TV. Reassemble the Samsung DLP TV. Plug the Samsung DLP TV back in for power. Turn the Samsung on and enjoy seeing the colors displayed properly again now that you have replaced the color wheel.
Your mainboard is damaged, the mainboard is the one where you plug all the cables (component HDMI), it is really easy to replace, you only need to take special care with the screws. 1. remove all screws in the back. 2. unplugg all cables from mainboard. 3. remove all srews from mainboard and replace it. 4. put all screws back and then plug all cables again. 5. double check all mainboard cables are properly secured. 6. Test TV. 7. put the back cover and secure it with the screws.
Okay, we work with what we have available to us but the screw on connectors are...... Try reversing the splitter so the single port faces away from the line that runs into the back of tv2 and connects to the the line from outside. Also check to ensure none of the wire braid has come into contact with the center conductor- copper wire, stinger. I do not know how you prepared the cable so I will say that the white dielictric should be cut squarely and terminate flush with bottom of the connector seat. The diagram is a cut away view and is very crude but I think you can garner the idea. If you need more assistance let me know.
The first thing I would check is the antenna or cable connection into the set.
When an analog TV signal is weak, the first thing to go is the color, then the picture, then the sound.
If you have another TV, connect it to the very same cable or antenna connection and see if it fails the same way, too.
Make sure you just disconnect the cable end right where it goes into the failing TV and connect it to the other TV - don't disconnect the antenna cable from the wall for this check.
If the second set does not fail, gently pull on the antenna wire - not too hard, you just want to put a little tension on it to see if it makes the color cut out.
Reconnect the first one and try again. If it's fine now, the connection was loose. If not, it has a tuner problem that must be repaired.
Also, when you look at the end of a TV connector, the center wire should stick out just a little bit, like in the attached photo.
If it doesn't stick out as bit, it won't make good contact, and will result in a weak signal.
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