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Hello. Before you start replacing parts, make sure your connections are correct. It sounds like you have connected a composite source to a component input. Composite is three RCA plugs, a yellow for all of the video, and a red and white for audio left and right channels. Component is five RCA cables, green, red and blue for video, and red and white for audio. if composite is connected to a component input, the picture will be black and white with squiggly lines all through it.
In such cases, we have to ensure that it is not the input device that is causing this problem. So, please switch your input device to something you are sure, works. If you notice same problem, look for loose contacts in inter connecting cables and jacks. If problem persists, please refer it to a qualified service technician.
Yellow is a composite output and should be plugged into a composite input, whereas Y indicates the COMPONENT input of the TV. If you don't have a separate composite input use a scart to phono (rca) adapter in your tv's scart input.
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thats a good assumption. try multiple sources and see if its just the one source. if its fuzzy, maybe youre using coax cable?? and the cable is bad or has poor signal. try tightening all the connections and making sure the cables are ok, let me know if this doesn't help.
If the inputs look normal then you might have a issue with your cable and or antenna. Does the TV have 2 antenna inputs? If so try the other one if it works ok then the antenna switch is defective. If not then the tuner is bad.
You have to plug your DVD cables into the "input" connectors on your tv. Input audio and input video. Also there is either a switch on the back of your tv or in your menu where you have to choose "component video". Or it might be labled Video 1, Video 2, Video 3, etc. You might have both a switch on your TV and a choice in your menu. If so, both have to be set to "component Video. Sometimes on the back of your set, the switch is not labeled. It just has "arrowed" lines coming from the different switch positions and leading to the "outputs and inputs" on the back of the set. Set the switch so that the lines lead to the red, blue and green INPUTS on the back of your set. Your problem is not serious. It is just a matter of "telling" your TV that you are using "component video". Component video is when you are using the red, blue, and green inputs. It is also possible that your DVD has another output besides "component out" and also has a switch. Make sure this switch on the back of your DVD is in the "component OUT" position. Your DVD might also have a connector on the back that looks like connectors on the back of VCR's and most TVs. This is an "F" connector and the cable has to be screwed on. It's just like a cable tv cable. Screw a cable into the "out to tv" on the back of your DVD and screw the other end of the cable into the "RF" INPUT (or cable input) connector on the back of your tv. Be sure to look ALL through your TV menu and DVD menu. The DVD sets to "component OUT" and the TV sets to "component IN". Hope this helps.
I had the same problem and found that the ground wire outside where the cable companys box is was not even hooked up. It was just hanging there, once I hooked it up it went away. The cable company gave me the run around telling me it wasn't their fault. I now have Direct Tv.