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Re: 46" LCD TV
Have you try the other inputs?
I would suggest to try all the other inputs and if you're still getting a black and white picture then that would mean a defective main board. If your TV is less then a year old, still cover under manufacturers warranty.
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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.
With the blue/green/red cords (Component) you need to get a very good bright light on the connectors so you get the plugged into the correct COMPONENT connectors on the TV. Note, there are white and red AUDIO plugs right near the COMPONENT input so you need to be VERY careful. If you get it wrong, the colors on screen are often off and even black&white.
How is your cable box connected to the TV? Screw on "COAXIAL", Yellow, Red, White "RCA", single flat connector "HDMI" or 5 colored plugs 2 X Red, 1 X White, 1 X Blue, 1 X Green "COMPONENT"
If the problem happens using different input and devices, then it is either the terminal circuit (input/output connectors) or the processing unit in main board. The terminals are unlikely the culprit if problem concerns different inputs.
I imagine that the picture is not properly B&W (gray-shades) but some kind of reddish, bluish or greenish picture as the LCD will process picture using RGB (red green blue) channels instead of CYMK (cyan yellow magenta black) like CRT TVs.
Test the TV using an external aerial. You will notice if the channels have the wrong color even from static.
Use different inputs, different cables and different devices. beware of SCART cables, the SCART contacts are very easy to break. A defective cable will loose picture. Better testing using AV cables and component cables. AV cables are red/white for sound and yellow for video. If the two-wired yellow cable does not work, then the TV is faulty. Other test can be done using component cables. Component cables send the three red-green-blue signals on different cables, hence testing is simple. Test swapping cables and see if TV tone stays the same if color tone changes the problem were the cables. Test also using at least two different devices (e.g. one DVD player and one TV receiver or a playstation).
If you find that the TV is defective call the manufacturer at the number listed on manual. If the problem is that one or more RGB channels do not work the TV main controller board must be replaced.
You will need to connect all the cables for component to get a colour image. The component cable has 3 connectors all for video. If you have connected only one cable for video then you will not get colour information. Component needs all 3 to get colour and luminence information. You can use a regular composite cable but you have make sure you match up the colour codes on both sides i.e to TV and to the source. The other two Red and White a separate cable is for Audio.
HI, i think ur component video connection may inter changed. check it. are u connected red to red, green to green an blue to blue. if interchanged the picture will be black and white. also check the video system of ur tv and dvd. about audio. for that u need a stereo rca chord. connect the audio output of ur dvd to the component audio input of ur tv. if u have already connected the audio cable , check the audio setup of ur dvd. there is selection for pcm audio select it and then check again. ok
Your problem may be that you need to select the "AV" input on the HDTV. Samsung HDTVs of late combine the composite video with the green input component video. To use the yellow composite video in the green input port you have to select the proper AV input on the TV which tells the TV to go composite video (yellow) instead of component video (green). Try this, it may work.
If it says "weak or no signal", this means your are not showing the correct input or have no channels programmed.
To find the the correct video input:
1. turn On the device you are trying to see
2. press the [input] button on the side of the TV until you get a picture (wait 3 seconds between pressing the button)
You program the TV by accessing it in the User Menu.
Also, You may access the inputs using the TV remote. Each input button (V4 and V5) may need to be pressed muliptle time to access the picture . When you press this on the remote you will notice the input change from Composite 1, Component 1, S-Video. V5 will show composite 2 and component 2. Using the side panel allows youto scan all inputs in case you are not sure.
these sets are designed for a digital input source, so if you are on an antenna or analog cable it will not look as clear..also if you can set the source for 720p instead of 1080i..it sounds like a lower resolution but 1080i scans 540 lines 2 times to get 1080i and 720p scans 720 line each time,,