JVC GM-P420E Plasma no video green screen

Computer VGA to TV AV RCA S-Video Composite Converter, Costech HD 1080P HDTV Video Cable Converter Adapter Plug and Play for HDTVS, Monitors, Display, Laptop, Desktop, PC
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In order to connect your laptop to your TV using RGB, you need an RGB adapter. RGB is also known as component video; it breaks up a video signal into red, green and blue. laptops do not have RGB outputs. However, many laptops have VGA, DVI or HDMI outputs. An RGB adapter connects the single VGA, DVI, or HDMI cable to an RGB cable, which is actually three different cables tied together. INSTRUCTIONS:
1. Connect either the VGA, DVI or HDMI (in the order of increasing video quality) cable to the VGA, DVI or HDMI port on your laptop, depending on what is available. 2. Connect the other end of the cable to the side of the RGB adapter with the single input. 3. Connect the RGB cables to the red, green and blue ports on the other side of the RGB adapter. 4. Connect the other end of the RGB cables to an available component input on the back of the TV. 5. Tune the TV to the component video input you used through your television's menu. 6. Turn on your laptop. The laptop should now display on your TV screen.

Sorry, this will not be easy....

You need to locate a composite to RGB converter box.

Your Sega outputs a composite signal - Video (yellow) and audio left/right (white/red).

The TV needs RGB (red/green/blue) inputs on the component connection...your composite signal divided by three. There are converter boxes out there for around 70 bucks or so.

Are you certain you do not have a yellow VIDEO IN jack on your set? Every LCD and LED TV I have experience with has at least one.

Hello

Your TV will display all High Definition signals as 1080i True HDTV™ and all standard definition signals will be displayed as 480p.

Component Inputs 1-2
YPbPr(480i/480p/1080i)
These inputs can be used for the connection of A/V equipment with component video outputs, such as a DVD player or external HDTV receiver. Please see Appendix B for signal compatibility.
Input DTV (480i/480p/1080i)
This input is used to connect an external DTV receiver, and can be configured for YPrPb and RGB plus H&V signal types.

As a special feature, you have the ability to adjust the red and blue light beams in reference to the fixed green light beam. This process is called convergence. There are two separate memories for convergence. One, for SD 480i/480p signals; the other for HD 1080i signals. SD convergence should be adjusted while watching an SD source and HD convergence should be adjusted while watching an HD source.

Wide Expand: Enlarges the picture, cropping some of the image on both sides. This Expand format is useful to remove or reduce black side bars on HD broadcasts of 4:3 images with black bars. Available for analog 1080i, digital SD 16:9 and digital HD signals.

InputDTV
This input is compatible with most standard DTV and satellite receivers with component video (YPbPr) outputs. Compatible DTV signals are SDTV 480i/480p, and HDTV 1080i. All other DTV signals, such as 720p, need to be converted by the DTV receiver to one of the compatible signal types. Please check the DTV receiver specifications before connecting.
This input is compatible with some DTV receivers using RGB with "separate H and V sync". Compatible DTV signals are SDTV 480i, 480p, and HDTV 1080i. All other DTV signals, such as 720p, need to be converted by the DTV receiver to one of the compatible signal types. Industry standards for DTV RGB signals (systems, synchronization, timing, and signal strengths) are not currently established. These inputs will not be compatible with all DTV receivers that offer RGB, HV outputs. RGB, HV signals with less than 5 cables are not compatible.
If your DTV receiver offers both DTV component video signals and DTV RGB, HV signals, we suggest you use the DTV component video signals. Check the DTV receiver specifications before connecting.
Ok.

the tv has as follows. Use the bnc conectors to hook it to the RGB & R and L Audio. or reg Comp input ( Yellow ,Red White.) can get adaptors at the Shack. Inputs
Composite BNC Back Composite RCA Back Component 3 BNCs Back RGB 5 BNCs Back RGB 15-Pin Dsub Back RS232 DB-9 Dsub Back

More info is needed, please. When you say 3 video inputs, what are you referring to? I believe the Sanyo has the HDMI, RGB/YPbPr component video, S-video component, RCA composite video and Coaxial connections, though I'm not sure how many of each. So lets start with the best quality to least.

HDMI: This is one cable that provides both audio & video and produces the best picture quality. It comes in different lengths and is a wide, flat connection. A must for 1080p resolution signals.

Component video, RGB or YPbPr analog component cables: 5 separate RCA cables, 3 of which are video that separate the video signal & 2 audio cables. The 3 video cables are generally red, green and blue (RGB) or marked individually with the letters Y, Pb/Cb & Pr/Cr . The audio cables are red & white. You may see these on the back of DVD players often. They will carry a signal up to 1080i but not 1080p.

S-video component: One cable for video, it is a round connection with several pins in it and will only plug in one way. You must use 2 RCA cables for audio with this cable, red & white again.

Composite video: 3 separate cables; Red, White & Yellow. Red & White are audio, left and right while yellow is video.

And finally there is coaxial which it the cable that is identical to the cable from the pole/ cable box or your dish. It is the poorest quality.

What can happen is you are using 3 standard RCA cables and have them plugged into the component input & they will not carry the signal, or one end in component input and the other end in the composite output or vice versa. Another is that you have the wrong input selected on the menu. Check all your cables and connections, plus the input you have selected on the TV itself.

possible change your AV cable...you can't use the same component cable for the normal AV input...component cable (RGB - RED,GREEN AND BLUE),normal AV cable is RED,WHITE,YELLOW.
GOOD LUCK.

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The problem sounds like one I had. If so, the cause is as follows.

The Daewoo ouputs synchronisation information on the green channel of the RGB outputs (which are pins in the SCART socket) The Panasonic TV automatically preferentially selects the RGB input in the SCART rather than the composite video signal in the SCART. The video circuits in the Panasonic should ignore the sync on the green channel but instead interpret the sync as green signal information which means the adjustment of the green channel is upset leading to a very green picture.

Possible solutions:
1. From the TV, manually select composite video input, not RGB. This may not be possible - I think the TV automatically goes for the RGB if it is present.
2. Disconnect the wire to pin 16 in the SCART socket. This is the signal from the VCR/DVD to indicate that RGB is available. Disconnecting it means the TV defaults to the composite video. This is what I did.
3. Connect the TV to the VCR/DVD using component or S-VHS leads only.