Composite video out issue

[mattrpav]

I have a Raspberry Pi B+ (512Mb) powered via USB 5V wall power supply. I'm looking to wire up to some screens for in-car video. The screens are 480x324 (aka 1440x234 16:9).

Here is a picture of the video signal: http://imgur.com/QnhfQyt

This smells like a config problem.

I've tried:
1. 2 different distros (Raspbmc and Rasbian)

2. Tried several combos of config.txt settings:
sdtv_mode=0
sdtv_aspect=3
--and--
sdtv_mode=2 (the screen supports PAL and NTSC)
sdtv_aspect=3
--and--
sdtv_mode=0
sdtv_aspect=1 (the screen supports 4:3 and 16:9)

3. Tried connecting to a 50" Samsung LCD TV via composite video.
Result: Same issue

4. Tried 4 different 3.5mm mini-plug to composite cables

5. Tried all three (white, red and yellow) lines as video out

6. Tried a replacement Raspberry Pi-- same result.

Any thoughts, suggestions or next steps would be greatly appreciated.

Thanks!

[fruitoftheloom]

Check you have the correct AV Cable suitable for the B+ TRRS Connector

http://www.raspberrypi-spy.co.uk/2014/0 ... video-jack

[hansotten]

No config problem, but wrong cable.

Your cable is switching video and ground lines.

This is the kind of video you get when video out is connected to ground on the monitor, and ground of the RPi to monitor video in.
(white background, black letters, not syncing).

[mattrpav]

Thanks for the tips, that was it. I ended up having one cable that would work using the red line.

Thanks!