Composite Screen Not Working

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Enviola
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Composite Screen Not Working

Post by Enviola » Mon Jun 29, 2020 3:16 pm

I have connected the Adafruit screen to the RPI0 for testing purposes and I can not get it to connect to the composite display. If I plug in an HDMI Cable I get output just fine. I have adjusted my config.txt file as others have suggested after searching for the issue online but it still does not work.
The screen turns on and gets power from the Pi and shows AV2 in green letters and that is it.

Please see these pictures:
Image20200629171108.jpg
Image20200629171108.jpg (262.47 KiB) Viewed 139 times
Image20200629171043.jpg
Image20200629171043.jpg (226.63 KiB) Viewed 139 times
Steps I have tried:
Reverse the yellow and white inputs on the Pi. -Fail
Connect only Yellow on each port on the Pi. -Fail

Any help would be GREATLY Appreciated. Thanks!

Dividion
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Re: Composite Screen Not Working

Post by Dividion » Mon Jun 29, 2020 3:51 pm

Your white wire on the Pi is connected correctly to the TV pin, but that yellow wire is connected to a ground pad on the Pi.
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Enviola
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Re: Composite Screen Not Working

Post by Enviola » Mon Jun 29, 2020 3:53 pm

Dividion wrote:
Mon Jun 29, 2020 3:51 pm
Your white wire on the Pi is connected correctly to the TV pin, but that yellow wire is connected to a ground pad on the Pi.
so I need to put the yellow where the white is currently and what about the white? do i splice both wires to the same port?

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infinitLoop
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Re: Composite Screen Not Working

Post by infinitLoop » Mon Jun 29, 2020 4:29 pm

Enviola wrote:
Mon Jun 29, 2020 3:53 pm
Dividion wrote:
Mon Jun 29, 2020 3:51 pm
Your white wire on the Pi is connected correctly to the TV pin, but that yellow wire is connected to a ground pad on the Pi.
so I need to put the yellow where the white is currently and what about the white? do i splice both wires to the same port?
the yellow and white wires are separate inputs - AV1 and AV2. you should only connect one or the other. it doesn't matter which.

Enviola
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Re: Composite Screen Not Working

Post by Enviola » Tue Jun 30, 2020 6:30 am

infinitLoop wrote:
Mon Jun 29, 2020 4:29 pm
Enviola wrote:
Mon Jun 29, 2020 3:53 pm
Dividion wrote:
Mon Jun 29, 2020 3:51 pm
Your white wire on the Pi is connected correctly to the TV pin, but that yellow wire is connected to a ground pad on the Pi.
so I need to put the yellow where the white is currently and what about the white? do i splice both wires to the same port?
the yellow and white wires are separate inputs - AV1 and AV2. you should only connect one or the other. it doesn't matter which.
Ahhhhh.... see i didnt know that!
Do I need to attach anything to the ground port on the pi?

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infinitLoop
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Re: Composite Screen Not Working

Post by infinitLoop » Tue Jun 30, 2020 6:47 am

Enviola wrote:
Tue Jun 30, 2020 6:30 am
infinitLoop wrote:
Mon Jun 29, 2020 4:29 pm
Enviola wrote:
Mon Jun 29, 2020 3:53 pm


so I need to put the yellow where the white is currently and what about the white? do i splice both wires to the same port?
the yellow and white wires are separate inputs - AV1 and AV2. you should only connect one or the other. it doesn't matter which.
Ahhhhh.... see i didnt know that!
Do I need to attach anything to the ground port on the pi?
you just need to connect the one ground wire somewhere on the pi. some people attach two ground wires (at the same pad on the tv board) and run one close to the power and one close to the comp signal. that can strengthen the video signal, especially if you twist the ground and signal wires. but it's not strictly necessary. if you have a lot of static or bad picture quality, you could try that.

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