By default, you don't need any configuration - a RPI3 will enable the analog video/audio when no HDMI is detected.

enable_tvout is just for Pi4, which doesn't do the switch automatically.

When you're measuring the output, is the cable plugged in the Pi ? If the signal goes through, then maybe the issue is the TV - does it accept composite from other sources ? Do you have a PAL or NTSC TV ?

@Trendkiller-9 Glad you solved it :D

Thanx @Fiddla01 Fiddla01 for the new threat that brought us a solution.

@mitu that saves me a lot of sleep.

Not perfekt but a way i can live with it

@beldar I think it's something where the cable probably shouldn't be working, but does.

I mentioned here I was using an Argon One V2 case, that case didn't work with the same cable.

However I just purchased an official cable, and it works fine.

False positives everywhere

EDIT: I have looked into it more, and realized that it was because overscan was disabled. I neglected to remember this for some reason, but I have fixed it.

Normally the Pi should switch to composite if the HDMI port is not connected, but you can force PAL by adding sdtv_mode=2 to the config.txt configuration file.
Assuming your composite cable is correct and you've switched the TV input to the RCA input, you should get an image.

I see! The screenshots from your link really do show the difference. Thank you!

Somethink like this, but US based.

@Haemogoblin Check out these topics for some solutions to some similar problems

@mhughson said in Stuck at bad resolution:

Thanks for the help!

I didn't do anything, but glad you got it sorted out !

@mitu Yes i edited the XML file. The default was 1920x1080 and i changed it to 640x480, which of course is 4:3.

Hi Edmaul69

I tired test yellow, red and white by two cables but it still don't work, There website you can see which cable I using.

It don't work, I think maybe code error.

http://www.feeldo.net/1pc-25mm-jack-plug-convert-to-3-rca-audiovideo-female-connector-cable-audio-l-audio-r-video

https://www.alibaba.com/product-detail/LBT10l-3-5mm-A-V-Cable_1441360532.html

Regard Chris