Let me continue on this thread as my problem is exact the same as the initial request, just that I'm not able to get the composite output working at all.
- Tried both 9.7 and 10.x
- Tried adding: enable_tvout=1, sdtv_mode=2 to the config.txt
- Tried different cables
- Tried reinstalling several times the raspberry sd.
All that and a lot more without success for 1 week.
Somehow I was able to see a rainbow on the tv and then a blank screen, but that the most I couldn't get.
Any idea what else to check or test in order to get the composite output working?
Help would be much appreciated!