I'm using a TRRS cable such as showed in the above mentioned link.
Is from a camcorder, so I must use the red rca instead of the Yellow one. I've checked connections using a tester and are ok...

I say that signal is NTSC because I see all de-focused and B/W, on a new LCD TV and on an old CRT monitor. I've erased the card, deleted all partitions, formatted and then installed raspbian wheezy from IMG file as by tutorial. I've configured it, then modified the config.txt. Rebooting with videoco...

Any suggestions?

I've installed Raspbian from Noobs.
Raspberry now boots with raspbian...

I've a Raspberry Pi2 model B (revision 1.1) with NOOBS 1.40 (I've installed Raspbian). There is no way to show video output in PAL mode. I'm using a cable such as showed on http://www.raspberrypi-spy.co.uk/2014/07/raspberry-pi-model-b-3-5mm-audiovideo-jack/ cable is good. I've modified config.txt by...