JynxBox Android M6 will not connect with RCA cables

Anyone has gotten this box to work with RCA cables ? There is a plug on the back of the box labeled "CVBS", and there is a connector included with the box which is basically a CVBS to RCA (Yellow, White, Red) cable connector, but when i connect to a tv using the rca cable, all i get is a black screen on the tv.

On the other tv HDMI works perfectly fine, but this tv I need to use is only RCA, I went to the settings of the box under display, there is option for CVBS/YUV, when i open that it only lets me select YUV (Whether I have CVBS cable connected or not). Anyone knows what YUV is or how I can get the CVBSto RCA cable to work on my tv ?

you might have to go into your tv's menu and select composite