The reason is that your TV is not supported video output mode and the video output is set as Component Video. You can check whether your TV supports Progressive scan (P-scan) mode from the user manual of the TV. Press DISC and 1 on the remote control simultaneously to exit P-scan . After exit from P-scan mode, the video output will be back to Y Pb Pr interlace (not S-video).
Magenta color displayed on my Philips device
Published on 2017-08-24