You do not need the RF modulator at all. It is a poor choice when your TV has video inputs, which it appears to have.
The TV has a yellow video, and red and white for audio. Also, antenna coaxial connection.
Look on the back and see if it also has an S-Video port (small round connector).
Either way you can hook the VCR to the antenna[B] in[/B] of the TV, on the VCR set it to either channel 3 or 4 and then put your TV on the same channel to view.
The DVD player will use the video inputs on the TV “yellow video, and red and white for audio” (from your post).
If you have the S-Video port on your TV, use that, it will give you the best picture along with the red and white audio from the DVD to the TV.
This is your DVD players outputs:
* 1 x component video output ( RCA phono x 3 ) - rear
* [B]1 x composite video output ( RCA phono ) - rear[/B] (Yellow)
* [B]1 x audio output ( RCA phono x 2 )[/B] (Red and White)
* Digital audio output (coaxial) ( RCA phono )
* Digital audio output (optical) ( TOSLINK )
* [B]1 x S-Video output ( 4 pin mini-DIN ) - rear[/B] along with [B]1 x audio output ( RCA phono x 2 )[/B]
To watch the DVD you switch the TV to Video mode.