You will need to tune your TV to the VCR's RF output channel.
I don't know this model, however it sounds like either the modulator is turned off or and this is *very rare*,..the video only has RF loop through and is intended for use only on AV.
Look in your instruction manual in the tuning or problem section, for anything like "setting your RF Modulator output channel". You may need to set it up.
Try this, common on many vcr's.
1. Switch VCR to standby.
2. Press and hold down the Power button on the VCR front panel for 5 seconds.
3. If it displays RF--, try using CH up down to select a number between 21 and 69. Then tune your TV to that number.
Cobweb, January 2005