Can recored to VCR - getting picture recoreded but not sound

This is really silly question probably but here goes

I have a JVC Video Recorder that i use with a portable television that has an indoor aerial

The indoor arier is connected to the Video recorder and i am able to record programs from the TV

However im getting pictures and not sound - anyone got any ideas what i could be doing wrong in terms or cableing and connections?

Has your set-up ever been able to record sound with vision ?

Do pre-recorded videos play OK ?

Thanks Tarfhead
I have been able to record sound with vision in the past.

When it is recording - the channel on tv it is recording from is displaying picture and sound can be heard

I will try pre-recorded video to see if it plays ok and will let you know

Thanks

This might be a useless suggestion, BUT, are you using scart leads ? Sometimes if they aren't pressed in properly you can get just that situation where you have video but no sound. that or check the prongs on the scart in case one is broken.