I tried to find the manual /user guide online but no luck..
is there a year/date on the back of it?

the remote doesn't have a set up, menu or display button?
I can't tell from the pictures.
or any of those on the front of the VCR?

here there is no VC 688 listed at all??
but maybe if you pick one close to that model number it might be helpful - if it's free anyway..
http://tv.manualsonline.com/manuals/...duct_list.html

or take it back to the place you bought it and have him show you where/how to do the set up /time stuff.