Samsung CXD2512 25 in. Combo "dvd vhs player keeps turning" Questions

...a DVD or VHS using the yellow red and white cables from the Samsung to the other player. you have to hit the vcr/tv button on the remote. there is a separate line that works for games and dvd

vhs tape in that u don't care to use again, and just leave it in all the time.  The tv and dvd will work without a problem.  I have been using my tv like this for 2 years now.  Only