Facing TV Problems? Ask a TV Technician.
Hello and sorry you're having problems.
In order to sort this, I need to ask for more info.
1) Can you get the model number off of the back of the TV?
2) How do you receive TV programming- is it through a cable box, HDTV antenna, direct cable from wall to TV, etc.?
Please elaborate so we can proceed.
Without specifics, it's hard to give a specific answer, but generally yes your Input button on the Toshiba original remote is what changes source from one to another (DVD to cable, etc.).
So what exactly do you see on your screen if you press Input several times (after each press)?