You can get a plethora of components from a TV(Transistors, various passive components, various ICs), just a word of caution though, if it is a CRT TV, then you want to be very careful when opening it up as there are high voltage components that may still have a charge. Also, the CRT tube itself is possibly dangerous, you should
handle the disassembly procedure with gloves.
Now, if its an LCD, then rip 'er open, there arent much of any dangerous components.
You might be lucky if this TV has a built-in VCR, as you can salvage some motors to boot.