Jerry Stuckle wrote:
Why? Do you know how a TV signal is encoded at the station? How it
is modulated onto the carrier? The operation of the RF and IF strips
in your TV? The frequencies of the local oscillator(s) being used?
How the RF signal is demodulated? How the video and audio are
decoded? How the video is displayed on the screen? How the audio
ends up at the speakers?
Or do you just turn it on and watch your favorite show?
Kinda helps to know how to wire together all the various pieces that go
with a TV these days:
- cable connection
- DVR
- CD Player
- maybe a VHS recorder
- stereo system
- Tivo box
- maybe a computer, Apple TV, or some other Internet Video source
- video game system (or more than one)
Have to understand all those different kinds of connectors and
interfaces on the back of all the boxes, and how to connect 6 different
video sources into 4 different ports.
And, it kind of helps to know at least a little bit about how to track
down why a particular channel is not showing up (say, by going into the
diagnostic menu on the cable box).
Of course you can call up the local Best Buy and pay Geek Squad to take
care of it for you.
But, at the very least, when someone leaves the PS2 feeding the TV, you
have to know which remote(s) you have to fiddle with to switch back to
the cable box.