i recently got a tv in the room in my house where the cable modem is. there is only one cable wire in the room and it originally plugged right into the modem. in order to use the tv we had to get a splitter, so the connection is like this:

cable modem
/
cable
\
tv

the problem is that the tv will work but the cablemodem wont, we even tried using different splitters and switching it like this:

tv
/
cable
\
cable modem

the tv still works but the modem doesnt. anybody know what the problem is? so far we've just used an a/b switch to switch back and forth but i need to be able to watch tv and surf the web