Dell W2606C161. Press the menu button, the remote control or TV and enter the TV menu.2. Select setup and then select channel setup.3. In channel setup, select Antenna/Cable, and then toggle to cable.4. If selecting cable does not resolve the issue, repeat steps 1 through step 3 using each available channel setupoption (HRC, IRC, and Antenna) until you can view all channels.Sleep TimerSleep Timer allows you to select an increment of time after which the LCD TV display turns off automatically. Youcan select from 10 minutes to 3 hoursClosed CaptionIn the Closed Caption menu, you can select on, off, or Mute. If you select Music automatically displays when you usethe mute button on the remote control.You can choose from the following Caption modes.● CC1 through CC4 and TXT1 through TXT4 (CC1, CC2, and CC4 offer standard Closed Captioning and CC3provides closed captioning in a secondary language.)● CC Mute (automatically turns CC on when you mute the TV volume)