Problems receiving television signals via the TV Tuner card typically show as either a black or a snowy/static video window in the Apple Video Player.
1. Confirm the cable signal by attaching the same connection, using the same coaxial cable, to an actual television or VCR. If the channel signals can be readily tuned there, then the problem lies in the computer and the following steps will apply.
2. Confirm that "TV" is the selected video source in the Controls window of Apple Video Player. Failure to do so will usually result in a black video window.
3. Open the Setup menu of Apple Video Player and select Preferences. For domestic (U.S.) units, ensure that "NTSC" is selected as the Video Input Standard in this window.
4. Open the Setup menu and choose "Channel Setup...," then select "Cable" from the popup menu labeled "Connection."
5. Click the "Auto Add" button and the software will automatically tune to all of the available channels of sufficient signal strength.
6. Some cable television companies utilize a carrier type called HRC (Harmonically Related Carrier). If the Auto Add function doesn't tune to most or all of the available cable channels using the regular "Cable" selection, choose "HRC Cable" from the "Connection" popup menu, then click on "Auto Add" once more.
Channels of borderline signal strength that are not added to the channel list via "Auto Add" may be manually added by clicking the "Add..." button and selecting the channel number desired from the list provided.