Consider the following scenario. You have a Windows Vista-based computer that runs Windows Media Center. The computer uses a Phase Alternating Line (PAL) or Systeme Electronique Couleur Avec Memoire (SECAM) TV tuner. You use the Set Up TV Signal Wizard to configure Windows Media Center to use the PAL or SECAM TV tuner. In this scenario, when you view the Electronic Program Guide (EPG) or when you switch channels, you may experience one of the following symptoms:

• Different services have the same channel number.
• A service is assigned an unexpected channel number.
• Some available channel numbers are not assigned to a service. Therefore, there may be gaps between channel numbers.

Note: This problem is more likely to occur with users who live near the border of a foreign country and who can receive services from two countries.

When you configure Windows Media Center to use a digital TV tuner in Windows Vista, you may lose the Electronic Program Guide (EPG) channel listings for some channels. You may also lose the EPG channel listings for the sub-channels of these channels. Additionally, the recordings that you schedule cannot run.

The information in this article applies to the following configuration(s):

• Windows Media Center (Vista)
• Theater 650 PRO
• TV Wonder 650
• Windows Vista 32bit Edition
• Windows Vista 64bit Edition

Symptoms:
When using a TV Wonder 650 or Theater 650 card in Windows Vista’s Windows Media Center application, the DTV (ATSC) portion of the card may not be available. When going through the automatic setup, the digital tuner is not detected or part of the options. When using the manual configuration, you can choose the digital (ATSC) tuner but there will be no channels represented in the channel lists or while watching live TV.