It's a long shot, but try the following:
In Media Center 11, open TV options property pages. On "TV Channels" page, click "Analog Chan" button. In the resulting dialog window, click "Override" button. "Frequency Override" dialog window appears. In the grid,
1. Select a channel by checking the checkbox in Channel Index column. I suggest first try doing it with only one channel until you get some result.
2. Change frequency of the selected channel by double clicking the cell in "Override Frequency" column. You have to experiment with different values. I suggest trying to change in increments of 50000.
3. After typing in a new value, click "Override Selected" button. The program will go through a scanning process. You do not have to wait until it finishes all channels. Just wait until the channel you intend to change is scanned. Click "Stop Scanning". Click "Close".
4. Let TV Channels dialog window finish scanning, or at least finish scanning the channel you are doing trial with. Click the channel and see if it tunes.
5. Repeat with different frequency values, until you find the right frequency, or until you give up.
