I am having problems setting the 'video source' on my Atlas DVR/PVR UEI Remote. There are 3 or 4 or the 4 digit codes that get almost everything working (0156, 0154, 0060 etc) but none seem to include the video source functionality. Its all the more frustrating because when I got it a year ago it came out of the box working completely fine, but for whatever reason the codes got changed and now the video source button doesn't work.

When I select the "TV" button, then hit the "video source" button it just jumps back to the "CBL" device button and nothing happens.

TV - Toshiba 27" AF43
Remote - Atlas DVR/PVR 5 device
(Rogers) Scientific Atlanta Cable box.