Oh, you have a HDMI TV with no remote control? You must have lost it! :D
Fear not, you'll be able to go back to what you had before with SCART, but it may take a bit of fiddling. Before we resort to that, try this ... somewhere on your TV you should have an input selector. The symbol looks like this:
http://pctvcables.com...ges/remote_source.jpg
Note: I know that one's on a remote control, but you should be able to find a similar button on your TV somewhere. Keep pressing that button until you find the channels you want ...