My "HT receiver" is an all in one unit that only takes in sound and not video input, or at least I think so.
The component cable used is an after market one, but pretty thin looking. I have the same problem with the stock composite cable. I haven't seen a Wii cable that look too different from mine locally.
I'd hate to get a real HT receiver that output HDMI just to solve this issue. My wife would probably be more so.
