I have an old CRT-based HDTV that's pretty awesome for audio and I want to connect an audio source to one of its available audio/video inputs. However, I don't have a video signal, just the left/right audio channels via RCA jacks. This works okay, but when the TV is switched to that specific input, because there's no video signal present, it keeps a neon-green bit of text visible all the time that states the name of that specific input (e.g., "VIDEO 3").
Since it's a CRT and I don't want that text burning itself into the tube, is there a way to build a "dummy load" of some type to trick the TV into thinking there's a video signal attached so that it just shows a black screen? I found one document (about midway down the page) that describes a design using a 75ohm resistor soldered to the two contacts in a standard RCA jack. However, after building and trying it, the TV still displays "VIDEO 3". Either I didn't solder it right, or I bought the wrong resistors.
Are there any other resources I can look up to get this to work?