I have a Kinivo 501BN. I had a cheap 3 port switch at one point too that did not work either. I have tried the "tricks" that people suggested with no luck but I think some people have got it to work with various on/off hot swaping techniques... still more of a pain then it should be.
What resolution does your TV run at? I've heard theories that if the TV and switch box are not the same resolution, you can have problems. For example, if the switch box max resolution is 1080p, but the TV max is only 1080i, then you might not get an image on the screen. Again, it's a theory I've read about.
I'm still probably gonna keep the thing. I think I'll fire it up tomorrow night and see what's what.
These are the switch boxes I'm using.
Three of them have four sets of composite, s-video, component, analog audio, digital optical, and ethernet.
The other one has four sets of HDMI and digital optical.
All four boxes let you name each input such as NES, SNES, N64, Wii ect...
