I'd like to add my own experience on this.. skip to the end for the question:
At my previous house we had Wii, Xbox, and comcast's motorola HD DVR plugged into the PSC01. The other devices are a DVD player, and a yamaha receiver. 'Monitor out' went to the projector behind the couch.
We had no issues with banding, except the vertical line stuff with the xbox. Now we have moved, and with the same devices, except a new dish vip622 DVR (and a panasonic dvd player not connected to the switcher). With just the DVR on, I see huge veritcal bands, especially on high color shows like the simpsons.
Between these bars it alternates gray-ish and a light green. The bars get more distinct and intense the higher the res.. at 480i it blends more (at 92" it's pretty fuzzy too).
I plugged the DVD into the switcher, got some banding, put it back to the yamaha and no banding. Haven't tried the other devices.. I use optical for audio btw, and I haven't even plugged the wii in yet.
Bypassing the switcher solves the problem. But when using it, disconnecting the cable doesn't do anything (per a previous post), and no other device is ever powered on. All devices are plugged into the same surge protector, and I tried plugging the PSC01 into the wall jack directly, nada.
Now I would hate to spend all that cash on a ground isolator if disconnecting the cable doesn't do crap, so does anyone have suggestions?
More importantly, I have no idea what is good for switchers out there, so if I have to dump this, I don't want to get another crappy one. I heard about the Zektor switches, those any good? Any other ones < $300 or so that are decent, or should I dig deeper into the wallet for something that won't cause this?
Sorry for the long post, thanks!