I spoke a little too quickly. On the PS3 forum quite a few people had trouble with this switch and it seems, according to them, the PS3 would only work on port 5. Plugged everything up with PS 3 to port 5 and all was well. Moved it over to port 1 and nothing. Tried port 1 with the A2 and it worked. Just shifted the SD DVD to port 2, cable to port 3 and decided why not try the PS3 on port 4. It worked. Don't really know why. I double check all connections with PS3 on port 1, but nothing. So as usual, I am clueless. Important this is that everything works. I think maybe the hdmi on the PS 3 is a little quirky because lots and lots of people had HDMI problems with PS3, according to the PS3 forum.