Not all are the same and try shorter cables from the BD player to the switch and from that switch to the TV.
Remember we have no user settings here.
I have a Loewe Digital 32 TV-set, which has just 1 HDMI port. So I bought an (4 way) Aten AT-VS481A HDMI-switch to connect my Apple TV 2 and my Humax TV-tuner. This works flawlessly.
But recently I bought a Panasonic blueray player DMP-DP75. When I connect it to the HDMI port of the Loewe directly, there is no problem. But when I use the Aten switch, I only succeed in seeing the movie on the TV screen every now and then.
I have tried all ports of the Aten switch, I have tried various HDMI cables. I also tried a Panasonic DVD player from my daughter. Same result. Finally, I tried an (automatic) 2-way Digitus HDMI switch. Same result. I have phoned with both the Aten and the Panasonic helpdesk, they did not understand what might cause the problem.
It's driving me crazy! Does someone please know what might be the solution? I am sick of pulling in and out HDMI plugs.
Thanks a lot!