I have a Phillips HDTV 42PFL7422D, with 3 HDMI inputs.
When all 3 HDMI inputs are connect I lose sound signal on any one of the connections.
I have a PS3, Xbox 360 and my PC connected to the TV. For some reason I lose sound signal for any and all of my connections. I thought this might have been a PS3 problem because of past problems I've read about concerning its HDMI, but its not. I disconnected the HDMI connected to the PS3 and connected it my laptop and I still have the same problem.
So far, the only time this problem "goes away" is when I disconnect any one of the HDMI connections, then the other 2 connection work normally.
I don't know if its the fault of the TV, fault of the HDMI cables, or something else unrelated.
It should fix and probably does if I disconnect the PC, but its not a fix. So far I disconnect the PS3, xbox and PC worked fine. Disconnected xbox, PS3 and PC worked fine. I'm still trying to find a fix to fix this so that I can have all HDMIs connected and working.
Whats also weird is if say I unplug the xbox turn on ps3, ps3 works fine, then I plug the hdmi back into xbox turn on xbox, xbox works fine. I turn on the PC (remains plugged), it works fine. So all 3 HDMIs are plugged.