Note: Most of this information is probably only applicable to households with a Philips TV and DVD player.
Tonight I ran into an unexpected problem. While trying to watch a DVD in our bedroom the TV input was changed from HDMI2 (where the living room sources are connected) to HDMI1 (where nothing is connected). It happened any time I tried to pause or play the movie. In fact, it seemed to happen every time I pressed any button on the remote.
I quickly eliminated the possibility of the DVD remote sending signals to the TV by preventing the IR from reaching the TV. The problem still occurred.
After a moment I remembered another problem we previously encountered in which the DVD player was turning the TV back on a moment after the TV was turned off. I neglect to post about the issue but long story short the EasyLink capability built into both Philips devices caused the TV to turn back on if the DVD player was still on (or was in the process of shutting down). The solution was to turn the DVD player off before powering off the TV (since then I’ve also shut off the available EasyLink options in the DVD player).
Tonight’s problem seems to be related. I disabled the DVD players EasyLink functions. However, even though the TV appears to have EasyLink support the setup menu does not include any options to disable it.
I noticed that when the TV source is changed by the DVD player it always reverts to HDMI1. Before I purchased the matrix switch we only used the DVD player in the bedroom, where it was connected on HDMI1. At that point I realized the DVD player’s behavior hadn’t actually changed. We hadn’t noticed it before because it was already on HDMI1 and tonight was the first time we had tried to play a DVD since adding the switch.
It’s not a true fix, but the workaround was simply to move the incoming living room HDMI connection from HDMI2 over to HDMI1 on the bedroom TV. Now the DVD player appears to operate as expected without changing the TV source.