The IR repeater I installed last night, works fine with the old remotes. I do have to point the remote to the top of the TV, where the sensor is located, stuck to the back of the TV at the upper top.
I haven't tried it yet with 3D turned on. It should be ok, since my active 3D glasses uses RF and not IR signals.
The blue light that it comes with, I ran through the hole I made for the upper right speaker wire. It's a bit on the bright side, but it informs me when it receives the IR signal from the remote. Without this, it'd be harder to determine if I was aiming the remote properly. Sometimes during the playback of the movie, the blue light will dimly illuminate during brighter scenes. I may have to either live with this, or see if moving the sensor helps any.
