I've seen a few post about this issue but no complete solutions. I just purchased a YAMAHA RX-V471 with 4 HDMI inputs. My old Onkyo did not have HDMI so I upgraded. The Yamaha says it works with 3D so being a discontinued model at a good price I thought I'd try. Well the old Directv 3D channels (which are very few) worked fine with the HR34 directly to the TV and the 3D BluRay directly to TV also. But then I connected the Yamaha to the HR34 and the Directv channels give me a split image on all of the 3D channels. That is a side by side display when watching 3D. Well that won't work but before I give up I better connect the LG 3D BluRay player to make sure. I used the 3D BRAVE movie and it is stunning going from BluRay to Yamaha and into TV. So it DOES pass through 3D. So maybe it is just the HDMI problems on the Yamaha so I switched inputs and AGAIN the BluRay plays 3D fine on either HDMI input on Yamaha but HR34 does not work on any of the Yamaha 4 HDMI inputs. I even tried a recorded 3D show from the HR34 and still have side by side video. So I am sure it's the HR34 box not passing 3D on HDMI or something....what can it be and how can I fix it ??????