We have 3 Samsung PN51F5500AF's hooked up to Tivo Mini's on one job site and 2 PN51F5500AF hooked up to Tivo Mini's on a completely different job site. They are hooked up as simple as possible...HDMI out of TIVO Mini into HDMI 1 on tv. Sound is through the tv speakers, we are using the Tivo Mini remote to control the unit. It seems that the units are not correctly syncing on the HDMI signal. We have an HDMI tester that allows us to capture and insert our own HDCP and EDID between devices, and it cannot work. We believe it to be failing to handshake with the tv. We have tried different cables, and the only resolution has been to go component. I hope that Tivo checks into this and comes up with a software fix FAST as samsung tv's are very popular.