I recently bought the monoprice HDMI extenders seen here For only $27.90 each when QTY 50+ purchased - HDMI® Over CAT5E / CAT6 Extender Wall Plate (Pair) w/ Built-In Backward IR Channel - Single Port (1P) - White | HDMI Wall Plates . The HDMI extender works with in the following order: -HDMI from cisco cable box to HDMI extender -HDMI extender to co star HDMI IN -Co Star HDMI OUT to TV However,when connected in the following order there is no video or sound: -HDMI from cisco cable box to co star HDMI IN -Co star HDMI OUT to HDMI extender -HDMI Extender to TV I've tried with the co star out of the equation and all works well. I've tried the second set up without the cable box and nothing. Seems to be a problem with the co star connecting to the hdmi extender on the transmitter side. Works fine when on the hdmi extender receiver side. Anyone have any ideas?