I have had my acer monitor working with the TiVo box, I recently tried connecting an extra device via a hdmi switcher. This didnt works so pluged the acer monitor back into the TiVo box, it just keeps saying no signal. I have tested the connections and cables (hdmi to dvi-d adapter) with the monitor through my pc and it works fine. I also tested it with a hdmi to VGA connection and u would get the start up screen and home menu but no channels. Any sugestions?