A friend has an AV-195TF and has been having an intermittent problem when booting up. Sometimes, the screen only displays the RGB box that says the monitor is working ok and you should check the cable or video card for signal lose. A re-boot solves the problem. He tried another HD15 cable and video card, but the problem remains. I suggested trying a BNC cable but I did not see any monitor switch or selection in the OSD to change to a BNC input. My own 2 monitors are used with a BNC cable and both monitors have a switch to choose BNC or HD15 input. Is there anything that needs to be changed when using a BNC cable on the AV-195TF or does this monitor automatically detect the type of cable being used? Or, is there something else that causes this problem on boot-up?