I need to go from Resolve 9 to the HDMI out of a Decklink Extreme 3 connected to a consumer LCD TV so the client can watch without peeping over my shoulder, but for the life of me I can't get it to work. I've never tried doing this before, is it even doable?
If you meant Decklink Extreme 3d, then yes it is possible. Try to make sure that you are using a correct HDMI out on the decklink break out HDMI panel, that your internal HDMI cables are not lose inside the computer chassis and that you are driving the correct signal that your consumer screen can understand. Ie you might be having a 24 fps project and configured your resolve video monitoring to put out 23.976 yet your screen will only understand 59.94, then you would want to chose a 1080PsF as a monitoring signal.