Question Tap into hdmi

[zrm9901]

So I’m planning on leaving the entire motherboard intact for mi simi-portable, and u want hdmi out, is there a way to do this by tapping into the hdmi out for the screen on the portable, then just leave the hdmi out there? I imagine this probably isn’t the smartest idea, so is there a safer alternative or another video output on a Wii U motherboard that I can use? I basically want video to the screen and then stock hdmi out so I can plug it in to our tv

 

[Stitches]

You could use a HDMI switching circuit to let you toggle between using an integrated screen and an external one via a simple push button