ok weird one docking my refurbished Switch with the OLED dock and getting this on the projector:

No Signal
HDMI 2
Check the cable connection and the input source.
the console does seem to detect the dock. before I order a new one, what can I test at home?
If anyone has had teh same thing and fixed it, Id love to hear what wroked. Ill report back with whatever i find.
I'd rather not buy a new dock if it's something simple... if there's a reset or a specific order to plug things in, please let me know.