I have a Panasonic Plasma tv TX-P50C3B. I've connected a 3 way HDMI cable to my Humax Freesat, Philips soundbar and LG Dvd players.I have to click from tv to HDMI1 in the AV menu on the tv three times before it recognizes the equipment.
Does it do the same thing without the 3 way splitter? If not, you can check with the vendor or the splitter you are using, but I doubt you will get any solution.