I have two hdmi splitters. all devices work except for the ps4. the hdmi splitter starts blinking like it's having trouble receiving the signal. however, the signal will work if the wii u is on as it won't be blinking anymore. I've noticed that some devices are strong enough to connect to automatically without the need to switch to its channel. the ps4 can't seem to do this. when I turn off say the wii u, I lose av signal from the ps4. it's almost as if the ps4 isn't strong enough (used another cable). the box (hdmi splitter) is blinking between two different channels. I've tried different channels and different cables, but nothing seems to work.