A:Answer The issue here is that the device is a "splitter," not a "switch." It has a logic circuit inside that doesn't allow only one output at a time.
In the olden days of analog A/V connections, the signal connections between devices were mono-directional, they only sent a signal one direction (from source to output device). In this new - fangled digital age of A/V connections, the source and output devices communicate with each other bi-directionally. Basically this means all devices must be powered up for operation before the splitter will function.
I hope this helps!
