I think the correct answer needs deep understanding of the hardware / technology inside. I do not expect an correct answer from the perspective of an user. It comes out that the circuit of the splitter is different in some countries...; so the topic develops to be more and more technical. If you do not mind, I would appreciate to move it back to electronics.
@JonasStein: The fact that it got kicked over Means electronics.se dosen't want it. I see two user votes and a moderator vote. If I move it back, it will be closed
This is the migration mechanism working as its supposed to.