Contact Monster about this. I have never seen a splitter die unless it got water in it. I don't even think DC should affect it -- it should pass DC, short it to ground, or not pass it at all, and either the splitter would fail within hours, or never.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
