Hi all, just signed up for this forum in the hope someone can help. I bought an Onkyo home cinema at X Mas, second hand, and the sub has started playing up. When I've powered the system on the light on the sub turns blue registering an input from the amp but doesn't give any output, until I unplug it from the mains and plug it in again there is then an audible click as the deep bass kicks in. It does this every time i start it up. It is under warranty through Richer Sounds but I'm wondering if this has happened to anyone before. It's currently with Richer Sounds techs to hopefully rectify. Thanks all.