I have just borught a new wirless sensor (can't remeber the make) as the original one broke. The sensor is positioned on my TV stand where the TV is. I play my games sitting on the floor looking at the TV. For my sensor to work correctly i had to set it up so the wii thinks the sensor is on top of the tv not underneath like it actually is. This has been working for me however sometimes when playing mario the pointer won't show up on the screen and then when it does it keeps flashing on and off, then after a while it will work fine. There are no objects between myself and the Tv. Any ideas as what could be causing this?