Just got my son a Yamaha RX -V1500 for Christmas. He says that on the front panel display all input source indicators are lit. Instead of showing the input that is currently playing, all cursors are lit up. All he has is a SIRIUS satellite radio connected via RCA jacks to the MD/Tape input. No other sources are connected. Ever hear of this? The unit still works, but the display seems to be whacked. Any suggestions? Thanks. Mark