Receiver or DVD problem

JUST TOOK MY BLU RAY IN FOR AN ESTIMATE ON FIXING.I PUT IN IT'S PLACE MY OLD PIONEER DV989 DVD PLAYER.I PLUGGED IN THE HDMI TO MY RECEIVER( YAMAHA  RXV-1900) BUT ALL ICOULD GET WAS PICTURES.I NOTICED ON THE FRONT DISPLAY OF THE DVD IT SAID DVI 1080i BUT THERE IS NO DVI OUTPUT ON IT.I WENT TO THE MENUS AND ON HDMI SET UP IT ALSO READ DVI AND THE AUDIO OPTION WAS GREYED OUT.IF I SWITCH THE TV OFF OR TO THE WRONG INPUT THE SOUND COMES ON. TO CONFUSE MATTERS EVEN FURTHER IF I CHANGE TO A DIFFERENT HDMI INPUT ON THE AMP I GET NOTHING AT ALL JUST AGREY SCREEN.I TRIED  PLUGGING THE PLAYER INTO THE TV AND COAXIAL INTO THE AMP AND STILL NO SOUND. WHAT THE HELL AM I DOING WRONG MY HEAD'S ABOUT TO EXPLODE.