2005 Dodge Caravan RADIO

MY 2005 DODGE CARAVAN HAS THE RADIO, CD, TAPE, AND DVD COMBO. I GOT INTO THE VAN SUNDAY AN THE RADIO WOULD NOT WORK NO POWER TO IT OR THE DVD PLAYER. ALL THE FUSES CHECKED GOOD. TODAY I GOT IN THE VAN THE RADIO WAS WORKING UNTIL I DECIDED TO PUT A DVD IN THEN IT SHUT OFF AGAIN. I CALLED TWO DODGE SHOPS BOTH TOLD ME THEY NEVER HEARD OF THIS HAPPENING THE BUT ONE SAID THEY WOULD PERFORM A DIAGNOSTIC TEST. DO YOU HAVE ANY IDEA WHAT THIS IS AND IS THERE A WAY I CAN FIX THIS MYSELF.