The Beosystem 5500 can be remote controlled by all later B&O remotes; Beolink 1000, Beolink 5000, Beo4, Beolink 7000, Master control panel 6500, Beo5 and Beo6.
I would suggest to see if it's possible to get your MCP repaired, maybe at your local B&O shop.
Beocenter 9300, Beogam CD50, Beocord 5500, Beomaster 3400, Beomaster 4400, 2 Beogram 4000, Beomaster 8000, 2 beogram 8002, Beovox S-75, Beovox MS150.2, Beovox RL6000, Beovox S-35, Beomaster 6000, 2 Beocord 9000, Beocord 8004, Beocord 5000, Form 1, 2x Beolink 1000, Beo4, MX3500, LS4500. Born 1993.