My DVD recently failed too there are no upgrades to Blue Ray.
There isn’t any real advantage in doing this upgrade as the Avant isn’t HD capable.
There is an exchange program/part for the Avant DVD player which is what I did and all working as new again for me.
BTY Thinking about upgrading to BV10 and plugging my PS3 into it
BV10, AvantDVD, BS3000, BL8000, BL6000, BL4000, BL3500, BeoPorts, BC9300, BC7002, CX100s, C75s, Beo4s, BC6000s, LC2s, A9, A8s,