Can't answer your question, but I ran across the following info on a web posting (hometheaterhifi.com) dated March 2005:
"Authorized repairs and upgrades for older Jadis units in the United States are available from Ron Cox in Colorado (970-882-2530). Like Brooks Burdan, who carried Jadis for many years, Ron knows Jadis backwards and forwards and makes all repairs with Jadis parts. People on the East Coast can work with JadisÂ’ other knowledgeable authorized repair/upgrade person, Avis Brand (516-671-8310)."
I can't vouch for this info, but maybe it will get you where you need to go.
"Authorized repairs and upgrades for older Jadis units in the United States are available from Ron Cox in Colorado (970-882-2530). Like Brooks Burdan, who carried Jadis for many years, Ron knows Jadis backwards and forwards and makes all repairs with Jadis parts. People on the East Coast can work with JadisÂ’ other knowledgeable authorized repair/upgrade person, Avis Brand (516-671-8310)."
I can't vouch for this info, but maybe it will get you where you need to go.