Does anyone know where to get an old Sylvania Flyback

[pomponij]

I rescued this little guy from the trash, it will be my first linear gun Sylvania but when I was a kid we had the same model. Back then my parents' friends always complimented the picture and they would come to our house to watch movies and sports on our 19" Superset. I have always loved these older Sylvanias and mostly collect the early SS sets, however I would really love to get this guy working. It had a shorted HOT and B+ fuse, after replacement when bringing up power with the variac the flyback hums and the HV never starts to come up, I removed it and it rings out bad. The part number is 003618830003 and it crosses to a 483514067118 which sears partsdirect website shows, but after I ordered it about 2 weeks later they sent me an e-mail stating that it's discontinued. I've run into the same issue with encompass parts, who I think bought out Tritronics. I really hate to let this one go because I'm kind of nostalgic about it and I was a kid when my parents tossed our original one. If anyone knows a source for hard to find discontinued flybacks it would help me out tremendously.