I'm trying to contact Dillen as he seems to be the man for belts. But I think the PM system is not working, or I'm doing something wrong. Would appreciate help at getting in touch...
I bought the Beocord 6500 in 1988 and the 7000 in 1992 but sadly all the belts had become a sticky black goo by 2015. However my jammed Beogram 6500 is now working again thanks to advice from this forum (as I described here