You do have a point so the following is on the way to you to look into:
Beogram 8002. Only fault at the moment is my wrong theory.
Beomaster 6000. Only fault to notice is a shutdown if the volume reach 30. Maybe the overall tone balance needs adjusment. Speakers used are Beovox M150 in excelent working condition (service not needed, and not shipped)
Beocord 8000. The drive belt was rotten so nothing big.
I'm looking into how and who to use for sending. I will send you a pm when its done.