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Beolover SyncDrive: DC Platter Motor Replacement for Beogram 4002 and 4004 (Type 551x and 552x)

Late Beogram 4002 and the 4004 (Types 551x and 552x), which have DC platter motors instead of the earlier synchronous AC motors usually suff...

Saturday, December 24, 2016

Beocord 9000: Belt Deterioration

On any old audio gear that requires rubber belts to operate you would expect that changing the belts to be required for a restoration. With the Beocord 8000 through 9000 tape decks that is also true but typically that step has an additional step of cleanup of the old belts. Pretty much every Beocord I have restored has belts that have deteriorated to the point of becoming a sticky, gooey, tar-like mess. I guess it is because the Beocord was stored some place warm for a long period of non-use. These components, like automobiles, do not do well when not used regularly.

Here is a picture of the belt residue found in this Beocord. As I said, this is a very common situation to find. Cleanup involves tweezers, Q-tips, Kimwipes and isopropyl alcohol. I try to carefully pull out pieces of the belts with tweezers wherever I can. Otherwise, trying to grab the old belt pieces with a Q-tip or Kimwipe smears the belt into more cleanup. Pieces of the old belt can be found in various places inside the Beocord.

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