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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...

Tuesday, September 19, 2023

Beogram 4002: Installation of a Brand New Hood and Aluminum Trim

I recently received the hood hinge from a Beogram 4002 located in Florida for installation of a new hood. This shows it as I received it:

Closer inspection revealed what had happened:
The hood developed a fracture around the mouting holes, which is unfortunately very common due to the design choices that B&O made back then. The use of flat head bolts created lateral stress in the plexiglass material. Over time cracks develop and eventually the hood breaks off.
Luckily, there are brand new hood available that are faithful reproductions of the original design, but with a better bolt design, which promises to last longer. These hoods are available for DIY from the Beoparts store in Denmark.
This shows the new hood together with a new reproduction 4002 aluminum trim. In the picture the trim is in process of being centered on the hood with the help of two brackets that I designed for this alignment process:
Once the alignment mark is made on the blue tape it is time to bolt the new hood to the hinge. For this it is best to remove the sliding pads that are under the springs. This gives the hinges more room to move laterally, which makes it much easier to put the bolts in:
Once the bolts are in, the pads can be replaced:
The final step is to glue the aluminum strip to the hood, and then we have a brand new hood for an almost 50 years old Beogram 4002!:
This hood will soon be shipped back together with a Beolover internal RIAA pre-amp and a Beolover Commander remote control system. A very nice upgrade! Beolovely! 

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