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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...

Sunday, April 5, 2026

Four Beogram 4002 Keypad Restorations

I received 4 keypads recently from various customers. I'm going to restore them using the TangentialLab keypad restoration kit, which is available through the DKaudiolover store. Each keypad had typical signs of wear:


I didn't snap photos of the keypad plate removal process, but it's documented here. Once I had removed the original plate, the next step was to cleanup the frames. Here's what they look like after I scraped off all the glue using a #17 X-acto chisel, then touched up the black paint lines:


Next, I prepared all the replacement back pieces by applying the included adhesive promoter and VHB adhesive:


I completed the restorations by affixing the new keypad plates to the frames. The kit includes some handy alignment parts that make it easier to get it perfect every time:


I then applied the back pieces to each key and the center area:


Restored keypads are a really great finishing touch to any restoration, often returning the Beogram to near its original condition. I'll be returning these to their owners, where they should provide many years of great service.

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