I have a Beogram 3500, but unfortunately, it came without the original pickup (MMC 2). I suspect someone removed it for safekeeping and then forgot about it. The MMC is a specialized stylus and cartridge by Bang and Olufsen. However, production ceased when LPs became less common. Nowadays, there are options like "new old stock," replicas, and refurbished needles available. Yet, they can be quite pricey. Given my situation, I require both a new needle and cartridge. I wasn't keen on spending a lot on a functional turntable from the '80s. So, I approached the issue with a mindset: if the repair works out, great; if not, it's not a significant loss.
Disassembly of the arm and breaking/removing the original (non standardized cartridge socket).
Now it becomes quite messy...
I couldn't find a replacement flexible audio cable, so I improvised by twisting magnet wires together. This also served as a makeshift braided shielding. While there might be concerns about impedances and capacities, my main goal was functionality.
I then came across an affordable Ortofon 5E pickup. I removed the top of the cartridge mounting fixture (the white part) and soldered the magnet wires directly to the cartridge. Although using proper pin connectors for the cartridge is an option, I decided against it. Gluing the cartridge to the arm makes future replacements challenging anyway. Plus, connectors can lead to unreliable connections. Given that we're dealing with the turntable's critical components, addressing poor connections would be a complex endeavor.
After the initial setup, I fine-tuned the cartridge adjustments. It now tracks the record smoothly, and sound is delivered to both channels—achieving my main objective.
I then used black cement from our local hardware store to secure the position. An ice cream stick served as a makeshift spatula, smoothing the surface for a cleaner look.
objectiveWhile the modifications are noticeable upon close inspection, a casual observer might overlook them. Importantly, the turntable now functions well. Despite the extensive use of putty, soldering, and glue, I've ensured that I can still replace the needle with another from Ortofon's OM series in the future.