In the vast world of electronics, some devices retain their relevance and charm despite the passage of time. One of these is the FP-200 / FP-250 power supply, manufactured by the renowned Yaesu-Musen back in 1968. This power unit has been a reliable companion for countless radio amateurs over the decades, providing stable and consistent energy for a wide range of radio transmitters.
Recently, I had the opportunity to work on one of these venerable devices. However, time and wear had taken their toll, leaving the original power transformer short-circuited. Determined to bring this piece of electronic history back to life, I embarked on a complete restoration project.
The first challenge was replacing the damaged transformer. Thanks to my in-depth knowledge of the unit and my expertise in electronics, I designed and built a custom replacement transformer, the 24S85 model. This transformer was engineered as an exact replica of the original, ensuring a perfect fit inside the chassis without the need for any modifications or drilling. Moreover, the 24S85 transformer features a standard 230-volt primary winding, ensuring full compatibility with modern electrical networks.
My restoration work went beyond simply replacing the transformer. I performed a complete series of inspections and additional repairs to ensure the unit was fully operational and safe to use. From re-soldering connections to replacing worn-out components, every detail received attention to guarantee optimal and long-lasting performance.
It’s worth noting that the 24S85 replacement transformer is not only a repair solution for the FP-200 / FP-250 power supplies, but also an opportunity for all owners of these units to preserve and maintain their beloved equipment. Thanks to its precise design and high-quality materials, the 24S85 transformer provides a reliable and durable power solution for vintage radio transmitters.
If you’re looking for a replacement transformer for your FP-200 / FP-250 power supply, don’t hesitate to contact me to order the 24S85 model. With my commitment to precision and quality, you can be sure to receive a product that meets your expectations and brings your cherished Yaesu-Musen device back to life.
In conclusion, this repair and restoration experience is not only a testament to the longevity and quality of Yaesu-Musen electronics, but also an example of the dedication and ingenuity that define the amateur radio community. Whether you’re restoring a vintage unit or preserving a piece of electronic history, the 24S85 transformer stands as an excellent choice to ensure continuous and reliable operation of your FP-200 / FP-250 power supply.




