Are you a DIY enthusiast or a renewable energy hobbyist? If you’ve ever encountered issues with your Victron BlueSolar MPPT75/10 charge controller, this repair guide is just what you need. In this comprehensive tutorial, we’ll walk you through the process of disassembling, diagnosing, and fixing a common problem with these popular charge controllers – a blown fuse.
The video begins by introducing the Victron BlueSolar MPPT75/10, a budget-friendly yet capable charge controller that can handle up to 75V solar panel input and 10A of current. Despite its affordability, this unit packs a punch with features like a serial interface for configuration and compatibility with the Victron Connect app.
The disassembly process is meticulously explained, highlighting the challenges of working with a glue-sealed enclosure. Using a spudger, the presenter carefully separates the blue plastic case from the black acrylic back panel, revealing the internal components and the conformal coating that protects the PCB.
Upon closer inspection, the root cause of the issue becomes apparent – a blown 20A automotive fuse responsible for protecting the battery port. The presenter replaces the fuse, and voilà, the charge controller springs back to life, much to the relief of DIY enthusiasts everywhere. But the tutorial doesn’t stop there.
It also addresses a potential design flaw in the terminal arrangement, which could lead to accidental polarity reversal and subsequent fuse blowouts. The presenter offers valuable insights and tips to avoid such mishaps in the future.