How to Fix a Completely Dead Ductless Mini Split AC Circuit Step by Step! Is your mini split AC not working due to a dead circuit board? In this video, I walk you through diagnosing and repairing a completely dead mini-split air conditioner PCB, addressing common errors like F1 and E5. From testing the IPM and microcontroller to replacing faulty components like the IGBT and capacitors, this comprehensive guide is perfect for DIY enthusiasts and HVAC technicians alike. What you’ll learn in this video: ✅How to diagnose F1 and E5 errors in mini split AC systems. ✅Step-by-step testing of the IPM, capacitors, and microcontroller. ✅How to discharge capacitors safely and troubleshoot short circuits. ✅Replacement and reinstallation of key PCB components. This detailed tutorial will help you revive your mini split air conditioner and save money on repairs. If you’re dealing with a dead circuit board, follow along and fix it yourself! 🔧 Tools Required: ✅Multimeter ✅Soldering iron ✅Hot air blower ✅Flux and soldering tin 🚨 Important Notes: To avoid electrical hazards, always ensure the power supply is disconnected before working on your AC circuit board. Follow the safety guidelines shared in the video. 💡 Support Us On Patreon 👉 💡Subscribe to The Channel 👉 Social Links 💡Facebook 👉 💡Instagram 👉 💡Twitter 👉 #minisplitac #pcbrepair #diyacfix #airconditionerrepair #f1error #e5error #hvactips