Repairing a 20 Amp Battery Charger | Full Troubleshooting + Repair

In this video I show how to diagnose and repair a 20A battery charger — from safety checks and basic measurements to replacing faulty parts and final testing. I explain common failure points (power supply, SCR/MOSFET, transformer, diodes, filter capacitors, overcurrent protection) and show how to test each component with a multimeter. Watch full walkthrough, follow safety steps, and pause where needed. ⚠️ Safety first: Always unplug the charger and discharge high-value capacitors before touching the circuit. If you’re not confident working with mains voltage, seek a qualified technician. 👉 Watch till the end and don’t forget to Like 👍, Share 🔄, and Subscribe 🔔 for more electronics tutorials. what'sapp (03448708300)