ARC 400H Welding Machine Chalt-Chalte Band Ho Gaya? 3 Phase Power Supply Dead Repair

In this video, we troubleshoot and repair a completely dead ARC 400 / ARC 400H 3-phase inverter welding machine. We cover step-by-step testing of the auxiliary power supply, checking input voltages, switching components, and finding the exact faulty components causing the machine not to turn on. Timestamps: 00:00 - Introduction & Machine Problem Inspection 02:15 - Disassembly & Board Overview 05:30 - 3-Phase Auxiliary Power Supply Testing 11:45 - Identifying & Replacing Faulty Components 16:20 - Final Testing & Machine Turn On ━━━━━━━━━━━━━━━━━━━━━━━━━━ Contact & Catalogue: WhatsApp: +91 9202821761 Catalogue: https://wa.me/c/919202821761 Follow & Connect: • Instagram:   / mr.techworld   • Facebook:   / mr.techworldak   • Telegram: https://t.me/mrtechworld #Arc400 #WeldingMachineRepair #PowerSupplyRepair #InverterWelder #MrTechWorld #AltmasKhan #ElectronicsRepair