Walton Inverter AC Outdoor PCB Repair | Walton AC Compressor Won't Start—Problem and Solution

Walton 1 Ton Inverter AC Outdoor PCB Repairing Bangla | Walton AC Compressor Not Turning On—Problems and Solutions In today's video, we will show you how to service the indoor and outdoor PCB board of a Walton (Megmeet Brand) 1 Ton Inverter AC that came from Chittagong via courier. The customer's complaint was—the indoor display lights up, the fan runs, but the outdoor does not turn on and the AC does not give any cold air. The video shows in a very practical step-by-step manner how to trace the voltage with a multimeter and diagnose the technical faults. ⏱️ Video Timestamps: 00:00 – Initial Introduction and Customer Problem Description 01:15 – Indoor PCB and DC Fan Motor Cable Connection Rules 03:40 – Connecting Positive, Neutral and Communication Wires of Indoor and Outdoor Board 05:10 – Successful Test Run of DC Motor and Indoor PCB 06:45 – Communication Voltage Check (N & S Pin) with Digital Multimeter 08:20 – SMPS Section Voltage Checking (12V, 3.3V and 15V) 10:15 – 15 Volt Driving Line Missing and Short Circuit Detection in Diode Mode 12:00 – 15 Volt Regulator IC (7815) Removal and Fault Tracing 13:50 – PFC Section (PFC Gate Drive IC) Drive IC Remove and Short Remove 15:30 – Successful test run by connecting the compressor to the U, V, W lines! 🔍 What we covered in this video: Indoor DC Fan Motor Connection: Correct pinout tracing of 5 wires (300V DC, GND, 15V VCC, FG, VSP). Communication Signal Check: Check the communication OK by checking the fluctuation of 10V to 20V+ between the N (Neutron) and S (Signal/Communication) pins with a digital multimeter in the DC range. 15 Volt Short Circuit: Solution to the problem of 18V input but no 15V output of the 7815 regulator IC and 0.003V voltage drop in diode mode. Gate Drive IC Change: The 15V line was basically stuck due to the short in the PFC (Power Factor Correction) drive IC. As soon as this ICT is removed, the short is cleared and the compressor starts. (IC Number: 2240 / 4427). 🚚 Address for sending PCB through courier service: If your service center has inverter or non-inverter AC PCB, fridge PCB of any such company—then you can send it to us through courier. We have a complete test setup. Shop Name: Alishop Sales & Service Address: Capsule Market (3rd Floor), Tangail. Mobile: 01680420091 🔔 Don't forget to subscribe! Subscribe to our channel and press the bell icon to learn new AC and fridge electronic PCB board repairing. Like the video if you like it and if you have any questions, let us know in the comment section below! walton inverter ac pcb repair, walton ac compressor not running, megmeet ac pcb repair, inverter ac outdoor pcb short circuit, ac outdoor pcb 15v line missing, walton 1 ton inverter ac repair, ac indoor dc motor wiring connection, ac indoor outdoor communication test, igbt gate drive ic short circuit, 4427 gate drive ic repair, ac compressor not cooling bangla, pcb repair shop tangail, alishop sales and service, Walton Inverter AC PCB Repair, AC Compressor Not Starting, Inverter AC Servicing #WaltonACPCBRepair #InverterACRepair #MegmeetPCB #ACCompressorNotRunning #ACPcbShortCircuit #TangailPCBService #AlishopSalesAndService #ACServiceBangla #GateDriveICRepair