Trace the Circuit & Draw Circuit Diagram | Step Down Flyback Converter | Ep #1464

In this video Trace the Circuit & Draw Circuit Diagram | Step Down Flyback Converter | NB2 JL7K2VS SMPS IC | Ep #1464. Step Down Flyback Converter PCB Tracing & Schematic. PCB Reverse Engineering. How to Trace SMPS PCB and Draw Circuit Diagram. PCB to Schematic In this video, I trace the complete PCB of a Step Down Flyback Converter and convert it into a detailed circuit diagram (schematic). This SMPS power supply uses the NB2 JL7K2VS switching IC. I explain the circuit section by section, making it easy to understand how the flyback converter works. In this video: ✔ PCB tracing step by step ✔ Convert PCB into schematic ✔ Step Down Flyback Converter analysis ✔ NB2 JL7K2VS SMPS Switching IC ✔ Primary and secondary circuit explanation ✔ Transformer connections ✔ Feedback circuit analysis ✔ Power supply troubleshooting tips If you enjoy electronics repair, SMPS circuit analysis, reverse engineering, and PCB tracing, this video is for you. 👍 Like | Share | Subscribe Haseeb Electronics #FlybackConverter #SMPS #CircuitDiagram #PCBTracing #ReverseEngineering #PowerSupply #ElectronicsRepair #NB2JL7K2VS #CircuitAnalysis #HaseebElectronics You are Invited to Join Haseeb Electronics    / @haseebelectronics   You may check other videos :- Replacing Heating Element in WELLER DSX80 Desoldering Gun    • {1213} Replacing Heating Element in WELLER...   Vestel Power supply working and troubleshooting    • {1216} Vestel Power supply working and tro...   Electric steam iron repair    • {1218} Please Write your opinion for this ...   Reverse polarity & Overvoltage effect on Polarized capacitor    • Reverse polarity & Overvoltage effect on P...   IGBT Inverter welding machine repair    • {1279} IGBT Inverter welding machine repai...   SMD zener diode Identification    • {1210} SMD zener diode Identification   measure Low value resistor Using NULL / RELATIVE function    • {1217} Use NULL / REL function to measure ...   Reverse polarity & Overvoltage effect on Polarized capacitor    • Reverse polarity & Overvoltage effect on P...   Electric Room heater fan repair - not providing hot air    • {1202} Room heater fan not providing hot air   Testing Darlington transistor    • {1195} Testing 2N6283 Darlington transistor   Inercomp PT300 Truck weight scale repair    • {1186} Truck weight scale repair   You can Follow me on :- Instagram:   / haseebelect   Facebook:   / haseebelect   00:00 Step Down Flyback Converter, Video Overview – PCB Tracing & Schematic 01:20 Flyback Converter PCB Overview / Input AC Section Explained 05:10 Bridge Rectifier and DC Bus / Startup Circuit Analysis 08:45 NB2 JL7K2VS SMPS Switching IC / Current Sense Resistor & Source Pin 12:30 Flyback Transformer Connections 14:40 Auxiliary Winding & VCC Supply 16:30 Feedback Circuit Without Optocoupler 18:25 Secondary Rectifier & Output Filter 20:05 smps switch mode power supply Circuit Tracing 24:05 SMPS circuit testing and troubleshooting