How to repair switch mode power supply SMPS - 321 PWM SMPS ic power supply input short circuit

Watch on YouTube https://youtu.be/wZtKAHYiNfo
to watch in detail testing https://youtu.be/xbYZpzwN2PE
i explained practical How to investigate and find the reason in burnt out input section of DH321 SMPS. i found main capacitor burnt out, bridge rectifier short, EMI filter burnt out and open, fuse open due to heavy current flow. after watching this video you can capable to:-
how to #repair #smps
fuse keeps blowing
how to repair switch mode power supply when short circuit at input
if SMPS is dead or no ouput
if SMPS have fluctuating output or output voltage unregulated
if smps have short circuit in output
how to eliminate short circuit
how to troubleshoot #PWM #SMPS #controller when there is no switching from #MOSFET
if SMPS have a whistle sound or excessive noise or excessive heat
how to repair mobile charger
how to repair computer power supply
how to repair laptop charger
how to repair inverter of solar system
how to repair #UPS #uninterruptible power supply

SMPS practical tutorial https://youtu.be/7je0v8AiBB4

SMPS tutorial and practical troubleshooting and fault finding https://youtu.be/E_dQcKAqm38

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Types of Electrical and Eletronics Ccts https://www.youtube.com/watch?v=roYf5a7V5-g
Test Diode With Multimeter https://www.youtube.com/watch?v=Q1AmJZkSzAM
Check Resistance https://www.youtube.com/watch?v=mF1W_MU6jvM
Check Resistance https://www.youtube.com/watch?v=prrD4cBSZKs
https://www.youtube.com/watch?v=8gseVSHUNM8

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