Dell Inspiron 3521 no power

LAPTOP REPAIR ZONE. YOU CAN LEARN LAPTOP REPAIR FOR FREE. Tools i use : 👉Soldering station WL HT 210 :  https://s.click.aliexpress.com/e/_Eyl... 👉Sugon 3005D 30V 24V DC 5A Mining Power Supply : https://s.click.aliexpress.com/e/_DeH... 👉Digital Storage Oscilloscopes : https://s.click.aliexpress.com/e/_DD8... 👉UNI-T UT136B+ Digital Multimeter : https://s.click.aliexpress.com/e/_DEB... 👉SUGON 8610DX Heatgun : https://s.click.aliexpress.com/e/_Dn0... 👉Microscope RF4 RF-7050TVW Double-arm : https://s.click.aliexpress.com/e/_Ddj... 👉SVOD 4 Universal USB Programmer : https://s.click.aliexpress.com/e/_DDI... 👉RF4 HDMI USB 1080P 60FPS 4K Camera : https://s.click.aliexpress.com/e/_DEG... 👉Smart UV Curing Lamp with Rechargable Battery Type-C Socket : https://s.click.aliexpress.com/e/_Dmc... 👉BOYA BY-V Professional Wireless Lavalier Mini Microphone : https://s.click.aliexpress.com/e/_DBs... 👉XZZ XINZHIZAO P2 Probe Tip Extra Sharp Multimeter : https://s.click.aliexpress.com/e/_DeV... 👉High-Precision 30V 10A DC Power Supply : https://s.click.aliexpress.com/e/_DDG... 👉RF4 WD165 0.5X 0.7X 0.48X Microscope Glass Lens : https://s.click.aliexpress.com/e/_DFP...