Razer Blade 15 (rz09-03519) motherboard repair - no power
I’m trying to fix this laptop, which suddenly couldn’t turn on. When I keep the power button pressed for 10 seconds I get a white light flashing but other than that, no sign of life. I checked the power adapter, I get 20V. Checked the power pins: everything’s ok. Checked the MOSFETs: they seem alright, I get 20V from drain or source to ground, and 5v from gate to source (25v from gate to ground).
I’ve checked the large capacitors, they’re fine. I often see 3.3V and 5V on the multi, so I’m guessing the power rails are fine.
The components circled on the picture are « shorted », but I don’t know whether they have continuity because they are fuses (red circle) or coils (blue circle).
This is the first time I attempt such repair. I’ve been watching hours of Louis Rossman and Northridge Fix to get some insights, but no luck so far. Any advice would be extremely appreciated.
Also: how can you visually tell an inductor, a capacitor or a fuse apart?