Diagnose issues with your Lenovo Legion 5 Pro.
Diagnose issues with your Lenovo Legion 5 Pro.
Your friend lent you a laptop that got damaged, and you’ve checked it out. You found a faulty component and swapped it, but the board isn’t turning on at all—no power indicators are showing, and the cable seems fine. The issue might be with the main power connection or a hidden obstruction. The model is NM-D601 Rev 1.0. Could someone advise on possible fixes or next steps?
It suddenly ceased functioning, changing from working to not working overnight. My friend claimed it was just a matter of time.
This situation becomes extremely difficult to fix. Unless it's due to simple issues like a faulty battery or power supply, the problem likely lies with individual components inside the motherboard. That means you'd need to solder and remove parts repeatedly, which isn't practical.
I’d still want to investigate further because of the unusual voltage readings you’re seeing. The board shows Mvs across all channels, but only the charger port gives meaningful voltage. At the charger you measure 20V (rated), 3.3V and 4V, while the LEDs show around half a volt. What might this mean?
Unstable ground conditions? Keep in mind... Certain laptop manufacturers (though I'm sure Lenovo isn't among them) try to bypass the battery and go straight to the laptop itself. If the battery fails, the device won't power up. That's a frustrating design choice.
Reinsert the battery, connect the charger, but keep it off. Wait eight hours. Take out the battery and check the voltage. This should assist in narrowing down the issue.
I attempted this, yet the battery failed to charge properly. Additionally, I observed that the earlier fixed part is now malfunctioning again, which suggests a short circuit on the board linked to that MOSFET.
It seems like you're expressing frustration about a skill you struggled with. The situation feels challenging, and it's understandable to feel that way.