this post was submitted on 19 Jun 2025
23 points (100.0% liked)

Ask Electronics

3708 readers
3 users here now

For questions about component-level electronic circuits, tools and equipment.

Rules

1: Be nice.

2: Be on-topic (eg: Electronic, not electrical).

3: No commercial stuff, buying, selling or valuations.

4: Be safe.


founded 2 years ago
MODERATORS
23
submitted 2 days ago* (last edited 15 hours ago) by [email protected] to c/[email protected]
 

I tried to start my laptop earlier, only for nothing to happen. It won't start on battery or when plugged in (it can run without a battery when plugged in). The battery does seem to be dead, and so is the 3V CMOS battery.

I opened it up and noticed a circle visable on one of the inductors. Hopefully you can see it in the picture.

Could this be the problem, or is that normal?

Update: I've tested some suggestion and watched some repair videos, but I found nothing. Goodbye old friend 🥲🤚

Thanks for the help guys

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 10 points 2 days ago (1 children)

Check that the power brick is outputing the right voltage? Also, remove any component that you can and after each one try to start it. Sometimes a bad drive or memory dimm can keep everything from working.

[–] [email protected] 2 points 2 days ago

Great advice, but unfortunately I've checked. 20V from the supply (measured on the laptop PCB), everything removed except the ram because I only have one compatible stick - I did swap the slot though.