Laptop won't turn on (replaced charger and battery)

[erico]

If it is a refurbished product you can likely add a few more years to the length of time it has been in service before refurbishment and resale to you.

The smoked parts are SMD caps, resistors. The traces are toast.

You can use alcohol and and old toothbrush to scrub the section and see more clearly what smoke checked on the system board.

[Harmont]

Hi, Erico. I've cleaned up the burnt parts and made another photo. Not sure if it makes it more clear which component ultimately gave up and exploded.

[Harmont · Accepted solution]

I decided to come back to this forum post, just to wrap the story. I bought a new motherboard from AliExpress for AUD$390 (including delivery). It was quite expensive, because it had one of the top CPUs, as well as a discrete Nvidia graphics chip.

I was surprised to find out that after replacing the motherboard and turning laptop on how quit it was. I thought it just wasn't using CPU enough to turn on the fan. I was shocked when I checked the temperature, it was around 90-100 degrees Celsius.

I was lucky enough to turn it off before it burned another motherboard. It turned out that the fan was dead, which I now replaced. I can't be 100% certain, but I suppose the fan was what caused the motherboard to blow up.

If anyone bumps into this thread, just wanted to say the laptop is now functional and has been running fine for a month or so.

[Harmont]

So the total cost of repairing this was roughly AUD$500, around AUD$100 of which was unnecessary, while I was diagnosing the problem.