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Laptop repair (MSI 1035 OEM) saved money again

Today I repaired my laptop.
It was not working anymore, completely dead.
Here is a link to the manufacturer : http://www.msiwhitebook.com/product_spec.asp?model=MS-1035

It is an old one, it does not support Virtualbox, but runs Debian just fine.
I like it because it has a 17" screen, nice to work in bed, full size keyboard too.

Searching for problems without any schematic is just gambling so I postponed it.
I found a YouTube channel by Louis Rossmann who repairs laptops, https://www.youtube.com/channel/UCl2mFZoRqjw_ELax4Yisf6w
and he got some schematics from a website : laptop-schematics.com

I ordered my schematics for about 10 euro. I got 57 pages of PDF.

I had to take apart the whole laptop to get near the actual hardware.

I took my time, did not break any plastic tabs off.. And after what seemed like an hour I was where I needed to be.

I started at the beginning, the power input and verified it. 19.14 volts.
At the end of the cable, without load 18 volts... weird stuff.
I looked at the schematic and found the correct page :


I traced it down to a bad soldering. That was all.


The solderings on the ferrite were bad. A little solder and heat fixed it.

Connecting everything back together, and testing : hooray we have a light and a fan spinning.



After putting it back everything was fine.


Most often it is something small. The only problem is finding the information.
Until next time. 
Greetings, Edwin van den Oetelaar

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