Does not turn on after liquid damage_LG gram

Hello,

A few days ago, my laptop (LG Gram 15Z960-GA50K) was liquid damaged as you can see the picture uploaded. The liquid consists of milk, honey, and mixed grain powder.

After noticing this problem, I have dismantled my laptop to disconnect the battery to avoid another catastrophe, and cleaned the motherboard thoroughly with isoprophyl alcohol.

However, my laptop does not turn on unluckily although I turned on the laptop after leaving it to dry for over 24 hours (No LED light on on the power button as well).

I have scrutinized the motherboard to find any burning signs and could not find any sign of them.

How can I save my laptop back?

Please let me help.

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Hi,

Don't know your laptop but I would check around the power input port for any components designated "F" on the motherboard.

These would be fuses and hopefully they would have blown and protected the rest of the circuit.

If you do find any, use an Ohmmeter to check for continuity through the fuse.

You could also use an Ohmmeter and connect it directly across the laptop's Power input (with the charger and laptop battery disconnected) and check if there is a reading. If it shows open circuit then something has gone in the power path into the laptop. (I'm assuming that there are no signs of life at all when just connecting the charger to the laptop)

Without a schematic is will be difficult but you have to start somewhere.

完成的

Look for corrosion. Drying out your machine does not get rid of the water damage. The damage was done as soon as the water hit the components. Now those components have corrosion which is eating away at the connections on the board. Look for fuzzy green components then get 99.9% alcohol and scrub those corroded components clean with a toothbrush. Then you'd need to solder any connections that have been corroded away with a microscope and soldering iron. If you don't know about smd soldering then I would not attempt it. Just take it to your local well reviewed shop and it might be something easy and cheap for them to do. Good luck.

完成的

@jayeff and @iheartmacs Thank you for your comments!

Jayeff, I have checked the power port and it showed it is normal with 19V out to the motherboard. However, I cannot trace it after that without a schematic diagram as you said.

iHeartMacs, I cound not find any corrosion sign so far, because I cleaned the motherboard with distilled water and isopropyl alcohol afterward. Thus, it does not look bad although it is still dead.

Btw, I really appreciate your comments.

Does anyone know a very skillful repair shop in England?

Please suggest me if you have any..

best,

完成的

Hi,

When I said test into the power port with an Ohmmeter, I meant that you should hopefully "see" a resistance reading on the Ohmmeter indicating a circuit path beyond the port into the motherboard.

Checking the voltage at the port will give the 19V voltage reading because if the circuit beyond the port is open circuit, due to a burnt out component you will be reading the open circuit voltage i.e. 19V,

完成的

@ jayeff

Thank you for correcting me. I will try it.

完成的

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