Repair/Replace keyboard on Sony Vaio VGN-TX
A customer got his vaio all wet. Keyboards are like water magnets. Sooner or later they end up wet.
In this case the water didn’t penetrate further into the motherboard, so the computer worked. It was just a matter of repairing/replacing the keyboard.
Most of the times, if you dry it and remove any residues the laptop works again. The trick is to use alcohol. It dissipates water, and cleans it at the same time.
I took this approach to begin with. So, onwards with the disassembly.
Removing the keyboard is quite easy on this model. Just press the tabs that hold it in place, and lift gently.
If you just want to remove the keyboard, you only have to unscrew one screw.
Now lift-up slowly the upper part. The ribbon is still attached. You don’t want to damage it. In the following picture you can see the water traces. If I was official Sony service, I would void his warranty.
un-lock the socket holder. It snaps open to release the ribbon
Now you’re ready to start cleaning. I dipped the whole thing into alcohol. The cheap blue type. I left it like that for hours.
I then tried to brush-clean between the keys. I used a “special” brush. Very high-tech.
I also wanted to inspect the mobo for further damage.
In order to reach it, unscrew everything that is marked with the ground symbol.
Now use a guitar pick, or an old credit card to separate the casing.
Theeere we go. Sexy electronic innards.
Some traces of water on top of the GPU, but nothing serious.
Nothing on the top cover
In the end the keyboard remained dead, so I had to order a new one from ebay.