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You are here: Home / Archives for t420

T420 Smooth Surface Touchpad

2016/01/02 by sudo

So, I’ve been repairing some Lenovo T420 laptops recently and a few of them have had really worn touchpads. Unlike the older generation of Thinkpads, the T420 has little dots all over the touchpad, giving it a textured finish.

W520 Touchpad

Textured Touchpad

I’m not quite sure what the design motivation was behind this, but they seem to wear off quickly, leaving the touchpad looking quite unsightly. One of the T420’s actually had a smooth area in the centre of the touchpad that all the dimples had worn off from, which gave me an idea. I wonder if you can simply scrape off the textured dimples?

T420 Smooth Finish Touchpad

T420 Smooth Finish Touchpad

In order to remove the textured surface from the touchpad, you’ll need something ridged but not abrasive. A knife is not a good idea. Use something like a finger nail or old bank card and carefully scratch a the surface layer of the touchpad. On my first attempt this was easy, the dimples had erroded in the centre allowing me to start from there and work outwards towards the edges of the touchpad. I’d assume if the touchpad isn’t in such bad condition simply using friction would yield the same results. By the time I’d finished I had a smooth touchpad, similar to that of the T500 range. There was some leftover glue residue which can be removed using furniture polish sprayed onto a cloth or kitchen towel and gently rubbed over the affected area.

An alternative to this is you can buy replacement touchpad stickers with the texture on eBay or similar – searching for “T420 touchpad” seemed to return plenty of results.

Filed Under: Guides, Technology Tagged With: hacks, laptops, lenovo, t420

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