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Support and repair guides for the Lenovo ThinkPad T480. Released in January 2018.

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Why is there a white rubbery foam rectangle on fan replacement?

So I purchased a few months ago a fan and heatsink replacement for my Lenovo t480 and since replacing the fan it blows cool air however the fan is really loud still making that loud fan air noise whenever I have my laptop on with literally

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nothing running. I bought some thermal paste and went back in to check the fan yesterday and noticed there was a small plastic rectangle sheet on top of a white rubbery rectangle pad that’s attached to the fan replacement they provided me and on top of the sheet was thermal paste but the plastic sheet came off and now it’s just the foam rectangle. Do I need to put on thermal paste on that or is that a thermal pad and I tried running the laptop with just the foam pad and it’s still blowing cool air but still making the loud fan noise when nothings running.

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@lucashendler sure looks like a thermal pad. It should not require any thermal paste. It also seems to work since the temp on your Thinkpad appear to be normal. As for the noise of the fan, I would check the RPM of the fan and see what it is running at and what the temps are. Maybe you just have a loud fan.

Not sure if your Lenovo has monitoring software for the fan and the temps. For the few repairs I do, I use Open Hardware Monitor and/or HWMonitor because those are free. I like free ;-)

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