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I've been hearing a sound from inside my MSI GE60 laptop for a while now, so I opened it up to find that these two tiny copper waffle squares came loose. They were originally stuck to the board with some black adhesive, so I stuck them on again, but a few days later, they came loose again.
After removing them from the laptop entirely, I haven't noticed any differences in performance, temperature, etc. They look too small to be heat sinks, and they're only attached to corresponding black squares on the board. Needless to say, much searching for "copper waffles on motherboard" and the like turned up nothing at all.
What are they? And what should I do about them?
54They are a heatsink for whatever chip is underneath. – Ramhound – 2016-03-30T02:37:13.460
26They're not copper, they're aluminium painted orange. You can tell by weight, aluminium is very light while copper is quite heavy. Also, copper gets green patina over time, while aluminium stays shiny forever. – Agent_L – 2016-03-30T08:26:26.157
1@bwDraco - What is underneath them isn't all that important just that it requires passive cooling like a heatsink to function. – Ramhound – 2016-03-30T12:50:01.330
3@Agent_L Now I'm wondering why they would paint it orange in the first place. Is it a standard practice? – eyqs – 2016-03-30T19:09:17.983
20@eyqs The process is called "anodizing" to increase corrosion resistance. A dye can be added easily. Often, it's dyed to match product colors, eg Gigabyte blue, Asus black, etc. Generic parts I saw were either left in natural color of dyed orange. I guess it makes them blend better with other copper parts, like the heatpipes on your pic. – Agent_L – 2016-03-31T08:57:20.640
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Contrary to the accepted answer: http://superuser.com/a/1059754/541767. Independent research verifies this, not that it's neccesary.
– wizzwizz4 – 2016-04-02T11:50:08.6905Just curious: Do you also tinker with your car in this way (removing apparently nonessential "broken" parts)? – Reinstate Monica - M. Schröder – 2016-04-02T13:21:08.363
11"copper waffle square" - Congratulations, you have just invented the cutest alternative name for "heatsink"! =) – Nayuki – 2016-04-02T16:36:04.543
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@Nayuki Alternative name? No, that's actually the official name used in the computer repair business: http://i.stack.imgur.com/YSpY3.png
– IQAndreas – 2016-04-03T07:52:31.9433@Agent_L These are actually copper. It's not uncommon for heatsinks to include copper as a material - often for heat pipes and even sometimes as a fin material. Copper is a better thermal conductor, by volume, than aluminum so when space is a tighter constraint than weight it is the material of choice. – J... – 2016-04-03T09:27:25.953
2@IQAndreas Nice try. I checked the link and see that you faked the text. ;-) – Nayuki – 2016-04-03T16:28:08.683
Did the noise go when you removed them – Suici Doga – 2016-07-11T11:06:13.460