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Broke a piece off electronics board.

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I was finishing assembling my ultimaker this afternoon and broke a small piece off the circuit board when I was sliding the wooden electronics cover on. Does anyone know what this piece is and what it does? Is it important to the function of the machine? And most importantly can I fix this? I included a photo on flicker.




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You can power up the board just fine without that heatsink but *do not* move any stepper motors until you get that heatsink properly reattached with thermal adhesive. Do not use normal glues, don't get thermal paste. It must be "thermal adhesive". You can't get this at bestbuy but you can get it at some walmarts I think:



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Hah, yeah. I've popped off a few of those. They aren't exactly located in a safe place. Gluing it back in with thermal adhesive is easy enough. Amazon also has self-adhesive 10mm copper heatsinks which are pretty cheap, and if you carefully fit them between the electrical contacts they are a drop-in replacement.



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