I'm an engineering major. I think the least serviceable thing I have designed is my laptop turned server/firewall/'wall mount system thing'/space heater, it had the ribbon cable to the power button break off so I have to take the system off the wall to get to the backside to short out the traces for the power button in order to turn it on. I last saw the backside of the system in april, I haven't fixed it yet since I can't solder SMT stuff very well. In my defense, I haven't taken any actual engineering classes (mostly science, math, and English,) so my design approach amounts to stress testing the machine in excessively rough conditions (read: test the computer's cooling system by running a torture test on it for a week while the computer sits in a closed up car sitting in the sun in the middle of summer,) and making the design stronger if it looks weak.
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