Making a cooler for the hard drive.
Theoretically, the cause of overheating of the hard drive can be a poor quality power supply. Or rather overestimate or voltage drop across the bus +12 volts. Even a small deviation from the nominal can expose the electronics to unnecessary stress. After some simple manipulations with the tester, it turned out that this does not threaten us. The voltage drop at full load did not exceed 0.3 volts. Having crossed over and mentally praising Nyenskans for professionalism, I reached into my magic bag. Ten minutes later, an express cooler for the hard drive was ready from the GEMBIRD DL - 39 fan, a piece of thin tin and a connector from a burned CD drive. By analogy with the existing factory structures, the fan cools the hard drive from the bottom (or top). Thanks to the tin casing, the air flow is ejected from the front and rear. I suppose further comments are unnecessary.
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