I want to buy this power supply Here
It says that it can last from 5-8 years. It can last 5-8 years by using it constantly? Also why do they fail? What component inside them causes them to fail? Sorry for my bad english
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asked Dec 11, 2019 at 20:44
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1\$\begingroup\$ Where does it say it can last 5-8 years? \$\endgroup\$– Eugene Sh.Commented Dec 11, 2019 at 20:47
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\$\begingroup\$ @EugeneSh. oops. It doesn't say that in the description. It says it next to the "Add to list" button \$\endgroup\$– Stelios LiakopoulosCommented Dec 11, 2019 at 20:52
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\$\begingroup\$ OK, I see it "long lifetime upto 5-8 years". So it is how long it is typically working with a typical usage \$\endgroup\$– Eugene Sh.Commented Dec 11, 2019 at 20:53
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\$\begingroup\$ @EugeneSh. but what causes it to fail? What components usually break down? \$\endgroup\$– Stelios LiakopoulosCommented Dec 11, 2019 at 20:55
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\$\begingroup\$ Components wearing? Corrosion? Bad usage? Dust accumulation affecting cooling? Many factors. \$\endgroup\$– Eugene Sh.Commented Dec 11, 2019 at 20:57
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1 Answer
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There is no mention under what conditions (ambient temperature, moisture, load, dust amount, etc) it can last for the given 5 to 8 years. Some equipment are rated in hours total, or years of normal office use when used for 8 hours per day for 5 days a week. Usually power supplies have electrolytic capacitors that just have a limited hours of use, but any component can fail under stress. If you want specifications that define how long a power supply lasts under some given conditions, perhaps search for a power supply that defines them.
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\$\begingroup\$ if i replace bad capacitors and dust it regulary it can last longer? \$\endgroup\$ Commented Dec 11, 2019 at 21:02
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\$\begingroup\$ Maybe, who knows. If it breaks, it might be fixable, or it might not be. At that price, you can ask yourself if is it really worth fixing and do you even get a service manual. \$\endgroup\$– JustmeCommented Dec 11, 2019 at 21:13
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\$\begingroup\$ There are similar power supplies on Ebay that cost considerably less. \$\endgroup\$– BarryCommented Dec 11, 2019 at 21:49
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\$\begingroup\$ @Barry, an old saying comes to mind ...
you get what you pay for\$\endgroup\$– jsotolaCommented Dec 12, 2019 at 2:55