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Power Supply on its way out?
A more accurate method of determining an undersized or
slowly failing power supply is to use the 3.5 digit multimeter. Measurements made to wires as listed in chart in: http://www.hardwaresite.net/faqpowersupply.html An under powered power supply will see voltages drop to or below limits. If critical power supply voltages (3.3, 5, and 12) are in the lower quarter of acceptable limits, then the power supply may be slowly failing - ie electrolytic filter capacitors are starting to fail. Using a meter in combination with what ric has posted can also demonstrate an under powered or slowly failing supply. Take voltage measurements. Then power down and remove from power unessential components such as sound card, extra disk drives, modem, etc. If voltage returns to limits of that chart, then power supply is probably running on its maximum edge - either because it was undersized or because it is slowly failing. There is no quicker tool to answer your question than that so inexpensive 3.5 digit multimeter. Tool so ubiquitous and inexpensive as to be sold in Sears, Home Depot, Radio Shack, etc. Tool that is essential to reliable computer maintenance. Nick wrote: Sometimes when I switch my PC on it switches off after about 1 second. When I do it again it works as normal. Is this a sign the power supply is about to burn out? -- ----------- Nick |
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