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Multiple Power Supply Failures

By kevink ·
I have a Gateway 1400, Pentium 4, 1400mhz, 128mgb ram, 40gb HD, Windows ME, purchased 12/00. So far, I have had to replace the power supply on this machine twice in less than a year. I suppose it could just be a run of bad luck but I suspect thereis something else going on with this machine. Does anyone have any idea as to what could be the cause of repetitive power supply failures?

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Multiple Power Supply Failures

by isys In reply to Multiple Power Supply Fai ...

I would stick with the surge-related cause. Inside the power supply is a device called a metal-oxide varistor (MOV) that acts like a fuse. When a surge exceeds its capacity it blows and removes the input power. It usually looks like a small green capacitor with radial leads across the input power line. And, under laboratory conditions, I have drawn 75 (that's right, seventy-five) amps from the 5 volt supply of a standard 250 watt power supply. This is possible because in a switched power supply the load is totally isolated from the source. You might want to invest in a small UPS, which would give you the isolation of a very good surge protector and the capability of a graceful shutdown in case of power outage.
Look here:
http://www.howstuffworks.com/power-supply.htm
for more info. It consists of several slides. It also has info on surge protectors.

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Multiple Power Supply Failures

by kevink In reply to Multiple Power Supply Fai ...

Thanks, will do that.

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Multiple Power Supply Failures

by kevink In reply to Multiple Power Supply Fai ...

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