Can moderately high voltage Damage a computer

January 13, 2011 at 16:56:46
Specs: Windows Vista
My computer stopped working, then I noticed that lights and other electrical devices around the were going bright and dim. Turns out that the utility company's neutral connection was bad, resulting in widely varying voltages on the 110 circuits. The low I recorded was about 90 volts and the high 145 volts.

If the high voltage did wreck something, what would it usually damage?

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January 13, 2011 at 17:06:29
Most computer power supplies will accommodate voltage variations that you mention, that is providing it is a good quality power supply.

If the computer has an El Cheapo power supply then it might well have been fried. If that is the case it might well have taken out the motherboard as well. The only way to check is with a known good power supply.


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January 14, 2011 at 12:49:55
It would damage the weakest part. There would be no way to know that. Usually parts in the power supply go but any lan or via in board or cap or resistor or chip or the power supply would be suspect.

Why did it take me over a year to phone in a problem to ATT?

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