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RE: Re: A Technology Trivia puzzler.

Subject: RE: Re: A Technology Trivia puzzler.
From: "Monty Brigham" <>
Date: Wed, 10 Jul 2002 07:56:29 -0400
I had s similar experience. Lightening passed through my area and fried
my computer. I took my computer to my friendly service provider who
quickly found one damaged resistor. He replaced the part and things
worked fine thereafter. One piece of advise was turnoff your computer
when a storm approaches. There is no protection from a direct hit.

-----Original Message-----
From: oryoki2000  
Sent: Wednesday, July 10, 2002 2:52 AM
To: 
Subject: [Nature Recordists] Re: A Technology Trivia puzzler.


My guess:

Lightning strike to telephone pole 
sends voltage spike via phone lines, 
frying phone section of surge protectors 
with a snapping sound.  Surge protectors 
shunt high voltage to ground. Your Mac 
had a second path to ground via the 
external SCSI HD.  A ground loop is 
created, sending extra voltage along 
the SCSI bus and damaging the internal 
SCSI card.  Voltage differential in 
multiple paths to ground confirmed 
later with VOM.


--oryoki




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