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Lightning And Computers What Does It Fry?


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26 replies to this topic

#1 cowsgonemadd3

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Posted 26 August 2007 - 12:12 PM

Okay so my church had a bit of a storm that killed half the sound board and a couple of computers. What I want to know is do you think its possible that the lightning just fried the power supplies and went no further? Is that possible? I seem to have thought it was. Anyone know?
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#2 garmanma

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Posted 26 August 2007 - 12:24 PM

Happened to me when I was in the hospital and no one shut down my computer. So far I lost a power supply for sure and possibly a hard drive. Really need to get the p.s. before any more diagnosis
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#3 cowsgonemadd3

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Posted 26 August 2007 - 12:48 PM

I read it can also blow the motherboard. I will ask the guy at my church if I can see the computer tonight maybe.

I guess a simple power supply swop would tell me something. How would I tell if a PS is blown?

#4 garmanma

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Posted 26 August 2007 - 01:32 PM

Other than swapping it out with a known good one, you would need a voltmeter
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#5 JohnWho

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Posted 26 August 2007 - 02:51 PM

Yes, it is possible all that was damaged is the PS.

It is also possible that the systemboard was damaged, the modem if it was plugged in to the phone line, the network card or portion of the systemboard, the video card, etc.

Assuming they don't have backups - sorry, but it seems that that is the more likely assumption than that they do in all too many situations - I would disconnect the HD while attempting to diag the extent of the damage just in case. All of the components can be replaced in one manner or another, but the data, as you probably know, is the most critical aspect of the system.


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#6 boopme

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Posted 26 August 2007 - 07:03 PM

I think the easiest way is with a Volt/ohm meter tester
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#7 solaris32

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Posted 26 August 2007 - 08:54 PM

Would a surge protector protect against something like this?
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#8 cowsgonemadd3

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Posted 26 August 2007 - 09:43 PM

Some girl told me today surge protectors are not made/will not protect against lightning. I know they do protect from lightning because one saved my pc a few years ago.

I did find out what was bad as I asked him. He said it was a video card and a hard drive on the other one. Luckily he said he backed up the hard drive last week! :thumbsup:

#9 BlackSpyder

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Posted 26 August 2007 - 09:53 PM

Surge protects can (in some instances) save a PC. however some aren't big enough to protect against the worst case scenario. i fried a battery charger and portable radio by welding too close to the surge protector and welding is less voltage and amps then a lightning strike. (I think cant remember)

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#10 DaChew

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Posted 26 August 2007 - 09:59 PM

It's quite possible everything is fried or will fail shortly, I wasted a lot of time and money on one. Never again. If you see obvious damage(burn marks, blown components, etc) don't waste any time on it. People harp about static electricity too much!
Imagine the amps that lightning can supply, surge suppresor or not.

one fast blow fuse in a UPS or simply turning off the power strip is the best protection

Edited by DaChew, 26 August 2007 - 10:02 PM.

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#11 DSTM

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Posted 27 August 2007 - 12:42 AM

I use a Surge Protector as the Power here is fluctuating so much.If I see a Storm coming,I swich off the PC and remove the Plug from the Power supply.Works for me. Better to be safe than sorry.















#12 arcman

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Posted 27 August 2007 - 12:52 AM

I've had some clients get away with just swapping a power supply, some clients had all of their internals fried. I've even seen modems scorched out from surges down telephone lines, so anything is possible.
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#13 DSTM

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Posted 27 August 2007 - 01:19 AM

I've had some clients get away with just swapping a power supply, some clients had all of their internals fried. I've even seen modems scorched out from surges down telephone lines, so anything is possible.

Is there anything on the market, to guard against this?















#14 dc3

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Posted 27 August 2007 - 01:35 AM

Most surge protectors will incorporate jacks for you phone as well, these will provide a modicum of protection but if you are serious you need something like a UPS that will have its own power supply which will not allow the surge to go beyond it in most cases. A lightning strike can have voltages up around 1,000,000 Volts and around 200,000 amperes, that's hard on electronics!

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#15 DSTM

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Posted 27 August 2007 - 01:53 AM

Thanks for the info 'dc3' Much appreciated.Was just reading about Lightening strikes and some have been measured at 1 Billion Volts. Scarey. My guess, it's the Amps that would do the frying.

http://www.strikealert.com/LightningFacts.htm

Edited by DSTM, 27 August 2007 - 02:08 AM.


















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