Ethernet failure:lightning strike

hello
my first post...is there a pci slot ethernet card that will work with my G4.
lightning zapped my ethernet connection and also my partners PC,but she got a new card for £5.00
otherwise its a new logic board.
regards

Get yourself a Surge supressor that has Ethernet dataline protection. I use an APC Back-Ups 750. Ever since I installed that between my cable modem and my broadband router, I haven't had a single piece of hardware die on me (Knock-on-wood...)
Of course all my PC's and my Cable Modem, Router, and Switch all are connected to APC battery back-ups for power as well.

Similar Messages

HDMI, Headphone Jack, Ethernet port doesn't work after lightning strike

I have a Mac Mini mid 2011 model. After a recent thunder storm/lightning strike the ports mentioned doesn't work anymore. Do I have to replace the whole logic board to get it working again? What are my options in fixing the mini? Luckily, I'm currently using a Thunderport to HDMI, a USB adapter for sound, and USB to Ethernet for internet. The mini still starts up as well as everything else, but those three ports were hit and are no longer responsive.
Any suggestions or ideas would be greatly appreciated.

Unfortunately. This is why I never leave my computer plugged in to power or electrical devices when I leave the house in any sort of unpredictable weather situation that may include lightning. There is no surge protector that can protect against a direct lightning strike.

Lightning strikes fry PoE modules?

I have several production facilities that I oversee. One Friday one of these facilities had a series of thunderstorms during which roughly 20 IP phones quit working as well as the plants internet connection. The ports where my IP phones are connected were reporting:
"Apr 17 09:20:47.968 CST: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi0/41: Power given, but Power Controller does not report Power Good"
We moved the phones to different ports and they were all working fine once moved. We tried resetting two of the switches and reconnecting phones to their original locations to no avail.
While the phones were connected if I did a "show power inline" those ports were showing faulty. This locations ASA also lost its internet connection due to a port getting shorted out as well.
My question is this, is it possible that there was a lightning strike to the plant that backfed surplus electricity through my ethernet network that would cause this action? All of the affected devices were connected to a UPS that was also doing power conditioning and surge suppression.

I checked the error message and most of the times resulted to be hardware failure.
So to me it feels "yes" lightening could have caused some issue
Please get the switch replaced if reload did not help.
Hope this helps
***** Please rate useful posts*********
Thanks,
Madhu

Lightning strike on G5 - need some advice!!!

Hi - had an electrical storm recently and a lightning strike on my house which terminated, amongst everything electrical, my beloved G4 and G5 PowerMac. The G4 is fried and doesn't even turn on. As for my G5 (which has all my info and pictures, etc - and yes my backup disk was fried too, and my surge protector!!!) - it still turns on, I get the chime, the hard drives spin etc. Once I changed the USB port connection, I got the keyboard and mouse working as well. The only problem is that I have no video signal. I have zapped the PRAM via the keyboard and the button (under the RAM modules) and tried starting up from a boot CD. Any ideas what I should do next/replace/etc?
Many thanks
Christian

2nd that would be on my list:
CyberPower CP1350AVRLCD Intelligent LCD Green UPS - 1350VA/810W AVR 8-Outlet RJ11/45/Coax
http://www.amazon.com/gp/product/B000OFXKFI/
Protect your modem, router, RJ45, and equipment (along with G5 of course)
Some people use a ZeroSurge front-end as well as they are one of the best conditioners and solid protection.

AP1252AG Power Injector - Ethernet Failure Radios still UP

Hi All,
please can somebody help?
I was doing a simple test today with 2 AP's, both AP's are powered by Cisco Power Injectors. I was expecting that my client would simply switch association from one access point to another if I disconnected the ethernet cable of one AP (breaking the network connection). What I noticed was that the Radio's of the AP which has it's ethernet cable unplugged were still authenicating clients. i.e clients were authenticaing with radios of AP which has it ethernet interface down.
Please can somebody tell me whether there is a command that will cause the radios to shutdown in case of ethernet failure, thus forcing clients to try to find another AP
Regards

Hi,
Thanks for reading my post, I've found the command, which shuts down the radio if the ethernet goes down:
ap(config)#interface dot11Radio 0
ap(config-if)#station-role root fallback shutdown
ap(config-if)#end
ap#
ap#
ap#sh ip inter brie
Interface IP-Address OK? Method Status Protocol
BVI1 XXX.XXX.XXX.XX YES NVRAM up up
Dot11Radio0 unassigned YES NVRAM up up
Dot11Radio1 unassigned YES NVRAM administratively down down
GigabitEthernet0 unassigned YES NVRAM up up
ap#
Unplug the Ethernet cable from Switch
*Mar 1 00:08:28.523: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0, changed state to down
*Mar 1 00:08:28.527: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to reset
*Mar 1 00:08:29.527: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
*Mar 1 00:08:30.527: %LINK-3-UPDOWN: Interface BVI1, changed state to down
*Mar 1 00:08:31.527: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI1, changed state to down
ap#
ap#sh ip inter brie
Interface IP-Address OK? Method Status Protocol
BVI1 XXX.XXX.XXX.XX YES NVRAM down down
Dot11Radio0 unassigned YES NVRAM reset down
Dot11Radio1 unassigned YES NVRAM administratively down down
GigabitEthernet0 unassigned YES NVRAM up down
ap#
Plug Ethernet Cable back into Switch
*Mar 1 00:08:56.975: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0, changed state to up
*Mar 1 00:08:56.983: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to up
*Mar 1 00:08:57.979: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
*Mar 1 00:08:58.983: %LINK-3-UPDOWN: Interface BVI1, changed state to up
*Mar 1 00:08:59.983: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI1, changed state to up
ap#sh ip inter brie
Interface IP-Address OK? Method Status Protocol
BVI1 XXX.XXX.XXX.XX YES NVRAM up up
Dot11Radio0 unassigned YES NVRAM up up
Dot11Radio1 unassigned YES NVRAM administratively down down
GigabitEthernet0 unassigned YES NVRAM up up
ap#
This Works....
Regards

Lightning arrestor handle a direct lightning strike

can lightning arrestor handle a direct lightning strike and discharge this energy to a properly installed earth ground?

Yes, it can....A good ground must be attached to the Arrestor. This can be accomplished by use of a ground lug attached to the Arrestor, and a heavy wire (#6 solid copper) connecting the lug to a good earth ground.

Ethernet port fried by lightning strike?

My phone line and home was struck by lightning this weekend. All of the DSL filters in my home were fried and blown open simultaneously, the DSL modem was fried, and even with a new modem, I cannot connect. Is there any way (without taking it in) to test the ethernet port itself? Is there some sort of internal diagnostic that can detect a faulty port? The computer works fine otherwise. IF the port is dead, is it better to buy a new computer? (My insurance is covering all damages), or is the cost to repair something like this minor? I have read about using an airport as a go-around, but I'd rather fix the problem, not patch it. ANY and all info will be helpful. Thanks.

caparsons wrote:
My phone line and home was struck by lightning this weekend. All of the DSL filters in my home were fried and blown open simultaneously, the DSL modem was fried, and even with a new modem, I cannot connect. Is there any way (without taking it in) to test the ethernet port itself? Is there some sort of internal diagnostic that can detect a faulty port? The computer works fine otherwise. IF the port is dead, is it better to buy a new computer? (My insurance is covering all damages), or is the cost to repair something like this minor? I have read about using an airport as a go-around, but I'd rather fix the problem, not patch it. ANY and all info will be helpful. Thanks.
If the Ethernet port on an iMac is fried, you can replace that port only by _replacing the entire motherboard_. Depending on the kind of motherboard, the price could be several hundred dollars. It might be more cost-effective to get a new computer.

DHCP not issuing IP System Preferences/Ethernet failure

I have 10.4.6 running a dhcp connection and it stopped recognizing my ethernet connection one day. I have troubleshooted it and zapped pram not been able to get it to recognize when my ethernet is plugged in or system preferences to recognize ethernet as an option, even when I configure it to.
I see this is pretty common. Does anyone know what to do?
Thanks
David

Since I just got through installing a replacement NIC for a customer, because lightning took out his factory ethernet interface, I thought I might share.
We knew lightning had struck, because all of the network devices were disabled. On the Mac that got damaged, the ethernet interface failed to appear in the hardware list of the System Profiler.
If you're not seeing any adaptor, and you're reset the PRAM, then it's possible your adaptor was damaged by external forces. Could even be from a static discharge. In that case; for $5, you can install a new network interface card (NIC). Be sure to read Tim's posts about generic cards that are supported by Apple's standard drivers (don't require a driver).
Then again, you may have a completely different problem!

H520 ethernet failure

Hi,
My H520s recently developed an issue with its ethernet connection. My configuration is that I have a Netgear Gigabit switch between my modem/router and the Lenovo H520s machine. The H520s is running Windows 8.1 (upgraded from Windows 8).
The problem suddenly appeared that the ethernet connection will connect - then after < 10 seconds it will declare that the network cable is unplugged and reconnect - then last for < 10 seconds again and repeat, so the wired connection is effectively useless.
I have tried another machine (netbook) using the same ethernet cable and it stays healthy.
If I tell the network device in the H520s to set its speed to 10 or 100 M, then the H520s maintains its connection - so it is usable if I am willing to accept the downgrade in local traffic speed.
Has anybody experienced this?
Does it sound like a simple hardware failure?
I am a little reluctant to go and update drivers after a fiasco I had last time (the driver I have is provided by Microsoft, dated 10/05/2013). Are the latest drivers trouble free?
Thanks in advance,
Keefe

Welcome to the Lenovo Community !
I'm not an owner of your model, but the first step I would try in resolving the problem would be to uninstall the ethernet driver, reboot the computer and then install a fresh copy. It is possible that there is some corruption with the currently installed drivers.
In the event you feel that your on-board ethernet is failing you can always install a PCI-e ethernet card provided you have an available slot for it and just disable the on-board ethernet controller in the BIOS.
Owner & Operator of the following:
● Lenovo Ideapad Z570 w/ Win 7 & Win 8.1 Dual Boot ● Lenovo Yoga 3 Pro w/ Windows 8.1 ● Toshiba A75-S206 w/ Win 7
● IBM Thinkpad T-23 w/ Win XP ● IBM Thinkpad T-22 w/ Win XP • As well as multiple desktops dual/triple booting XP, Vista and Win 7.
★ Find a post helpful? Thank that member by clicking on the ☆Star☆ to the left awarding them a Kudo.
★ Posting a problem and a reply is helpful and it answers your question, please mark it as an "Accepted Solution"
★ I'm not a Lenovo employee, just a volunteer geek who likes to help folks. Enjoy your time here, pay it forward by helping others !
★ Sorry, I don't answer questions via Private Messages. Posting in the appropriate forum is the best way to get assistance.

IPod blamed for teenager's lightning strike

Could this really happen? Regardless of what the experts say?
"A 17-year-old Colorado teenager blames his iPod for being struck by lightning while mowing the lawn. Jason Bunch says the current from the strike traveled through the headphone wires of his iPod, burning his ears, cheeks and side. The Denver post reports: “The wounds follow the line of his iPod, from his ears down his right side to his hip, where he was carrying the device. The iPod has a hole in the back, and the earbuds dissolved into green threads. Bunch and his mother believe the iPod acted as an antenna, drawing the lightning to him. There were tall pine trees nearby that didn’t get hit.” Weather experts, however, say that is unlikely. “There is no scientific evidence to show that lightning is ‘attracted’ to items like an iPod. However, if someone wearing earbuds is struck, current may travel along the wires into the ears,” said Gregory Stewart of the Denver-based Lightning Reference Center. “There are documented cases of lightning traveling through wired telephones and killing the users."
Source: iLounge.com

Could this really happen?
It DID happen.
Regardless of what the experts say?
The experts didn't say this didn't happen. They did say the iPod is not what caused him to get hit by lightning.
However, since he was wearing it when he go hit, the electricity simply took the path of least resistance - the wires - which are made specifically to conduct electricity.

Another Ethernet failure?

Hi everyone
I've read a few posts in this iMac forum about Ethernet problems. I also took to heart the comment by one poster: network problems are solved by 'divide and conquer'.
For a couple of months, I've been cursing our isp here in Portugal for a gradual slowdown in Internet speed. We had engineers in to fix one problem with the line, but my connection remained slow. However, over the past couple of days I've determined that this is actually a problem with my main machine (iMac G4, 1.25GHz).
An iBook connected by cable to my Conceptronic ADSL router runs nice and fast. I record a surprisingly good 3.2 Mbps using www.speakeasy.net/speedtest.
My iMac shows poor modem speeds on the same test: 40-50 kbps. With Appleshare over the Ethernet (100MB) it was going to take 30 hours to copy a 500MB file. This is very slow -- and things used to be better. It looks like there is a problem with my Ethernet hardware or, perhaps, a general speed problem with the iMac.
I've reformated the HD and reinstalled system software (10.3.x and 10.4.x) and the problem remains.
My question is: what is the likelihood that the iMac's networking systems would partially fail in this way? And how can I test for failures of this type? I live in rural Portugal and the thought of finding a good Mac repair shop leaves me cold At very least I'd like to be able to approach a shop well-armed with information. I've used Net Monitor to show that Ethernet activity goes in bursts with longish (a second or so) periods of no data transfer at all.
Has anyone seen anything like this before?
Tks
Steve

OK. I've learnt some more about this problem. It looks like it's something to do with my iMac not playing well with the router (Conceptronic C54APRA). If I place a switching hub between my iMac and the router, voila I'm back up to speed (3000+ Mbps). It's a workaround (especially as my hub is originally from Japan and I need a transformer to run it here in Portugal). But a lot nicer than a new computer
I know very little about the complexities of Ethernet. How can this be? Are there settings I can make in my router or system to get these two to play better? Or should I just give up (and perhaps get an Airport card for the iMac and dispense with all the wires once and for all...
I'd appreciate any hints!
Steve

Post-Lightning Strike: No Sound

I have a 5 year old 15" MacBook Pro (2.4 GHz Core 2 Duo). We had a tree behind our house struck by lightning, and we were close enough that several things in our house got fried: TV, washing machine, my 23" monitor, the 85 watt power supply for my laptop, and curiously, it looks like my sound is dead. Both the power supply and monitor were connected to the laptop in question which was asleep at the time.
The volume icon in the menu bar is grayed out. If I do anything with the volume/mute buttons, it shows full volume and a circle with a slash through it. If I open Preferences/Sound/Output, it doesn't show speakers, just optical digital-out port.
So my question is, for all you hardware experts, have you ever seen something like this where the sound is blown but the rest of the system seems OK? Is the sound integrated into the system board, or can it be replaced seperately? I haven't noticed any other problems with the system, and it has been rebooted since the surge. Unfortunately my house is in major disarray and can't be lived in with a giant hole in the roof and water damage, so it's going to be several days before I can dig out my Tech Tools disc.
Any thoughts are appreciated, and thanks in advance!

One additional bit of info: I just did a Permissions repair and a Verify Disk, the Verify seemed fine. The permisions repair showed something interesting, which I think is not related, but you never know:
Repairing permissions for “Macintosh HD”
Group differs on “Library/Preferences/com.apple.alf.plist”; should be 80; group is 0.
Repaired “Library/Preferences/com.apple.alf.plist”
Warning: SUID file “System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent” has been modified and will not be repaired.
Permissions repair complete
Based on another post that I saw after I posted this, I'm going to do a PRAM and SMC reset shortly, we'll see what happens.

How to reset after a lightning strike?

Lightning struck near my mother's house (which is 2500 miles from my house.).
I'm going to try and help her get the airport running again (over the phone) but am wondering what the best steps are to troubleshoot. I realize it may be done for, but what to help her give it a try....
Thanks

Pull the round power connector from the back of the AirPort Extreme, then pull the AC plug from the AirPort Extreme's power cord from the AC wall jack.
Count to ten
Plug the power cord back into the wall AC jack, then plug the round power connector into the back of the AirPort Extreme
Allow a full minute for the AirPort Extreme to restart
If things are OK, you will either have a green light, or a slow, blinking amber light on the front of the AirPort Extreme.
Green indicates that things might work OK, assuming that the modem or other associated products were not damaged.
Blinking amber indicates a setup issue and AirPort Utility will be needed to identify and troubleshoot the issue.
Solid amber, or no light at all indicates that the AirPort Extreme is done for

Ethernet failure

My built-in ethernet recently stopped working. I changed cables, attempted connecting via cables that were working well for other machines, rebooted routers, hubs, my machine etc- even ran disk utility on my machine. No luck. (I can still connect via wireless but cannot get to Appletalk printers/ervers on the local network. That may be resolvable through tweaking settings on the wireless router. However, that's not today's issue). Assuming at this point that the internal Ethernet port had met is death, I then purchased a D-Link ehternet PC card and loaded the software etc. It performs the same as the built in ethernet which is that is self-assigns itself an IP address , but never gets one from the router and does not ever show the router address in the network control panel. Changing IP addresses to manual and filling in the settings gives me a green light on the network status page (this is true for the built-in and the D-Link card), but no actual internet access.
This leads me to believe there is some system level corruption possibly at work here. If the internal card was toast would not the D-Link card solve that problem? Why can I get an IP address via wireless but not ethernet? Any ideas out there would be greatly appreciated.

This is thread purports to have a solution to the Ethernet problem being reported in this forum. Haven't had a chance to check it out yet, but thought I'd post a link for others to see:
Supposed Ethernet Fix
They say shutting the PowerBook down, unplugging power and removing the battery for 10 and then resetting the PMU seems to solve the issue. Hope so!

When lightning strikes

Well I unplugged the power cable and forgot the modem line. The pop I heard verified it. Sounded like a firecracker.
Well my modem isnt working and my audio ins and outs are gone as well as my firewire ports.
Itunesplay button doesn't work guess it sees there is no audio out port now. FCP will not start up due to no firewire port either.
System profiler says there is a modem hmm...
It will not "restart" by itself so I have to shut down hard... but it will shutdown own its own with a command.
Well any thing to try to get my audio ports back ?
Thanks
Tony B

I would take it to an apple retail store and see what they say about applecare, and new motherboards. I don't think that lightning is covered because it is "an act of god". This is how the iBook manual puts it.

Ethernet failure:lightning strike

Similar Messages

Maybe you are looking for