yyrkoon 250 Posted August 19, 2015 Share Posted August 19, 2015 (edited) Our internet had been down for ~ a week because "god" decided he wanted to decap / let the blue smoke out of a realtech chip in our PoE ethernet switch we had in a remote location.( it's how we bounce internet back to us ). https://picasaweb.google.com/106867156582775247949/August192015 I'll try to get a better picture, but unfortunately I do not have a macro lens for my DSLR . . . Edited August 19, 2015 by bluehash [ADMIN] Added image. Quote Link to post Share on other sites
yyrkoon 250 Posted August 19, 2015 Author Share Posted August 19, 2015 Here we go, a much better picture. https://picasaweb.google.com/lh/photo/hGoYnI8XzbtjpUR5WJht3tMTjNZETYmyPJy0liipFm0?feat=directlink Quote Link to post Share on other sites
spirilis 1,265 Posted August 19, 2015 Share Posted August 19, 2015 haha, how does that work when you're off-grid? Lightning strike on an exterior power feed? Quote Link to post Share on other sites
bluehash 1,581 Posted August 19, 2015 Share Posted August 19, 2015 Our internet had been down for ~ a week because "god" decided he wanted to decap / let the blue smoke out of a realtech chip in our PoE ethernet switch we had in a remote location.( it's how we bounce internet back to us ). https://picasaweb.google.com/106867156582775247949/August192015 I'll try to get a better picture, but unfortunately I do not have a macro lens for my DSLR . . . Huzzah! You get the smoke award! yyrkoon 1 Quote Link to post Share on other sites
yyrkoon 250 Posted August 19, 2015 Author Share Posted August 19, 2015 Huzzah! You get the smoke award! lol ! @@spirilis well our internet has to come from a grid tied source right ? Our internet is actually DSL thats bounced back at us about a mile away. EDIT: So to answer more fully. Our internet comes from a neighbors property. They're on grid. We had about $300 worth of wireless / network gear over there. The PoE switch, which was $200 USD ( netgear PoE switch ), and a WDS router. Which communicates with a WDS router on our end. Both died, but the WDS routers are only like $99 each, and they're also garbage. The WDS routers are also MAC linked which would make spoofing / waring our routers very difficult - But not impossible. Theyy are jammable though . . . anyway, the WDS router over there suffered the same failure ( decapped chip), but it was not as spectacular as the PoE switch. Also for what it's worth. The missing bit on that chip was vaporized . . . e.g. no where to be found inside the case. spirilis 1 Quote Link to post Share on other sites
yyrkoon 250 Posted August 19, 2015 Author Share Posted August 19, 2015 Also interesting to some perhaps. During full blown monsoon season here our routers routinely get reset by static discharges from lightning strikes in the area. Generally, if they're within a couple miles, our routers reset. Taking lightning strike photo's has become a lesser hobby of mine - Well since before living here, but here there are many times when I can get several a day. Quote Link to post Share on other sites
L.R.A 78 Posted August 19, 2015 Share Posted August 19, 2015 Holy!That reminds me when a friend blew up a LD298 H-Bridge, it looks almost like a bullet ricochet on it. The max I did was once with a LD293 that cracked in half because I reversed the polarity. Barely touched for a fraction of a second but still did that damage.Was that really a lightning strike? Quote Link to post Share on other sites
dubnet 238 Posted August 20, 2015 Share Posted August 20, 2015 @yyrkoon you may want to take a look at this article. Although it is a bit dated, for lightning prone areas it still might be a good answer. http://circuitcellar.com/cc-blog/a-real-world-look-at-lighting/ Condensed version of article http://circuitcellar.com/wp-content/uploads/2015/08/CC90-1998-CiarciaBachiochi.pdf Full article in PDF format. Quote Link to post Share on other sites
yyrkoon 250 Posted August 20, 2015 Author Share Posted August 20, 2015 Holy! That reminds me when a friend blew up a LD298 H-Bridge, it looks almost like a bullet ricochet on it. The max I did was once with a LD293 that cracked in half because I reversed the polarity. Barely touched for a fraction of a second but still did that damage. Was that really a lightning strike? Yes. ON a transformer next to or just down the street from the location. Not sure which, was fixed by the time we got over there. Quote Link to post Share on other sites
spirilis 1,265 Posted August 20, 2015 Share Posted August 20, 2015 It sucks you blew the equipment, but I highly approve of the artistic result! LOL yyrkoon 1 Quote Link to post Share on other sites
yyrkoon 250 Posted August 20, 2015 Author Share Posted August 20, 2015 It sucks you blew the equipment, but I highly approve of the artistic result! LOL Funny story. The first thing I thought about after seeing the chip blowout was taking a picture and sharing it here. I figured others would appreciate it too Not often you get to see the results of a PCB / chip being effected by a lightning strike heh Quote Link to post Share on other sites
jp430bb 8 Posted October 29, 2015 Share Posted October 29, 2015 "Absolute maximum ratings exceeded" I lost an ethernet chip to a lightning strike once. The rest of the motherboard worked fine for years afterwards. Quote Link to post Share on other sites
tingo 22 Posted October 31, 2015 Share Posted October 31, 2015 Revelation: you managed fine for (about) a week without internet. yyrkoon 1 Quote Link to post Share on other sites
yyrkoon 250 Posted November 1, 2015 Author Share Posted November 1, 2015 Revelation: you managed fine for (about) a week without internet. I feel like a Junky though when my internet goes away . . . as I rely on it heavily for documentation, and such. Quote Link to post Share on other sites
yyrkoon 250 Posted July 27, 2016 Author Share Posted July 27, 2016 @@bluehash Maybe time for 2x award . . . as our "new" WDS router took an act of god decapping too . . heh. This one blew out in the center of the chip, after the lightning strike burned up a cap, which then arced to the case, and blew a chunk of casing out of the center of the Atheros chip. Well was actually closer to one corner of the chip, but you can see the processor die . . . I'll try to get a picture up in a couple of days. But this strike also took out the transformer at the location as well as "popped" the fuse on the pole. The power company is just now considering putting a blade( lightning rod ) on the pole after 3 years consecutive strikes on the same pole . . . but it being so arid here, it can sometimes be hard to get a good solid earth ground. So we'll probably see how that works out next year Quote Link to post Share on other sites
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