Can Tvs Be Repaired If They Get Struck By Lightning
what would happen if lighting hit your tv aerial?
Hello
We had a storm terminal night and I was simply wondering what would happen if your aerial got hit?
Like some people have very tall ones to.
Would all the stuff in your business firm that even is not plugged in to the aerial like radio and computer or laptop also be blown upward?
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Source: https://forums.digitalspy.com/discussion/1019013/what-would-happen-if-lighting-hit-your-tv-aerial
Posted by: rundleyoulge.blogspot.com
Comments
Forum Fellow member
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There is no manner of knowing, equally the effects of lightning can exist very fickle. I had a PC damaged some years back by a near strike (not on the business firm) and it was only the COM ports which were taken out, the rest of it was OK.
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Fire is the most dangerous take a chance; after the initial explosion.
All the stuff plugged in usually gets fried, so I ever unplug aerials when thunder is almost. I accept always intended to fit a big earth strap to my pole, but wonder if information technology would in fact exist beneficial, as lightning has a mind of its own when it decides to laissez passer through brick or copper/steel.
I had a near strike once which must accept hit a nearby phone line when I was on dial upwards. Sparks came out of the back of my computer just only the modem card got fried. The only impairment was that the overload diodes beyond the line shorted out, and removing them restored the modem to full health. Since then I also disconnect the phone line when thunder is heard.
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Forum Member
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Its generally the modem that gets fried in a lightning strike, which leads people to believe that the lightning has been conducted along the phone line rather than the mains, but plain this normally isn't the case. Telephone lines nowadays a high impedance so lightning doesn't propagate very well along them. The reason modems tend to fry starting time is apparently the large voltage spike on the mains raises the local earth potential, causing large currents to flow on pretty much everything. Ability supplies are used to large currents so it does no damage, just signal lines are but designed to take small betoken currents and so the electronics tends to fry.
We had a couple of lightning strikes on the building where I used to work. No electronics was damaged, probably due to the lightning being conducted to world by lightning usher strips, simply big chunks of concrete were blown off the wall where the wet in them had instantaneously turned to steam and expanded.
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I had the pleasance of picking upwardly the pieces a few years agone when my mother-in-law's PC was fried by a lightning strike.
It had been swiched off at the time (still plugged in) and the lightening did indeed come down the phone line (overhead, remote and probably very moisture, an onetime fashion plug-in telephone in the next room was also fried). The on-board modem was completely fried and there was scorching on the motherboard next to the modem menu but all the other components were fine and I was able to rebuild it using simply a new m/b and modem. The RAM and CPU were as well replaced but but because the new board required different ones to be compatable.
It was clear to me at the fourth dimension that having the PC plugged in had probably saved them from a more serious fire as the strike had gone to earth through the PC and mains wiring rather than arcing across the room from unconnected cables/sockets.
Unplugging is no guarrantee of avoiding problems and there take been documented cases of people being injured by arcing from asunder phone and aerial cables. The jury is out on the best course of action but personally I just swich off and hope for the best. Equipment, notwithstanding precious, can exist replaced, lives tin't.
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I wonder what would happen if lightening struck at the moment y'all were unpluging the aerial. :eek:
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As a service engineer I run across this quite a lot, with a direct strike on the aerial it's REALLY, Really bad news.
For a ist of some of the usual symptoms:
1) Aerial melts.
2) Chimney is blown downwardly.
3) Part of roof is diddled off.
4) Everything electronic in the firm that'southward plugged in is destroyed.
5) Much of what isn't plugged in is destroyed.
My younger brothers house was struck the other yr, I didn't encounter information technology every bit he lives far away, but apparently it vapourised a number of the rafters in his roof, and destroyed many of his £22 each manus made tiles. I don't even know if he had an aerial on his roof or non, just it'south non particulalry relevent anyhow.
A number of years ago a garage (belonging to the aforementioned family unit that I work for) was struck by lightning. It wasn't at the tiptop of the hill, it didn't have an aerial on information technology, and it was surrounded on all sides by taller houses with aerial on the roofs.Every wire in the building was blown off the walls, taking the plaster a 1000 either side of each wire.
The chances are incredibly low that your house might be struck, and so information technology's nothing to worry nigh disproportionately.
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A hair raising experience
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Forum Member
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That was the odd matter about my workplace being hitting - it was a 2 storey building with no aerials on the roof, but straight across a narrow lane was a 10 storey edifice with its roof bristling with aerials and it wasn't hitting.
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I went to see a boob tube in a firm that had been struck by lightning. I call up it well. The prepare was a Philips G8. When I first entered the room everything seemed normal,only on closer inspection inside the set everything was black equally if it had been sprayed with pigment. Then I looked at where the aerial had been. All that was left of the downlead was a copper line with a black line on either side of it, along the path where the wire had been. It had been totally vapourised.
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Forum Member
it'll be electrifying. :eek:
.. ill get my coat
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Forum Fellow member
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There's e'er one bright spark isn't in that location :rolleyes:
You lot should exist charged for making former jokes like that - its inappreciably electric current
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I witnessed lightning strike a detached house with a chimney both sides of the gable ends in 1963 it hit 1 of the chimneys and the chimney exploded and vicious through the roof of the bungalow side by side to it.
The occupants said the electric fire in the fireplace flew across the room and all the electrics and appliances that were plugged in were burnt out.
I live on top of a hill and i can come across the welsh mountains and the pennines and iv'due east watched thunderstorms coming from wales sometimes when it gets to us it fizzles out and starts once more when information technology gets over the other side of the hill.
We accept a PMR station 1KM from my location and i think the 4 towers gives u.s.a. some protection.
I have been tv-dxing for many years and x aerials on the roof and the coaxes coming into the house information technology was actually logical to attempt and unplug them all so i never bothered and i never lost any equipment either.
Thunderstorms used to knock the eletricity out very often simply i was told by an engineer that the lines got struck lower down and non at the top of the hill.
Lightning tin can impairment equipment if the strike is shut every bit a freind of mine worked for a video rental company and he said that the aerial amplifiers in panasonic video'southward kept getting diddled later on thunderstorms.
When lightning strikes an object like a tree or a house it vapourises the wet thats why copse plit in half and firm bricks shatter and of any wires and items connected to them will get burnt out,Telephone overhead lines are a adept target as well.
We don't thunderstorms today similar nosotros used to.
andy
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That'due south what happens if the mains ability lines to your house are struck!
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Forum Member
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The reason that taller buildings with aerials are non struck whereas a lower one is might be
becauseof the aerials. A lightening usher should actually be called an arrestor. The idea is that the clouds are positively charged on their underside and if you have a good conducting path to ground, preferably with spikes at the end and then electrons menses forth it and fly off the spikes, neutralising some of the positive charge and thus reducing the chances of an arc beyond happening in that location! That's the theory but I recall golfing in a tempest (yes, I know it's the one fourth dimension when you can abandon) and we were on top of a loma. In that location was a nearby strike and the chap I was playing against looked horrified and his pilus literally stood on stop!
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Gotcha
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Forum Member
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B*gger it!
I'd fifty-fifty seen the fault by a chap further upwards!
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I been transfering erstwhile video tapes to dvd'south and i came across an open university program about lightning and IBA engineering news programs equally well so i i'll be uploading them on you tube shortly.
andy
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I knew someone whose house was struck by lightning about x years ago and information technology wasn't funny. The house was badly damaged and they had to alive somewhere else for a few months while information technology was repaired. Fortunately they were insured.
The house had to be completely rewired and everything electrical had to be replaced.
You may take noticed that many churches have lightning conductors, although they shouldn't really demand them .......?
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Tell that to York Minster!.
It's crucial for a church, considering of the loftier steeples and towers.
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I was suggesting that it might simply possibly display a certain lack of confidence in what they believe in!
It was not meant to be taken literally!
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The phillips G8 i recollect them i threw a couple of one-time chassis abroad final year.
We used to raid those chassis for the selectivity modules for television set-dx tuner boxes.
andy
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I`ve recently completed some research into TV aerials and lightning risk and it was concluded that information technology`s a pretty low hazard. More accurately, it`due south a depression take a chance of damage coming downwardly from your aerial, just (relatively speaking) a higher risk of the resultant mains surge coming upwards your mains supply and damaging whatsoever`s plugged in......
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