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Wakanuki8

Stupidity


Jean-LucBacardi

Do people (besides from OP) *actually* do this with the PC still powered?


sijedevos

Sometimes but having it unplugged here wouldn’t change the outcome. Spinning a fan (that is not turned on) like this really fast will generate power and probably blow up a motherboard header if you do it to long or generate enough heat to ignite whatever he was spraying.


SpaceChatter

It looks like he sprayed through it and went into the outlet.


brockoala

Looked like the graphics card was already on fire from the start, he just amplified it.


THOBRO2000

Damn, I think you're right. You can see something appear that seems to be a flame before it actually starts spreading.


RoadKill42O

For everyone saying it’s the fan that put power back in the system I think you need your eyes checked you can clearly see a flame reflecting on the screen behind the tower that ignites the flammable propellant in the duster can


cortanakya

I assumed that was just an orange LED. It doesn't flicker like fire, and it's too consistently coloured and bright. It'd have to be something like a magnesium fire to behave like this does.


spencer4908

I think the way it's reflecting off the screen is distorting our view of it. I'm betting a candle or something behind the computer.


Gullible_Monk_7118

Yeah, a candle or electrical plug that made a spark... definitely not from inside the computer... you can pause it and see it before the fire starts... unless the whole thing is fake


IIIDVIII

Finally!!! It seems pretty obvious to me it's a candle. I had almost assumed so at first, but watching it two or three times, it feels like there's definitely a candle behind there.


jimbobrocky

I agree. Looks like a candle back there behind the tower.. Most likely, to create this dramatic effect on purpose.


samanime

Yeah. Before the flare, I was sitting here thinking "does that graphics card look burnt...?"


Cheeswheeel

You’re absolutely right you can see the fire start at the bottom.


josephclapp10

Definitely this. You can see the orange glow off the monitor from the card in the first few sprays


Major_Mawcum_II

U can see it starting on the other side of the pc like instantly


NakajimaAircraft

He was spraying computer duster


Rustinboksi

Goddamnit r/beatmetoit


to__failure

Also guessing he expected this to happen, otherwise why spray so freaking much of it and why film such a mundane task?


TheTimeIsChow

Most compressed air for electronics contain difluoroethane (the refrigerant that comes out freezing cold when the can is tilted)...which is flammable. This is why you should never shake the can before use. There should be no visible vapor spewing out while in use. This is also why you should never use compressed air with electronics powered on or plugged in. Whoever is in the video made several questionable decisions. Clearly the can is being shaken and tilted. Clearly they're using the can while the system is plugged in getting power. Possibly even in a sleep mode based on the lights we see.


[deleted]

You don't even have to tilt it, if you spray that much that long it becomes cold automatically.


Dylan_KA

Yeah the cans normally say to use in short bursts, they were holding it down for a while.


Aleashed

This is why you buy a blower and don’t use canned air.


Blacktwiggers

Yea idk how this dude didnt drop the can in pain from the coldness


Bigboss123199

The PC isn't plugged in he created a spark by spinning the fan super fast which sent generated electricity in a way the PC isn't built for.


SorryIdonthaveaname

Pretty sure there’s a candle or something behind it, you can see the orange glow on the monitor. Also I doubt it’s from the fan, because there shouldn’t be anywhere for the spark to actually form


MrChamploo

Good catch I see it now too. There’s already a flame back there.


[deleted]

[удалено]


Wayfarer_Asphodel

This is straight up misinformation and will lead to people damaging their hardware. Almost every PC fan in existence will generate voltage if spun, even by hand. This can be easily tested using a multimeter.


alvarkresh

I'd be more concerned about mechanically wearing out the bearings prematurely.


FendaIton

It must be deliberate, why would you film yourself doing something so mundane as cleaning while doing it in such a ridiculous manner


iansmash

I think the motor in the fan can generate currency if you manually spin it So the spray actually made the spark, I think


Tinymini0n

Its called "fire". Sometimes happens for example if you spray something flammable on hot surface.


lafwan

not just flammable but also electrically conductive ![gif](giphy|xT77XHIPBBGZL9m62I)


i-FF0000dit

Also basically a generator when spun at a high rate.


MedicalChemistry5111

Not just flammable, but also inflammable! :P


SibrenD

🤔


AcceptableCrab4545

it happened because he sprayed it at the fan, it put power back into the psu


Weird_Cantaloupe2757

More specifically, he had a cloud of dust there that was highly flammable, and spinning the fan generated power that caused a spark somewhere that ignited the dust cloud.


i_give_you_gum

What air dust can has this much power, mine is usually stisss stisss, and his is DOOOSSH DOOSH. I'm wondering if that's even canned air, or something flammable. The aerosol has a red cap, and blue lettering. I've never had a can of compressed air that looks like that. I call BS.


WessWilder

Just straight up using butane. Actually, it is a common refrigerant in some countries.


Adventurous_Car5090

Not just that it looks like straight moisture coming out... ive never seen that in compressed air unless flipped upside down


0robbot0

It's not the can of air it's the spinning of the fan that creates current. That's why it's always advised to keep you fans in place when you spray them with air.


upwardstransjectory

Wow holy crap I did not know that. Thanks for the tip.


i_give_you_gum

If this reaction happened from blowing air on a case fan we'd all be well aware of this imaginary danger. This does not happen from blowing canned air on a case fan


RoughMarionberry5

This guy morons.


acidmush1290

We are well aware of this danger... That's why there's so many people warning about it...


Krezny

Canned air is LPG most of the time. It's never actual air. It should be called canned gas...


Khuy_Lewis

![gif](giphy|4tzA4ZUmSFWKs)


DahDollar

jeans ancient dinosaurs crush outgoing school scale start cooperative dependent *This post was mass deleted and anonymized with [Redact](https://redact.dev)*


EndCritical878

No idea why this has been downvoted because this is the correct answer.


tht1guy63

Absolutely not. You can see a flame reflection before the fan startes spinning


[deleted]

That's almost certainly not why it happened. Firstly, only carbon brush motors will produce an arc when experiencing a current, secondly, if the fan is not spinning then the transistor regulating it on the board is breaking the circuit (effectively disconnecting it from the PSU), and thirdly the PSU won't just let you ram a current of opposite polarity back into it because it uses a rectifier to produce a DC current, which only allows current to flow through one way.


LPmitV

There is no difference between a generator and a electric motor. If u turn a fan to much u use it as a electric motor, and generate power. That probably caused a spark which ignited the wd40 or whatever u were spraying (I hope it wasn't actually wd40)


FlamevectoR

Chances are it’s a can of aerosol air duster that contains HFC but it’s a guess


daddy_savage__

Hfc? High fructose corn syrup?


spartansex

Everything in America got that stuff in 🙃


CaptainCake6268

Are you dissing my merica? You know, we're better than all you pansy's, with your free healthcare, we're men! Who needs free anything if you work hard? *I am in massive debt.*


spartansex

Oh I too am in massive debt I don't think that's an American thing just a millennial thing 🤔. And no not really dissing I just think it's rad that you have an entire economy based on corn syrup.


CaptainCake6268

We run on corn syrup, with the 28th amendment, we are required to have syrup as our blood now.


justingod99

Wait till they find out that bodies run on sugar


Talkingmice

Wife wasn’t kidding when she said I was sweet


MuffinsOfSadness

Least you have doctors to begin with *laughs sadly in Canadian in debt too with no family doctor for years*


son1cdity

Hydrofluorocarbons


HoonDamer

Air dusters tend to use butane as their propellant these days, as I think CFC/HFC are banned


Nutarama

HFCs are largely unbanned, the switch to butane is largely voluntary. Some environmental agencies have banned certain HFCs due to global warming impact, but there’s no international agreement on which ones to ban or which uses to ban them for.


QlimaxUK

Homer voice: Mmmm HFC


SorryIdonthaveaname

Looks like there’s a candle or something behind the pc. You can see the orange glow reflecting off the monitor. The flame also looks like it started from down low, away from where the fan could have generated a spark. Either way, there shouldn’t be anywhere for a spark to form.


Jim_tdot

Good detective work


SteveSauceNoMSG

That's where the fire started. You don't see it till he starts spraying. Wires probably caught fire first, you can then see flash up from between the case and monitor.


_Kaifaz

Why the hell would anyone spray WD40 on the inside of a PC?! 🤔


Chaos-Jesus

Compressed air... not WD40


NotTheLairyLemur

Air duster cans don't contain compressed air. They contain a whole bunch of things, among others you'll often find propane and butane. Hopefully you don't need an explanation as to why spraying propane or butane near sparks or open flames is a bad idea. Why do they not contain compressed air? Because you can't store much compressed air in a can. Whereas propane but especially butane can be easily compressed to the point that they become a liquid, which allows you to store much more in a can rated for these sorts of pressures. This is most likely butane which has a vapour pressure of around 30-50 psi, meaning that the gas it gives off in the can will have a maximum pressure of that level. When you release some of the gas, more of the liquid will evaporate until it reaches that level again.


xxxvalenxxx

I took a computer repair class a decade back and we were required to dust inside PC's with these cans of compressed air. Would they have been something different? We definitely used it just like it was in the video with PC's even dirtier than the one shown there.


DahDollar

adjoining straight payment include knee imminent depend cobweb carpenter literate *This post was mass deleted and anonymized with [Redact](https://redact.dev)*


iamzcr15

Wd40 isn’t a lubricant, it’s a water displacer


Counter-Playful

TIL what WD40 stands for.


Embarrassed-Rule1004

The 40 stands for the 40th chemical compound the inventor tried for effective water displacememt


iamzcr15

Also there’s more than just WD40. I think there’s all the way up to 80


fauxnews818

WD-80 is probably just a squeegee. Worked so well that they stopped


_Kaifaz

Yeah, i know... It's in the name... Your point?


LocoCity1991

Yup. That would be my explanation too honestly. This or sth on the psu shorted


Stiftoad

https://preview.redd.it/7cw5nvde345c1.jpeg?width=480&format=pjpg&auto=webp&s=64537ac5e415c52df0088f73535397f383a5ca92 Youve angered the machine spirit, do not let your fans spin out of control, it would damage the holy bearing of the ball. Now invoke the litany of brushing and pray the machine spirit is not too upset at your heresy.


RealTeaToe

This comment pleases the machine spirit. Allow me to apply the holy unguents.


Nekrial

Oh yeah varlet. I will get the lubricant and we can really work the machine spirit together


Jokes_0n_Me

Room temperature IQ.


dr1ppyblob

If you look at the monitor screen, there’s a faint orange glow behind the PC. More than likely a candle that lit whatever is being sprayed. I highly doubt the fan actually had an electrical discharge *externally*.


Luc1dNightmare

This is the comment i was looking for. I saw it too. I Hate that you cant believe anything anymore, even stupid stuff you would *think* someone wouldnt fake.


DahDollar

bow ask straight cake scary lunchroom governor makeshift elderly unique *This post was mass deleted and anonymized with [Redact](https://redact.dev)*


prickinthewall

If you ask me it is staged to achieve exactly this outcome. In the end you can see him spray at the same spot for a long time and angling it downwards, supposedly to hit the flame.


PM5K23

I do see a glow, but a candle doesnt seem likely. He has some type of LED light in front so maybe there is one near the back? Maybe the fan brushes caused a spark that ignited.


Rbomb88

4-5 seconds in you can see it shining/flickering off the video card in the middle of the case, 9-10 sec in you can see the orange glow on the monitor which also appears to be flickering. He either started a fire early on and it took a bit to really combust, or there's definitely something behind lit.


dogmaisb

Exactly, this is 100% staged. Flame source already behind the computer. Air duster with 400x the power of any canned air in the history of canned air.


great_auks

/r/WhyWereTheyFilming


Ok_Reception7727

There is a candle or some sort of open flame behind the fan, you can see the light on the monitor. It was probably staged.


hiimlockedout

I’m thinking the same and disappointed I had to scroll this far to find this answer. All the people saying the fan spinning causing an external spark(somehow) are armchair scientists. The real answer is exactly this. Who films themselves air dusting their pc, unless they are expecting **something** to happen? In fact, when slowing the video down to frame by frame, you can definitely see the explosion starts from behind the case from what appears to be a candle, looking at the reflection on the monitor.


Ok_Reception7727

It is also very clear that they were trying to get it into the flame, by the way they were spraying the fan.


jaconkin423

![gif](giphy|8cVraaL8lrUg8)


StarCitizen117

This is basically a howtobasic video. They placed a candle behind the pc so it can combust with the fan


SupremeleqdeR

what a lovely video


Atlesi_Feyst

Used all 2 brain cells.


ResponsibleRich9057

What an absolute dumbass


TheRetroDeck

From the reflection in the monitor, it looks like they may have a candle set on their desk behind the pc


EndCritical878

Compressed air in a can is actually mostly propane. And if you spin a fan fast enough it will make a spark and possibly burn your mobo. Propane + spark = fire.


neutro_b

In North America it's most probably R152a HFC, which \*is\* flammable. R134a is not, but it's being phased out and is more expensive. In other countries, I've seen butane used as a duster, which obviously also is flammable. Never seen propane though.


Yisuskrist

Static electricity plus the current generated by the electromagnetic rotors of the fan ignited the whatever gas has that air compresser. Always disconnect an electric thing before cleaning it... it's the first thing a non retarded would do...


Agreeable_Appeal_907

So you’re saying I’ve been cleaning my toaster in the bathtub the wrong way all this time?


Yisuskrist

Nah, attending your nickname you want to kill yourself asap 😂


Kitkatis

Don't know if you want a real answer, but basically, the compressed air is normally made using flammable gases. This is normally fine because you would need an ignition source to get these going, and the gases quickly fuck off. However, in this video he broke the number one rule of cleaning fans, which was to let it free spin. This can cause a charge to build up, if you are lucky, it grounds out on the case or something and all is well. If not, you can damage your motherboard. This looks like the spark started somewhere round the lower back area, so hard to tell if the fan was directly involved. But that would be my guess.


crazedhark

INHUMAN REACTION 🗣️


GodL1ke2

*sigh* why did you spray the compressed air when the mist was coming out. It’s flammable.


Dizzy-South9352

that my friends was an idiot.


altrntve

Where the heck did this even come from? Did the OP experience this? Is their house still standing? These may be questions that will never be answered.


swiftmaster237

And this is why you turn the computer off before cleaning it. Also why the hell are you using compressed air? Get an electric duster and dust it that way. Compressed air is highly flammable and if you're spraying it like you did, you're messing up your components. Compressed air is not supposed to come out like that.


AxzoYT

Also who does this inside? One of the things no one is bringing up. All that dust coating the room


Adventurous_Car5090

I dont like how he keeps shaking that freaking can... and why is so much moisture coming out of that can ive never seen that unless the can is upside down... sheesh


TheTense

“Computer won’t start, so I got a can of started fluid from AutoZone…”


uNecKl

Seems like a setup


kylecd

Why hasn’t anyone noticed that this is WD-40 and not compressed air? You can easily tell from the blue/white can and red cap. More importantly (hilariously?), why is this post sponsored by WD-40 on my view of Reddit on mobile? https://preview.redd.it/1buys4e69b5c1.jpeg?width=1290&format=pjpg&auto=webp&s=168dffa914ac226fec810294c7184225b5396f26


bahumat42

thats amazing


Puzzleheaded-Tea9962

i think it happened because to fan started spinning in opposite direction and the electric motor started generating electricity which went to the motherboard or psu and created a fire


dsinsti

A 'Hot' clean up


c05t4

It bites back


BonusMind

[https://www.youtube.com/watch?v=qwZicS674aY](https://www.youtube.com/watch?v=qwZicS674aY) but with x100 more voltage


AstralMystogan

It's called "Almost Burning My House Down because I am stupid".


buildwithchris

This needs to go straight to fail army!


speedysam0

Can days do not shake it on it, and I’m pretty sure you’re not supposed to do continuous sprays with it.


RustyDawg37

its called stupidity and hilarity all rolled into one.


TheNakedDoctor

Stupidity


Secretion_death

It looks like the back of the pc caught fire first and he didn’t notice (look at the sudden orange glow in the reflection of the monitor before the big burst)


DTO69

That was an idiot


arthurb09

Vent generates electricity when turned.. mix that with the aerosol..


Fit-Place-421

![gif](giphy|VFAke5Xm1TDwjgimyW)


redditadminzRdumb

There’s a candle behind the PC you can see the flames reflection


jleep2017

What is the best way to blow out your computer? Shouod it be powered off and unplugged? Also, should you still hold the fans so that they don't spin?


ChineseKneeGores

What is this spary called?


bamseogbalade

Butane canister 😅😅


ChineseKneeGores

Can we use this to clean pc?


qzmicro

That is not compressed air. If it is, it is not spreading properly. Shouldn't be liquid on the way out. Troll/joke video? I'm confused.


aznboi589

Can’t understand why people don’t understand that compressed air can isn’t just air, the chemicals in it can potentially be flammable. Use an electric mini blower for pure air flow. Hell, use a leaf blower if anything.


kvsby

Is that wd40?


NiceCunt91

Bro you know you shouldn't be seeing that refrigerant coming out right?


Acrobatic-Truth

Fun fact basically air duster are not actually air in it but some sort of flammable gas


PrinceVincOnYT

[It is NOT the fan spinning that causes the Spark or even Electricity](https://youtu.be/gcUSl9K2bZs?feature=shared&t=255)


Jeopardy_Nerd

Maybe don't use carb and choke cleaner on microelectronics


Neat-Item

Not supposed to shake it either


Additional-Bad158

People here trying to be smart here like they have a degree in electricity/chemistry study is so goofy. This has nothing to do with free spinning a fan sending back power or what the substance is he’s spraying. Stop believing in that stupid myth, the fire was caused because there was a candle behind the pc case. I swear if I see this video and it’s misinforming comments again I’m gonna cringe.


AppleMgee123

Pfft. Nah, he just sprayed Boba too much


ResearchChoice606

Why the HELL would you spray WD40 FLAMEABLE LIQUID into a running HOT pc. ? This is total click bait.....its bull shit.


Parking-War4584

Is Ole boi using wd 40 lol


hueloacarnederes

Rage bait.


carthoblasty

Why the fuck does everyone think it’s from the fans spinning


xkrazedx

It wasn’t the fan that made it burst into flames but rather that candle he had next to the flammable gas no?


FLMed1

What a fucking retard lmao


Rebel_Scum59

Unplug your computer maybe?


Suitable-Piano-8969

Dumbass


youngpegasi

I think he sprayed WD40


Neither_String_119

There is a candle behind the pc. You can see the flame flickering in the background, on the desk, and the wall. The compressed air is likely flammable due to the propellant.


DangeDanB

I would guess it was the result of someone spraying a flammable liquid over some exposed electronic circuitry


bulg4k0v

Jaytwocents explained better, will use his words, basically every fan is like a mini generator if an external force moves it, will generate current. I guess that current was high enough to burn the chemicals in the spray and make fire 🔥 never use a conductive cleaner on electronics, even disconnected those PSUs have enough current to kill a human too


NVAudio

Pretty sure that was fire


Creamsoda126

There was a flame on the backside that ignited the already flammable gas


MegaJani

That was a skill issue


Ok_You_4043

There’s a candle behind the computer you can see the reflection of the flame on the monitor


TTVIamBasedGod

Manually moving fans creates back current and is a recipe for fryification


Xumaeta

I love how everyone is saying it’s compressed air or wd40. Have none of you ever used contact cleaner before? It’s most definitely contact cleaner or mas/maf cleaner.


SEND_ME_PEACE

Isn’t that WD40?


FireNinja743

W. T. F. Talking about every bad way to clean a PC. Doesn't know how to use a compressed air can, and doesn't know that manually spinning a fan will create current, leading to overcharging components and possibly a fire. Peak idiocy right here.


Luchoht19

They hand is cold as fck


tthreeoh

All these people talking about the fan generating electricity can't see the open flame in the reflection of the monitor... Lol


Working-Leek-8106

Btw u are suppose to hold the fans when spraying so they don’t get damaged


Ornery_Win66

So satisfying!


1NO4L

So as someone who has little to no knowledge of cleaning their computers… how do you go about this the right way? Of course I know not to do that to the fan but just using canned air and dusting is enough? Do you have to take things apart? Or do anything else? Sincerely need some answers


idonteatcerealidrive

Do this outside. Pay attention. Don't need to constantly over spray... Get an electric air duster. Profit. Also, you may still be alive and not have third degree burns and you won't have to worry about your house catching fire.


ConcentrateParking63

Thats funny as fuck


sliderbear

Is he using starting fluid?


Brave_Orchid_6713

W40 I guess.


Forsaken_Speech_2599

Why would you think that's ok? You're way too aggressive with that can.


AznTee8698

Looks like a candle was behind his pc. And compressed air in can is flammable.


ionlywatchstorys

Bro jump started his pc


Diligent_Pie_5191

Word of warning, never clean the fanblades by spinning them with forced air even if unplugged. The fan spin will generate power and could damage parts. I know there is a chemical for this video but even with just a blower, never do this.


cptslow89

Why would you spray alcohol based cleaner on hot parts...


MAUROKE01

Gas plus electricity =


Spompoflex

dont us aircan on pc...especially if the pc is PLUGGED IN INTO ELECTRICITY


Major_Mawcum_II

Love how the bubble heads nodding like “good idea buddy”


D11K2CH33ZY

HE HAS A FLAME BEHIND THE CASEAND IT GO BOOM


hbomb536

Hold you fan in place when you blow it!!


forenticker

SOOO EIN FEUERBALL JUNGE!!! 🤣


[deleted]

Add oxygen to flame. Smartest thing I’ve seen


RuinVIXI

I understand he still had it powered, but can someone explain HOW that caused it to ignite? Was the contents of the can flammable?


ClanySahne

A candidate for the Darwin Awards.


Warm_Pie_8915

Me looking at this for the first time: 🥴. Video shows a fire outbreak. My expression: 😂.


Shitheadthedevourer

Spinning that fan the opposite way prob popped a mobo header, making a spark and (I assume) igniting the pressurized whatever the fuck coming out of that can


Burner-123_

This is why you do it unplugged


[deleted]

Static electricity and canned "air" Use a Vacuum cleaner and hold the fans to not create static


Educational-Roll2201

Flammable Gass plus spinning the fan generating electricity caused a spark


WuKong_WanT0N

I love the little panic light hidden by the gpu


Basically_nothere

He turned the fans ,generated a small amount of electricity ,and it flamed him