How to reverse a CRT picture tube.

[1marcelfilms]

2006 video, still acurate

[jpl3k]

Quick technical question:

I have a 15" Sony Trinitron TV that I'd like to customize and turn into a Phillips Predicta style TV. My issue is that the anode plugs into the CRT on the top of the monitor, so in order to separate the circuit board and the monitor I need to rotate the monitor (this will provide me with the anode length I need). Which wires will I need to switch to achieve this and retain the proper picture while the monitor is upside-down?

[DoReMiForever]

I have heard that picture tubes can explode, is that right?

[1marcelfilms]

I find hamsters scary, high volt, the high sound, the spark sound, glass under high pressure ect.

[phifaces]

For all those who say this is a useless idea, this video is very useful for those of us who want to make a backup camera system for a van or RV. If you buy a decent backup camera system off the shelf, you wind up paying at least $200-500. With this hack, you're in the game for about $75.

[PhasmatisApparatus]

I learned over 9000 things about CRTs from this video.

[Lavinco]

just use a mirror. it's much easier and you can stop looking at the mirror when you are done being retarded.

[rollercoastermaniac2]

did you know you can just press CTRL ALT and down arrow on some computers.

[DracoXul]

Should he have used a equal size wire gauge and a switch that is rated for the voltages and current?

[tweetyaja]

Dont try this with an public computers, Your friends will dont know how to restore them!

[ratmilkcheese]

I'm building a coffee table computer with some spare CRTs this would be great if someone sits on the other side.

[tallyhoman911]

77 likes and 7 dislikes lol

[mikewm9v]

why dont you just leave the thing assembled and turn it upside down ?

[pskittle488]

That's actually kinda funny. Nerdy, but funny.

[oledcrt]

Or you could just turn the monitor upside down.

[TheBearcat222]

test



[johnyz656]

hey good job we did stuff like that in class back in high school! what is the song! great post thanks!

[SINEKT]

1. If you go with al that discharging safety stuff, you're a wuss. I used to play with the flyback all around the place, discharging through stuff and shocking myself :D The current is limited and pretty much harmless and some boards even have a consumption detection circuit so they shut off the flyback in case of short-circuit or current grounding through human body or other resistive objects.

2. Why da hell would you need that ?

[lazzer408]

He missed a step... Putting the Anode back on! ;)

[Oerg866]

@lazzer408 i thought that too but i think he meant that you put it back on after the discharging...

[mjojo1000]

that looks like the same computer monitor that i have whats the name of that monitor

[mjojo1000]

thank you

[mjojo1000]

how can you do this to a television

[deathworm101]

@mjojo1000 Television? The EXACT same steps. The CRT of a monitor or a TV work the same way, so just perform these same steps for the TV.

[TheDonnaEl]

Forgive me, but why would one want to reverse the image on a CRT?

[BobFaulise]

or you could just press ctrl alt down arrow and f4 at the same time

[hitachi654]

only a mastermind can make one of hese but now we have lcds so they dont need 50k volts to make a crappy picture

[YTBYTBTB]

very good :D

good explanation to work!

thanks for posting

[a380rockerfan]

Awesome! ought to try that with a second hand CRT soon. I noticed that there were the yellow and brown wires as well. Would swapping these round flip it horizontally? Could you wire those up to have a horizontal and vertical flipper? That would awesome! :)

[shroomduke]

The picture is only upside down it's not backward so I don't think it would work with a mirror! but it's good to see people are risking their lives for fun lol ... JK, Education in America has been stunted by WarMongers and Monopolies or we would be using these extra CRTs to make the flying cars we are supposed to be driving around today!

[kreeboy411]

Didnt work on my ViewSonic G810....now the monitor wont come on. Dont think this works on all monitors. Good thing they are cheap...going to pick another one up..

^_^

Still...intresting video.

[Tokarev2009]

safe is lol!!!! I made it without ground!!! XD

[merijnwitje]

WE GOT THAT MONITOR AT THE ATTIC!

[insignia1996]

alternatively, in windows xp with a CRT you can press Ctrl+Alt+Arrow Key to do this.

[JosephKrammer]

Ok, now I get it, but this is too much shit for a prank...

[JosephKrammer]

Hey, this is awesome!

What is it good for by the way?

[Rawkicks]

Thank you so much. I just did one is 5 min. Now I can play my xbox 360 on the wall. I just made a projector out of it. Thank you again.

[crazytaz2218]

can u make a vid showing how you made the projector out of it

[AmazingDX]

That testing chart at the beggining scared me... I don't know why but reading old Philips tv service book scares me too :/

[ThisIs2009]

cool :-)

[coondogtheman1234]

4:16 all you really had to do was cut only the red and blue wires and reverse them. all you did for the other 2 wires was cut them and twist em back together. thats according to your caption there. nice little mod there. its just like that april fools joke that YT did where it turned the whole site upside down.

[tomek123kotek]

he cut all 4 for the switch he made

[mig189189189]

Its easier to convert a flat square CRT monitor into a LCD, just by opening a little space in the wall of your room with a strong hammer. Be careful with the electrical wires and water pipes ! You can also do that by adapting your T.V. rack with a frontal dark glass with a black frame to hide the tube box inside! You can make it cheep and the effect is great!

[redSKORPION50]

First thing i noticed when i saw this "discharging" to ground, if you want it to discharge safely, you should have the lead pluged in so you have a ground, no good grounding to a steel chassis that isnt connected to anything.

[deathclock9]

@redSKORPION50 its grounded to itself.

[redSKORPION50]

No, what you will do is equalize the potential voltage difference between the anode and the chassis, which will mean there could still be a difference between the whole unit and neutral/earth, and could still result in a shock.

[kisapedra]

why not just cut the blue and red??

[MSVistasucks]

Too bad you can't do this to a LCD.

[emyandmatty]

bobing my head to this jam

[WindowsAndMacintosh]

Great video!

What song?

What video editing software?

Oh and when you say "Carefully turn off and unplug the monitor"

Carefully?

What are you going to throw a rock at the button and rip the wire?

lol no offence

[brianchris4]

some people love to yank the cables out .. not a good thing to do

[softbluejazz]

Thanks so much for your video!

My son had to replace the monitor in his arcade machine. But the monitor in the machine points up and uses a mirror to reflect the image to the user. With the new monitor, we needed to find out how to flip the image horizontally. Thanks to your video, we know how now!

Keep up the good work!

[ZZSFAN]

A faster and non-geek way:

Flip directly your monitor! ^_ ^

(Don't give me thumbs down, i was jocking!)

[hurricanefloyd1]

@ZZSFAN

Glad you were just jocking, but I am also wondering if you were joking?

[ZZSFAN]

@hurricanefloyd1 yes, sorry... i write "jocking" instead of "joking"

#LOL

[Ravenpulse]

nice

[defcon007]

Good vid with safety considerations shown. Personally, I would advise discharging any high-voltage capacitor using a high-wattage resistor in addition to screwdriver as to dissipate the HV charge in the safest possible manner to ground while avoiding potential arcing damage to the component itself.

[barrydegeling]

lol, same song as one of my own videos :P

[scaleop4]

dont forget people discarge the CRT before you start unless you want a sharp painful shock. ( personal experience it hurts ):

[MSVistasucks]

Your lucky because you could have been killed.

[redSKORPION50]

Not from the deflector yoke voltage you wont. Its not high enough to overcome the resistance in your body.

The CRT anode can kill you, but then youd have to try very hard to touch that.

[triggerhappy77707]

In fact, there is around 1kv present on the yoke when operating. When the magnetic field collapses in the LOPT (flyback) the voltage that 'flies back' is normally over 1kv... The primary is pulsed at around 80 volts and the kickback is the thousands... This is why the HOT (transistor which runs the flyback and horizontal yoke) is rated at 1.2-1.5kv or so. Some newer moniters use high voltage mosfets or IGBTs and use lower primary voltage for lower voltage spikes...

[garrysurrey]

so in the older sets, is that the strange orangy light u can see in the back of the electron gun?

[triggerhappy77707]

If you see an orange light in the back of an electron gun, it is probably the filament. If anything else it glowing orange... That could be a problem :)

Hmm, maybe i should try to use a CRT as a vacuum tube. It works, has the anode, grids, filament, cathodes...

[slamer123]

@garrysurrey The orange glowey light in the back of the tube are the heaters. They heat up the electron guns to help get those pesky electrons jumping from the electron gun surface (which in made from made from the element boron) towards the screen. Basically the heater burns their feet to get them hopping. Well sorta anyways..;) There is really a lot of amazing things happening inside of a CRT. I've worked on monitors for 20 years and I still find them interesting to ponder.

[Mosfet510]

@slamer123 Yup, dem' pesky electrons up to no good I say! lmao

[XELA2T]

@slamer123

I am more a radio than a TV guy. I have a (nice) CRT Monitor where sometimes the pic. becomes much more dark, I then also hear a thin spark. Mostly, giving a small hit to the chassis it will brighten up again. - I know it is diff. from the distance and it could be many things, but from your experiance where shall I look more: Cold soldering at the high tension transformer, or the high tension cable connection, or...?

[slamer123]

@triggerhappy77707 Yep there is about 1000 volts on the horizontal deflection coil pulsing at 15 Khz or more nowadays and about 120 volts on the vertical deflection coil. Touching either one of those will get your attention real quick. Poking around inside of a monitor with the power on may teach one a very hard lesson. I've been shocked by them several times and I remember each time. Monitors are fun to work on. But you need good training to be safe working with them. because they do bite.

[jamesb1221222]

MSVistasucks - ive been shocked by the red wire in a 19 inch trinitron dell monitor. i forgot to ground my screwdriver. it hurt like a bitch. threw the circuit breaker, then i got pissed off and threw the monitor out into the back yard.

[tumidekona]

lol joker!, hahaha its like before and after image!! what u wanted to do, but what happened instead lamo!

[deathclock9]

@scaleop4 yes. yes it does and its scary too.

[SlashFury]

What I find funny about these comments is that when they say their video card supports what he is doing, they are full of crap. Video card software allows you to "Rotate" the screen; his method allows you to actually flip an image, as though you were viewing it in a mirror. This video is actually going to save my project to restore a 6-player X-Men arcade cabinet. Thanks!

[ineurodreams]

Actually, you're very much wrong. A lot of lower end video cards only support rotating the picture. There are quite a few video cards that will support flipping the picture. This is used for rear mount projection applications. Your video card may only support it, but go google it and you'll find plenty of video cards that do support this feature.

[PhxSt0rmz]

You know even I can rotate the image on my graphics card for a LCD monitor...All your doing is feeding the monitor different analog signals...In short, it's no different than if you were to be playing a game, and it turns your screen upside down. Same thing works with built-in graphics cards.

Slash is correct. He says SOFTWARE lets you rotate the screen. BUT! In the case of an arcade, there's no software! So you manually flip it. yay!

[Mercdriver09]

cool

[hellsmaw84]

i could of used that with my projection system i had...

[mrcrtking]

Try swapping the colours round, that plays with your mind as you expect to see grass green not blue and blue sky not green ! I once lit my cigarette off an ark from the EHT cap to the external tube aquadag of an old 1970's tv (great as they never had safley shutdown like todays TV's do)

[WindowsAndMacintosh]

Why not just turn it upsidedown? Cool though...

[123demaio]

he only had to cut the red and blue to reverse the image.. throw it in the garbage boom in the dumpster

[26highstreet]

good video but with limited use in a real world situtations but nicely put together, for those of you with little or no knowledge of high voltage electrics leave well alone or you could be killed

[JQPRILL]

lol my video card software lets me do that

[WindowsAndMacintosh]

lol mine too

[Gerrit22041992]

and i have two monitors and one is upside down, and my video card has the function as well....

[desertman123]

Or you can flip it

[dadburnde]

it not a capacitor charged

its the transformer

the transformer is only positive polarity and it helps draw the electrons to the phosphors on the screen

[ronco36]

yes it is a capacitor its made up of the inside and outside aquadag coating on the picture tube:).

[62studebaker]

Well composed. I am not sure who in God's name would ever want to screw around with 27,000 VOLTS ... but okay! What does it feel like when you get zapped? Hey tfreakvids it's your Sis ... you'll have to re-subsribe to my channel. I think I lost you. C

[mrcrtking]

Try swapping the Red, green and blue wires round on the tube base / guns (may have to cut tracks and rewire) makes for a pretty weird picture.

[LunaticStranger]

No need to cut those wires to make your screen upsidedown.

Just loosen the screw on the deflection coil near the tube neck and rotate the coil slowly, 180 degree.

Try it!

[tommyber120]

but he dident make it up side down he made it mirror turned. but i dont understand why cut all cabels wen he put some off dem back as from the beginning lol. dont need too cut enything. and hey it isent power who kills you when its not conekted too the electrical jacket. you kan also discarge the capisators. just shortcut the capistaor then you discarge it. its just voltage and not eny ampere . it says arning becus your granma may die. and it culd be dangerus fore any who have weak heart

[LunaticStranger]

Yup, but turning 180degrees on the deflection yoke is the safest. You don't need cut those wire. But if you want some hard, why not? But don't put the Horizontal cable to Vertical cable connector or else. It could be messy! And yeah, it is still dangerous even if it is unplugged. Short circuiting the capacitor is a bad idea. I think the proper way to discharge the capacitor is connecting the male plug of your soldering iron on the terminals. But wait! Your soldering iron must be 220v

[RyuDarragh]

You can also pull the pins from the plugs using a pin pulling tool. Looks sort of like a hollow screwdriver. What it does is bend the retaining flange on the pins so you can pull them from the connector. Once you've had your fun, you'd be able to replace them and none the worse for wear. Also, best place for high voltage discharge is on the metal frame of the CRT itself (sse the wire going from the frame back to the circuit frame?) The coating on the CRT is one plate of the HV capacitor.

[pelpois]

lame :/

Dangerous

[julianblonde]

Why not just cut the plug in half (pins are in order) and reverse them there?? Also installing a switch to swap the circuit while it is on is NOT a good idea. You can blow the horiz output real quick this way and was not meant to do so.

[slamer123]

Good post. I was wondering when someone would mention just cutting the plastic on the plug and reversing one set of wires. Thats how it is done in the Arcade games that use mirrors. Also switching the voltage with the power on could cause problems for the transistor

[wisteela]

Brilliant. I was talking to an ex TV engineer about doing this yesterday. Nice to confirm what he said.

[Iwillkillyou35]

Why not just do this in control panel? Am I missing something?

[noeatingallowed]

I used this method on my brain and it worked. Now I can spell and write and breed cats that can rewire particle detectors. Thanks supergeek!

[courageous917]

y did u cut all 4 wires when u coulda just cut 2

[coldnight2k8]

flipping the switch with the power energized may do damage the V-H circuits...

[RockeyDA]

I hnow what you ment by the smoke test. if you mix the rong whiers the moniter frys it self and starts smoking.

[dnl5649]

do you know how to spell wires you dumbass

NO OFFENSE dumbass.

[RockeyDA]

Hay I dont nead to know how to spell evry word. Im goning ot to the 8 grade eny way.

[RockeyDA]

my moniter is diffrend than yours. so when i did it it canged left to rite.

[chikotube]

or you could just flip it on your video card driver and avoid the whole friggin mess and save about a bjillion percent of your time compared to that.

[sorh]

ok.. but you can do this more simplier and well looking by unsoldering the cables on the little board on the crt neck or swaping the terminals on the plug. ;)

[dcmulenga]

iyi video li bad!

[bfeely]

You are supposed to hook the discharge lead to the metal straps on the tube. Hooking it anywhere else could fry the circuits.

[sonybloke]

no that is where your wrong the metal inside the monitor is grounded (earthed)

[bfeely]

Inside the tube is high voltage. The surface of the tube (including the straps attached to it) are grounded.

[Gameboygenius]

sonybloke: NO U!

Sure, the metal is connected to ground, but that doesn't change the fact that the high voltage in the tube will create a rush of very high current which might damage the ground connections or other parts of the circuit.

[SomethingUnreal]

Great work, this is a very informative video.

[electronic26]

yes very informative video

the reverse to cables brown and yellow

[VideoJunkei]

I used to work on sets, and 99% of the time, the thick red wire and the blue wire are horizontal, and the green and yellow are vertical. you can safely swap either of these two pairs, but do NOT cross the pairs!

[LunaticStranger]

You're right!

[codemsan]

when he first rewired it without the switch the pic on screen was bacwards, when he hooked up the switch it was up-sidedown...what the hell!

[paraglidr]

This video itself is not the least bit pointless!

I have another great use for you. I just replaced my RV rear view camera, and that camera didn't have a reversing switch. Now my in-dash monitor has the exact opposite of what you would see in the rear view mirror. Accident waiting to happen. This monitor doesnt have a mirror/normal switch. I will now go reverse my little 5" 12 volt crt in dash monitor and save myself 200 bucks. THANK YOU for the awesome video!!

[paraglidr]

And yes, it worked. the color coding in my little 12 volt black and white monitor was even the same. I cut all 4 wires, soldered on 4 little extensions - in case i had to play around, hooked everything up, reversed the blue and red, bingo. Now have mirror image in my RV monitor. Thanks again!

[megy82]

Thank you! This is a great tool for my chemistry class since we're learning about the discovery of the electron via the cathode ray tube.

[DrLsw]

dude lol i was gonna just take off that connector a few weeks ago with my hands but i decided not to

[viciousdave119]

Wow, that was pointless. The only way to see it normal now is to undo what you did, or put it up to a reverse mirror.

[weirdlookindude]

That's why he put a switch at the back, did you notice at the end of the video he shows you what flipping the switch does? It brings it back to normal.

[weirdlookindude]

Hey dude, don't listen to all these idiots saying "zomg pointless", they don't understand that there isn't any point to this, that this is just for fun and it's straight-out awesome. Only those of us who like to tinker with electronics understand what I'm saying. I just wanted to tell you how awesome this is, next time I run into an old monitor by the side of the curb I'm definitely doing this to it.

[netiMD]

Lol just get yourself a Nvidia Grafic Card and you have software to do that... Much easier way...

[jelleoelle]

Pointless

[asustech007455]

It is a safety precaution to have a in line high voltage resistor between your alligator clips, to prevent voltage spikes! Also you should leave the screw driver under the CRT cup for a few minutes for a proper drain! Plus, this will not work for all CRT'S, some yoke deflection circuits have in line diodes! You did not give proper precautions when working on CRT'S my advice is leave them alone unless you know what your doing!

[ct92404]

That was pretty cool! I did learn something from that...like how to discharge CRTs. I knew they could hold a charge, but I never knew the best way to discharge them. Great job with the video, especially the opening. But I have to agree it seems like a lot of work, and the only thing it might be useful for is a prank. Very informative though, for people who might not know how CRTs and the deflection coils work.

[ct92404]

That was pretty cool! I did learn something from that...like how to discharge CRTs. I knew they could hold a charge, but I never knew the best way to discharge them. Great job with the video, especially the opening. But I have to agree it seems like a lot of work, and the only thing it might be useful for is a prank. Very informative though, for people who might not know how CRTs and the deflection coils work.

[shlingus]

Interesting...but absolutely useless. So much time spent just to make your screen unreadable. Whats a joke without the risk of electrocution though right? i did learn some vital information though - that u shouldn't take off ones cover and then touch their fly with your finger. You've gotta use a screwdriver instead. Thank GOD u told me that! I always like to stick my finger right in the fly. Phew!

[DrMario2007baka]

Hush, every of mobs... It's clearly possible. But the problem is, you will make the microcontroller in video coprocessor circuit go berserk and tune the transformer (yup, the CRT transformer) up and microwave you with X-ray emission. My advice is, don't f*** with it unless you have the prior experiences of DIY electronics. I have experience of running a CRT off a microcontroller board (Don't do that unless you know what you're doing).

[harmonerik]

This is very interesting, thanks.

[exdrx]

ha-ha...you dont have to do all that shit to reverse a video set. all you have to do is when your playing it set it to rewind. seriousally, your gonna end up paying your parents back if you break the computer!

[genericwittyusername]

If only I had found this before set my room on fire by reversing all the wires.

[robglobetrotter]

I think you need to ger out more

[Aviator14]

nuts

[charlieorrin]

i cant realy see the point in this u are a gay

[CaptCamping]

Now kids will try this. Careful

[jbakid]

Shut up everyone. Haven't you heard of knowledge for knowledge's sake? Visit my blog.

[Npeo]

Interesting... It would be much shorter to just video the monitor and then use special effects. Nice documentary though, for noobs, it would be the starter for them...

[kittymessiah]

you're not familiar with crt's are you. Working with a crt would be the last thing a "noob" would want to do.

aka its dangerous.

on another note where would the fun in doing it in software be, many computers have s simple hot key to do exactly that.

[bsmeets87]

so.. tell us, why should we need to flip and mirror our crt screens?.. Did you only make this video to show us how smart you are?

[Corey497]

cut all 4 wires to reverse 2... mmm...

[therealxevious]

Dont try to repeat this amateur shit.

The cables are dangerously underproportionated. Deflection coils are fed with several amps, your 1mm wires can even cause a fire.

[Neon8787]

Jeesus man. People are gonna try this shit if they really want to, why do you have to be such a downer? Perhaps you could be more useful and suggest people use a better grade wire. Better yet, tell everyone what a safer wire to use would be. Shit.

[therealxevious]

Why don't you upload a video of yourself, shooting yourself in the head? People will try that shit. I hope.

[Neon8787]

Such an appropriate response for someone who feels the need to only point out faults rather than be proactive and help or inform.

Besides, how will I upload the video if there's a bullet through my head? :P

[leevonk]

nice

[blah6969696969]

Fun 'n interesting.... I have to agree w/euromarkus about the music thing. Sounds like a gay bar. (I meant that to be funny) A lot of trouble to do. Any point to this as most video drivers will flip the screen if you need it to.

[euromarkus]

Great video, but would have been better, to skip the music and have voice-over rather than subtitles.

[hikira]

i did it to an old one i had laying arownd exept i only used 1 DPDT...my frends got mad at me for it becuse thay culdent figer out wet was going on

[Dranod]

Lol good one, have done this one myself, except i used a latching relay and a 7808 regulator with a reed switch attached and stuck near the degauss coil. The end result is that it would flip if the scren was degouses, as it automatically did when it was resumed from standby by the video card. was quite amusing at a lan party watching people trying to mess with my system.

[spawn2882]

lol... To much effort to pull a joke on my friends...

I say, if they smoke, put some gun powder in their ashtray, the victom will think it's just ashes, going to put their ciggerette out, poof, a puff of smoke will scare the shit out of them when they put it out.