HOW TO Start & Reuse A Computer Power Supply WITHOUT A Computer | PC ATX PSU Upcycling

Today, we show you how to kickstart and reuse a ATX PC computer Power Supply Unit (PSU) WITHOUT a computer. Old PC computer power supplies make great power supplies for projects! They come with good overload and overheat protection built-in, and commonly offer out of the box 3 output voltages: 3.3 volts, 5 volts and 12 volts. But, getting them to work outside of a computer can be however a little tricky since when taken out of a PC, they may not even start at all! So, if you have never seen it, let me show you why and how to fix it / make it work.
► NOTES
► Several IDE and floppy drives connectors, a 20-pin P1 molex, a 4-pin P4 molex to support Pentium 4 power and a 6-Pin P2 connector, no doubt we are dealing here with an ATX power supply version ATX12V1.0.
► I'm using three 12-volts halogen light bulbs to test if we get power on the 3.3 volts, 5 volts and 12 volts rails.
► Different power supplies may have other requirements for a stable voltage supply: minimal load required on 3.3V, 5v or 12V rail, ""voltage sense function, ... so, check out the documentation of your ATX power supply.
► DISCLAIMER
Always make sure you operate in a safe and secure manner.
Playing eletricity can kill real bad.
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
► SUBSCRIBE (weekly content)! bit.ly/Subscrib...
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
► CATCHUP! All Videos bit.ly/AllTheLa...
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
▼ CONNECT!
► Facebook: bit.ly/CauseIHa...
► Twitter: bit.ly/LikeASheep
► Instagram: bit.ly/Narcissi...
► Tumblr: bit.ly/AnotherC...
► Pinterest: bit.ly/SniffDaM...
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
▼ MUSIC
► ""Hurts So Good Blues"" by Unicorn Heads
► ""The Quantum Realm"" by The Whole Other
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
╔══╦╗╔╦═╦╗╔═╦╗╔═╦══╦═╦╗╔╦╗╔╗
╚╗╔╣╚╝║═╣║║═║╚╣║╠╗╔╣║║╚╝╠╗╔╝
═║║║╔╗║═╣╚╣╦║║║║║║║║║║╠╣║║║═
═╚╝╚╝╚╩═╩═╩╩╩═╩═╝╚╝╚═╩╝╚╝╚╝═

[@SteveH-TN]

Thanks sharing this information and video. I am planning to create a DC Variable voltage and current Power Supply from an old ATX power supply.

[@TheLabOtomy]

Nice!

[@linmal2242]

Great little trick! Puppetry of the Power Supply, HILARIOUS!

[@TheLabOtomy]

Happy you liked it!

[@EricGranata]

Solid jam.

[@TheLabOtomy]

🤘

[@18436Melissa]

Thank you for this, I am going to be using a laser project for this one, using the 3.3V rail.

[@TheLabOtomy]

Good to hear, good luck with your project

[@JohnL_S17]

thanks, just what i searched for!

[@TheLabOtomy]

Nice, good luck!

[@JohnL_S17]

@@TheLabOtomy that it doesn't blow up, or why? XD

[@TheLabOtomy]

@@JohnL_S17No, just a friendly go for it and have a nice day kinda thing... yes I know this can be overwhelming when somebody does not insult you on the internet 😊

[@MiKa-bz2xg]

Thank you very much !!!! Please, is there any way to get around 1.5v from a power supply unit ?

[@LuxHack]

Between an orange cable (3.3V) an a red cable(5V) you should get 1.7V

[@SidewaySensation]

Thank you for that. You have a new subscriber.

[@TheLabOtomy]

Welcome

[@LegendOfKarogane]

Thanks I needed this

[@TheLabOtomy]

Welcome

[@vernetjuniortitus7400]

Hi and thank you for the Tutorial, the formula does not apply with my power supply box, this means that it is crashed, what else can I do to repair it?

[@TheLabOtomy]

Start with visual inspection, check for anything that looks burnt or busted

[@ezyjack826]

can I combine two power supply and tie the wiring together? what will this give me as far as volts and amps? ty for your assistance. 🙂

[@TheLabOtomy]

Not recommended I believe since a delta in specs / outputs between PSU can lead to serious issues.

[@ezyjack826]

@@TheLabOtomy okay and ty for the reply

[@zakawaka3752]

And what about the pg wire where I to have connected it and will it run without pc wire connected to motherboard ????

[@TheLabOtomy]

The Power Good (PG) signal is sent from the PSU to the motherboard. It is important for the MoBo to start, not for the PSU to start.

[@DrDeepspace]

Sounds like the MCP is relegated to narrating yet vids

[@TheLabOtomy]

Yes

[@j3ffn4v4rr0]

Does COM stand for common ground?

[@TheLabOtomy]

Correct

[@HEISENVER6A]

Today we play with Messi xdxdxdxdxdxd hahahaha

[@TheLabOtomy]

And we have too... see: kzbin.info/www/bejne/p4Wrpp6BoKd-m5I&pp=gAQBiAQB

[@Gustamonte]

i try all day long to power my monitor. Of course, i dont join the green and black wire.

[@TheLabOtomy]

GG!

[@vaderwashere365]

What about a proprietary PSU, like Dell/Alienware and such that have a "Power OK" pin in the mobo connector?

[@TheLabOtomy]

They may use different wire colors than and may have own requirements for power sensing (brown cable could be a grey or pink one for instance), but the principles to get the PSU started are the same: connect Power _on to ground, connect a dummy load if needed, connect power sensing if needed

[@vaderwashere365]

@@TheLabOtomy okay, I will try just the 1 jumper 1st. Then power ok if needed. Thank you!

[@egoillusion5734]

Thank you thats GND line

[@TheLabOtomy]

Yep

[@gunathilakasujeewa7737]

Ups

[@uncontrollabledogs3791]

This could be a really great video but please do it WITHOUT the hillbilly music, your voice is fine.

[@TheLabOtomy]

Me like banjo, yihah!

[@redneckson]

​@@TheLabOtomybased

[@vioconstructionservices6218]

Logic

[@TheLabOtomy]

Agree