I have assembled so many desktop computers and troubleshooted laptops, today, I have learned a new lesson from you. Your demo is outstanding. Everything is very clear. I felt as it is done in front of me. Awesome Sir, Thank you...
1. connect pin 15-16 to turn PSU 2. connect black needle to pin 24 and red needle to pin 13,14, 21,22,23 3. connect black needle to pin 14 and red needle to pin 1,2,4,6,9,10,11,12
@@HealMyTech1 thank you a lot for the tutorial One question: the blue colored wire (-12V) reading is 11.3V for me, every thing else is good even the cpu, gpu and molex connectors. Does that mean I need to replace the PSU?
When I do the following;- 1. connect pin 15-16 to turn PSU (all Ok) 2. connect black needle to pin 24 and red needle to pin 13,14, 21,22,23 (Ok- all is good) 3. connect black needle to pin 14 and red needle to pin 1,2,4,6,9,10,11,12 (WTF ??) The First set are spot on; but the 2nd set Are either 3x the listed Voltages (1 & 2 supposed to be 3v but are 15.57..v), and (4, 6 & 9 supposed to be 5v = but are 17.4v) & in the case of 10 & 11 they are near zero volts at 1v? or something;- ( '1 . ) . And next, the 12th pin (supposed to be 3.3v) is 15.6v or so Looking inside the PSU is relatively clean and looks perfect. PC was running fine... but PUBG kept crashing halfway through the game. Then when I re-booted after the BIOS it went dead with one white underscore on a black screen. So, assumed CPU or GPU, but then wondered 850W Platinum PSU made in China maybe at fault. Wondering if i7-4770 CPU could have caused it?; or even TUF Motherboard? Or Strix GTX1070?
Thank you so much for this video. It's been over 20 years since I worked as a Technician. You reminded how to be one again. Pointing out the the Power On jumper did it for me. Appreciate the safety tips as well.
This is a good intro for entry level troubleshooting for a PSU, but what I would call "Advanced Troubleshooting" would be testing the voltage lines under load, which is a little more difficult. As a PSU could appear to be working just fine until you get it under an extensive load like in a video game or rendering session whereby the PC would restart due to a drop in voltage (most likely on the 12V supply) from a lack of current, measured in amperes, and is otherwise not sufficient under such load.
@@SuperKiki93 Are you seeing my post? I can't see my comment wtf, do similiar to what he is doing but under load you can use the search watch?v=ZiYFwjdh_lE I just know how much my various hardware consumes so when I bench test a PSU I just choose the hw based on how much 12v amperage I am trying to load up on the PSU.
It should be noted that you can sometimes have failed power supplies that output at a voltage that's within tolerance with no load on the voltage rails. While it's more common that a rail will just outright fail, I have had instances where a PSU will output the correct voltage when measured, but when loaded it drops down to next to nothing. What I do the mitigate this is to put a modest load, say, a 20w incandescent lamp or a resistor on the rail I am testing and then measure voltage. This will yield a more reliable measurement when testing for a failed supply as it should also factor in how much voltage drop you get on the rail when it's under load. Additionally, a time-saving trick: every wire in the PSU is grouped by voltage on the output section of the supply's circuit board. This means, that unless you have a multiple +12v rail design (which can be seen in higher end power supplies), that a +12v on your EPS+12 connector and a +12v on your SATA power / MOLEX / FDD connector will be connected to the same point on the power supply, therefore should have continuity between the two wires. For this reason, I tend to simply test one wire from each voltage rail. Unless it's a multi 12v rail supply and I don't know where the wires are allocated, then I will test all of the wires with a load across my probes to confirm that all rails are working properly.
Thanks! Excellent video. I used this method to make sure a psu wasn't faulty, it wasn't. Turns out disconnecting absolutely everything from the motherboard and jumping the clear CMOS pins brought the PC back.
dude for like 89% of the video i thought the black hand sweater thing was like an automatic weird unique prop holder. it was moving erratic an creeped me out. but when you told it to hold this and it lurched forward i realized it was a humanoid.
@@corndogers564 Yes. The video shows how to test the cable. We had a faulty one that was providing lower voltage than the PSU required. Changed the cable and the PSU was fine
This was a very helpful video. Helped me and my son to trouble shoot effectively a non working PC that he has assembled. The problem was that the 24 pin connector had no white wire. We could find that out easily. Thank you for this great and useful video.
Thank you sir! Just tested my first power supply. They explored a little further after the confidence of this video and looked up and tested all the parts on it as well. Thanks for the great video!
Nice job with teaching.... One thought for doing this alone (We all don't have a lovely assistant with us)..... Use an alligator clip on negative (black wire) side of multimeter and clip it to metal on PSU case grounding it - confirm a perfect ground by checking resistance/ Ohms test between clipped lead and any of the ground wire - (actually if you are having issues you can check all of the ground wires with this test).. Thank you, much appreciated.
Good video,my problem is faulty pc start/up then pc runs ok.i have been suspecting power supply to be the problem so with the help you have shown i will now test my power supply unit following your advice and chart.thank you.
Excellent video I learnd how to turn on PS without motherboard. Also very good picture of power plug pinouts and you even added the tolerance ranges for each pin Excellent. May I borrow your assistant hands i need some one to hold things when I am working. also nice touch zooming in on the power cord symbols. I also like that you were talking us through the tests so I new exactly where i was. Subbed and Like cheers
Great video and thank you so much for it. Lucky me found it too. Ill just echo what everyone else said. Even in a quality tech school you dont get it this easy and precise almosat like one on one instruction. . The pinout charts were beautiful. Now the PSupply im only 20% worried about i can test instead of testing it first blind with the new pricey board and processor i just installed. Thanks guys. Edit to add: Just finsished the test exactly as shown and voila i KNOW i have a 100% power supply on all circuits...nice!!!
I just tested a Corsair AX1500i PSU that I found in the TRASH! 🤦🏻♂️ Knowing that to just power the unit up isn’t a good enough test, I got a pinout, watched your video...and found every output voltage to be SPOT ON! This PSU sells for between $480 to over $700! The things people just throw away. 🤦🏻♂️
Found a nice tower with fans and PSU still in it by the dump not long ago. Not worth $300 but money is money. People get stressed and throw away good stuff while moving.
I might be mistaken but that is probably his wife. Hence the covering. Nonetheless if it is in fact his wife tis quite adorable how she is supporting him both literally and figuratively
Thanks for the video. Everything was to spec for my Thermaltake TR2 600W... EXCEPT the blue wire read 11.17V I dont know if this is anything to worry about or not, but I can confirm my PC black screens and self-reboots when playing most games and also I have had trouble just getting it turned on. The fans and LEDs would come on for a second but then shut right off. It all seems like a power issue, but also a temperature issue too as the CPU and GPU run a little warmer than what idle specs say. CPU does shoot up to 85 Celsius time to time (even with new thermal paste), but the graphics card usually reads 49-55C° even while gaming. Been messing with this PC on and off for months lol
Mine came color coded all black. So without your chart there is no way to tell. Thank you for providing this detailed information. Reason for me to do this is my computer will turn off by itself at random. Other times whea uncorrectable error bsod. (That you’ll set cpu vcore to 1.270v ) Now motherboard won’t boot. If you’re facing this it’s the psu not your ram, mb or cpu. Hopefully save you some time if you’re facing this issue.
Thanks for this vid I was able to check my power supply it was ok but still no turning on computer so I started to mess around with it by plugging every thing in then using multimeter on that diode option and plug the multimeter into the green black wires then not just the power supply fan worked but the cpu fan as well then pressed the power button and the computer turned on. So thanks for showing me what I needed to do with the fan cos it helped with actually turning it on
Be aware folks, there is no wire for pin 20 the -5v on many newer psu's. I ordered a new psu due to a testers 5v led not lighting up, now I see this and find there is no -5 line, which is why it failed to light up on the tester. This is a great check for dead pc's, but this won't help with intermittent problems like a psu rebooting intermittently.
first 4 minutes tutorial. 4:45 nice chart. 6:30 the Testing Starts, no blah blah blah after that. easy to follow. I tested power supply while still in computer just unplugged from motherboard. the gloved one??? nah not that Gloved One LOL. safety? nope, you still would get bitten if there was a short But loved it. I Like, Ole!
I believe the only two ways to destroy it, are to short the wrong pins and not the power on with the ground or accidentally choose a current measurement from your multimeter which is going to short the pins that you touched with the probes. For those who don't know, when you measure voltage, multimeters are designed in such a way that the resistance between the two points that you measure is very big (theoretically infinite). This means that no current is able to pass from one probe to the other (or just a tiny amount can pass) thus there is no way you can short and destroy something.
Thanks for this, although I don't know how to feel now, because apparently my PSU is fine, so it could be my graphics card or motherboard, which is a lot worse of a problem and potentially a lot more expensive. Oh well!
hi, thanks for the video. i learned a lot. question please... how do i check if the PURPLE 5v on my power supply has continuous power? thanks in advance.
awesome vid and to make sure i dont blw anything up when I make some custom sleeved cables for my psu (NO extensions) in the future. the intro is a bit earrapey though.
Straight and clear explanation, thanks for the basic information. Sometimes I use my GF as a table top or a hanger too... (jk) Why don't you wear gloves btw, if the other person does? Next time choose anti-static gloves ;-)
Very professional job on explaining this in detail along with safety procedures. I would assume this can be used to find out the values on a modular power supply's end (with no cables attached)?
I have assembled so many desktop computers and troubleshooted laptops, today, I have learned a new lesson from you. Your demo is outstanding. Everything is very clear. I felt as it is done in front of me. Awesome Sir, Thank you...
I second this comment. Very nice. Exemplary vídeo.
Yep I would just process of eliminate and get to PSU but this helps.
1. connect pin 15-16 to turn PSU
2. connect black needle to pin 24 and red needle to pin 13,14, 21,22,23
3. connect black needle to pin 14 and red needle to pin 1,2,4,6,9,10,11,12
Cool summary!
@@HealMyTech1 thank you a lot for the tutorial
One question: the blue colored wire (-12V) reading is 11.3V for me, every thing else is good even the cpu, gpu and molex connectors. Does that mean I need to replace the PSU?
Just a correction to call out on point# 3. It should be Pin 15 for ground instead of Pin 14 which is blue
When I do the following;-
1. connect pin 15-16 to turn PSU
(all Ok)
2. connect black needle to pin 24 and red needle to pin 13,14, 21,22,23
(Ok- all is good)
3. connect black needle to pin 14 and red needle to pin 1,2,4,6,9,10,11,12 (WTF ??)
The First set are spot on; but the 2nd set Are either 3x the listed Voltages (1 & 2 supposed to be 3v but are 15.57..v), and (4, 6 & 9 supposed to be 5v = but are 17.4v) & in the case of 10 & 11 they are near zero volts at 1v? or something;- ( '1 . ) .
And next, the 12th pin (supposed to be 3.3v) is 15.6v or so
Looking inside the PSU is relatively clean and looks perfect.
PC was running fine... but PUBG kept crashing halfway through the game. Then when I re-booted after the BIOS it went dead with one white underscore on a black screen. So, assumed CPU or GPU, but then wondered 850W Platinum PSU made in China maybe at fault. Wondering if i7-4770 CPU could have caused it?; or even TUF Motherboard? Or Strix GTX1070?
Hai indonesian
Great video dude! As the start I didn't even notice the other person in the video. When the hands moved I was like hey! Hold on a minute 😅
Thank you so much for this video. It's been over 20 years since I worked as a Technician. You reminded how to be one again. Pointing out the the Power On jumper did it for me. Appreciate the safety tips as well.
This is a good intro for entry level troubleshooting for a PSU, but what I would call "Advanced Troubleshooting" would be testing the voltage lines under load, which is a little more difficult. As a PSU could appear to be working just fine until you get it under an extensive load like in a video game or rendering session whereby the PC would restart due to a drop in voltage (most likely on the 12V supply) from a lack of current, measured in amperes, and is otherwise not sufficient under such load.
How does one do this this?
@@SuperKiki93 Are you seeing my post? I can't see my comment wtf, do similiar to what he is doing but under load you can use the search watch?v=ZiYFwjdh_lE
I just know how much my various hardware consumes so when I bench test a PSU I just choose the hw based on how much 12v amperage I am trying to load up on the PSU.
It should be noted that you can sometimes have failed power supplies that output at a voltage that's within tolerance with no load on the voltage rails. While it's more common that a rail will just outright fail, I have had instances where a PSU will output the correct voltage when measured, but when loaded it drops down to next to nothing.
What I do the mitigate this is to put a modest load, say, a 20w incandescent lamp or a resistor on the rail I am testing and then measure voltage. This will yield a more reliable measurement when testing for a failed supply as it should also factor in how much voltage drop you get on the rail when it's under load.
Additionally, a time-saving trick: every wire in the PSU is grouped by voltage on the output section of the supply's circuit board. This means, that unless you have a multiple +12v rail design (which can be seen in higher end power supplies), that a +12v on your EPS+12 connector and a +12v on your SATA power / MOLEX / FDD connector will be connected to the same point on the power supply, therefore should have continuity between the two wires. For this reason, I tend to simply test one wire from each voltage rail. Unless it's a multi 12v rail supply and I don't know where the wires are allocated, then I will test all of the wires with a load across my probes to confirm that all rails are working properly.
Thanks! Excellent video. I used this method to make sure a psu wasn't faulty, it wasn't. Turns out disconnecting absolutely everything from the motherboard and jumping the clear CMOS pins brought the PC back.
dude for like 89% of the video i thought the black hand sweater thing was like an automatic weird unique prop holder. it was moving erratic an creeped me out. but when you told it to hold this and it lurched forward i realized it was a humanoid.
I love the thought he put into making this a good video. The humanoid kept things moving and the black gloves keep focus on what is important
Hey King, you dropped your crown! Thanks for the detailed instructions on how to check PSU!
Our PSU was great, the problem was with the Power cable. Thank you for a very informative diagnostic video.
You're welcome!
The power cable can cause issues for the psu??
@@corndogers564 Yes. The video shows how to test the cable. We had a faulty one that was providing lower voltage than the PSU required. Changed the cable and the PSU was fine
This was a very helpful video. Helped me and my son to trouble shoot effectively a non working PC that he has assembled. The problem was that the 24 pin connector had no white wire. We could find that out easily. Thank you for this great and useful video.
I think it's supposed to be that way. Mines the same way. There used to be a -5v white but apparently they ditched it in '03
This Guy saves me to My Test 2 Practical and now I'm Comfortable ☘️💯
This was perfect, exactly what I needed to narrow down my problems. My power supply is definitely working!
Very easy to understand. When I test a PSU, I also test all other cables.
You are the top man and the first go-to when I need advice - cheers 👍
thanks for sharing your knowledge and giving me the confidence to debug a faulty PSU to graphics card connection
Thank you! I know the power supply works now, even got the drives working. Now need to troubleshoot the motherboard and the power switch.
Thank you sir! Just tested my first power supply. They explored a little further after the confidence of this video and looked up and tested all the parts on it as well.
Thanks for the great video!
Nice job with teaching.... One thought for doing this alone (We all don't have a lovely assistant with us)..... Use an alligator clip on negative (black wire) side of multimeter and clip it to metal on PSU case grounding it - confirm a perfect ground by checking resistance/ Ohms test between clipped lead and any of the ground wire - (actually if you are having issues you can check all of the ground wires with this test).. Thank you, much appreciated.
Good video,my problem is faulty pc start/up then pc runs ok.i have been suspecting power supply to be the problem so with the help you have shown i will now test my power supply unit following your advice and chart.thank you.
Any updates?
Thanks for the video, this helped out a lot when I was troubleshooting a new PC build.
Excellent video I learnd how to turn on PS without motherboard. Also very good picture of power plug pinouts and you even added the tolerance ranges for each pin Excellent. May I borrow your assistant hands i need some one to hold things when I am working. also nice touch zooming in on the power cord symbols. I also like that you were talking us through the tests so I new exactly where i was. Subbed and Like cheers
Great video and thank you so much for it. Lucky me found it too. Ill just echo what everyone else said. Even in a quality tech school you dont get it this easy and precise almosat like one on one instruction. . The pinout charts were beautiful. Now the PSupply im only 20% worried about i can test instead of testing it first blind with the new pricey board and processor i just installed. Thanks guys. Edit to add: Just finsished the test exactly as shown and voila i KNOW i have a 100% power supply on all circuits...nice!!!
Good tutorial, helped me through the process without doing injury to myself or my computer and happy to report my PSU is 100%. Thanks!
This was easy and fun. Great content! You should add a pinout sheet in description. I used one to test my CPU and PCIe cables.
My multimeter exploded durring the cable check. 😂😂 suggestion: tell them to not use a cheap ass multimeter 🤣
🤣🤣🤣
Oh cool, I think my motherboard is dead. Thank you for the video, this has saved me from diagnostic fees.
I love working on my own things.
I just tested a Corsair AX1500i PSU that I found in the TRASH! 🤦🏻♂️ Knowing that to just power the unit up isn’t a good enough test, I got a pinout, watched your video...and found every output voltage to be SPOT ON! This PSU sells for between $480 to over $700! The things people just throw away. 🤦🏻♂️
Found a nice tower with fans and PSU still in it by the dump not long ago. Not worth $300 but money is money. People get stressed and throw away good stuff while moving.
it is very good tutorial for beginner electronics expert.
for people from canada watching this our standar voltage is 110-127 V
ttyyyy
Who is the robber???😂😂😂
🤣
Girl
I might be mistaken but that is probably his wife. Hence the covering. Nonetheless if it is in fact his wife tis quite adorable how she is supporting him both literally and figuratively
I AM DEAD 😂😂😂😂
It's not a robber as you think so, it is a robber of his heart. That is waifu!
Great video, very informative. Been a builder for a while now and just started making my own cables. Came in handy when testing my work! Thanks!
use another working pc for 5 minutes to make sure it is working.
Best turorial I've seen, easy and detailed. Thank you!
assistant gimp lectrican - never knew that was a thing - better than a grip stand
Very well done! I tested the same PSU; so this video was perfect. Thank you.
Glad it helped!
Luckily didnt blow a fuse but youve helped me with fixing a dead PC, thanks!
Good videos, straight to the point and very informative. Thanks !
You have been very helpful, knowledgeable, honest and practical. Stay blessed
Very clear and useful tutorial thanks
Absolutely brilliant help ,sir,thanku kindly😊😊
I need a pair of those helping hands.
I always run out of hands.
Thanks!
Thanks for the video. Everything was to spec for my Thermaltake TR2 600W... EXCEPT the blue wire read 11.17V
I dont know if this is anything to worry about or not, but I can confirm my PC black screens and self-reboots when playing most games and also I have had trouble just getting it turned on. The fans and LEDs would come on for a second but then shut right off. It all seems like a power issue, but also a temperature issue too as the CPU and GPU run a little warmer than what idle specs say. CPU does shoot up to 85 Celsius time to time (even with new thermal paste), but the graphics card usually reads 49-55C° even while gaming. Been messing with this PC on and off for months lol
Hey did u solve your problem
Plss reply
The hands with black gloves made this video a bit creepy.
Because that is a woman, and he looks like Muslim, he decided to hide her, i feel him
I'm going to guess that's his wife : )
Its always nice to have a spare set of hands!
Yah really was wondering wtf was going on, thought maybe it was a mannequin, but then the hands moved?
I guess you’ve never been a stage/back stage hand before. They dress in all black. It seemed perfectly normal when I watched it.
A part of her skin was exposed!!!! What an insult!!! That would rage Allah I guess :P
Mine came color coded all black. So without your chart there is no way to tell. Thank you for providing this detailed information.
Reason for me to do this is my computer will turn off by itself at random. Other times whea uncorrectable error bsod. (That you’ll set cpu vcore to 1.270v ) Now motherboard won’t boot. If you’re facing this it’s the psu not your ram, mb or cpu. Hopefully save you some time if you’re facing this issue.
Thank you, brother! Everything worked exactly as you said it would. Very Helpful.
Thanks for good information.
Thank you for your service sir 🖖
Thanks brother! This was a simple lesson and it helped a lot
Thanks for this vid I was able to check my power supply it was ok but still no turning on computer so I started to mess around with it by plugging every thing in then using multimeter on that diode option and plug the multimeter into the green black wires then not just the power supply fan worked but the cpu fan as well then pressed the power button and the computer turned on. So thanks for showing me what I needed to do with the fan cos it helped with actually turning it on
As long as it works, I'm glad for you!
Thats so weird, to me(a noob)..why does this work?
Very well explained. Thank you. Learned something today 👌🏽
I love the Mastec multi meter
Thanks for the video! Keep up the great work!
This was very useful
you need to test while you have the PSU on load. :/
Thanks a lot for this great tutorial : very good step-by-step explanations.
Thank you for this concise instructional video! The diagrams and step by step process helped a ton!
Exactly the kind of video I was looking for. Gracias!
Great video! Helped me fix my computer!
You're welcome!
what was your problem? I just built my first PC and it doesn't boot up. I just tested the PSU and it works fine so I think it may be the motherboard.
the black gloved robber is an experienced jump start car theft
Excellent video
Nicely and deeply explained
Keep up the good work 👍
thats what i want to this video,best tutorial, thats why i am subscribe to your channel thanks for sharing
This video was very helpful, thank you!
I like the consistent uploads, great work
Thanks 👍 helped me trouble shoot
You're a champion, thanks so much for the video, was super helpful
Thanks a lot. Very in depth.
very informative, thank you :)
Be aware folks, there is no wire for pin 20 the -5v on many newer psu's. I ordered a new psu due to a testers 5v led not lighting up, now I see this and find there is no -5 line, which is why it failed to light up on the tester. This is a great check for dead pc's, but this won't help with intermittent problems like a psu rebooting intermittently.
Very informative. Thanks.
Very helpful- Thank you!
Masha allah bohot acha video very good method to teach us about pwr supply thnx and shukran bhai
Helpful video, thank you!
You're a legend thanks bro
Happy to help
first 4 minutes tutorial. 4:45 nice chart. 6:30 the Testing Starts, no blah blah blah after that. easy to follow. I tested power supply while still in computer just unplugged from motherboard. the gloved one??? nah not that Gloved One LOL. safety? nope, you still would get bitten if there was a short But loved it. I Like, Ole!
Thank you so much while i know these things but your video is excellent and so detailed
Thank you for appreciating!
Thank you so much you are amaxing godbless you sir
what reason do you join green with ground...?
I believe the only two ways to destroy it, are to short the wrong pins and not the power on with the ground or accidentally choose a current measurement from your multimeter which is going to short the pins that you touched with the probes. For those who don't know, when you measure voltage, multimeters are designed in such a way that the resistance between the two points that you measure is very big (theoretically infinite). This means that no current is able to pass from one probe to the other (or just a tiny amount can pass) thus there is no way you can short and destroy something.
Thanks for this, although I don't know how to feel now, because apparently my PSU is fine, so it could be my graphics card or motherboard, which is a lot worse of a problem and potentially a lot more expensive. Oh well!
Thanks a lot sir!!
Great help/ instructions!
hi, thanks for the video. i learned a lot. question please... how do i check if the PURPLE 5v on my power supply has continuous power? thanks in advance.
awesome vid and to make sure i dont blw anything up when I make some custom sleeved cables for my psu (NO extensions) in the future. the intro is a bit earrapey though.
Great video! Thanks for making this.
Glad to see that I am not the last man on Earth that can use a meter. Good vid! Thank you
Thanks for sharing G
One of my readings was -12.82 volts on a 12 V pin which is outside the 4%. Is that a problem ? Excellent, clear video. Thank you very much.
Thank you brother, awesome video. I am getting all the right voltages but pin 12. No 3.3v! What pin 12 used for?
Thank you for this video!
Straight and clear explanation, thanks for the basic information. Sometimes I use my GF as a table top or a hanger too... (jk) Why don't you wear gloves btw, if the other person does? Next time choose anti-static gloves ;-)
Good work 👏
thank you very much! perfect guide!
Very good 👍🏻
Your video is very helpful.
Thanx a ton🎉
Very professional job on explaining this in detail along with safety procedures.
I would assume this can be used to find out the values on a modular power supply's end (with no cables attached)?
Yip same procedure.
Great info
Thank you!
Fantastic Video! Thank you