How To Test A Power Supply Unit (PSU) With A Digital Multimeter | Advanced Troubleshooting

[@srinivasaraoyp3640]

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...

[@danielbarbosa3]

I second this comment. Very nice. Exemplary vídeo.

[@PrincernPrince]

Yep I would just process of eliminate and get to PSU but this helps.

[@hitodium]

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]

Cool summary!

[@NYMT19]

@@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?

[@wasimdanawala]

Just a correction to call out on point# 3. It should be Pin 15 for ground instead of Pin 14 which is blue

[@RogerThat1945]

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?

[@aloneholic]

Hai indonesian

[@DigBipper188]

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.

[@evildiesel1709]

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.

[@Frank-in-NY]

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.

[@danielburnell201]

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 😅

[@JonathanBlackmore]

Our PSU was great, the problem was with the Power cable. Thank you for a very informative diagnostic video.

[@HealMyTech1]

You're welcome!

[@corndogers564]

The power cable can cause issues for the psu??

[@JonathanBlackmore]

@@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

[@AJ-MT]

Hey King, you dropped your crown! Thanks for the detailed instructions on how to check PSU!

[@PapaSmurf337]

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]

How does one do this this?

[@PapaSmurf337]

@@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.

[@jamoannmaulover9561]

@@SuperKiki93 It is not possible to test each supply underload with his method. You will need to connect input/output wires to each hardware that power is supplied to and also understand their power requirement for each hardware. To answer your question, you will need to buy 20/24 Pin LCD Computer PC Power Supply Tester for ATX BTX ITX TFX SAT (it's about $11 online). It's a plug and play for 20Pin, 24Pin ATX interface / SATA interface / 4Pin, 8Pin interface / PCI-E graphics card 6Pin interface / floppy drive interface / ATE hard disk interface

[@inspirationalclips1422]

This Guy saves me to My Test 2 Practical and now I'm Comfortable ☘️💯

[@nirupammukherjee215]

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.

[@OorahhColeman]

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

[@solidwire]

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.

[@mekamek891]

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.

[@larryruby]

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

[@surfernorm6360]

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

[@outlet6989]

Very easy to understand. When I test a PSU, I also test all other cables.

[@Michael-qr7hn]

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.

[@agustine2156]

Any updates?

[@mikejmcfarlane]

thanks for sharing your knowledge and giving me the confidence to debug a faulty PSU to graphics card connection

[@cyalknight]

Thank you! I know the power supply works now, even got the drives working. Now need to troubleshoot the motherboard and the power switch.

[@schautamatic]

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. 🤦🏻‍♂️

[@rockyg1775]

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.

[@SuperPercy66]

You are the top man and the first go-to when I need advice - cheers 👍

[@trs4184]

So, uh, what if my 24 pin connector is all black wires?

[@m21sup]

Check a pinout image in google, identify the first pin by the shape, and then find the other pins. All of them are pretty much the same, if not sure, check your psu manuals.

[@jairanthony6254]

Use the diagram to the right hand side and line up the clip with the clip shown on the diagram When lined up, count 4 pins down and that should be your green wire and right beside it to the right, is your ground

[@Dragons929]

Well shit 😂😂😂 same on me hahahaha

[@SubwayJack919]

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!

[@HighlanderJosh]

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

[@shreyasrd2034]

Hey did u solve your problem

[@shreyasrd2034]

Plss reply

[@billyboy911]

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!!!

[@emailyarabrandao]

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.

[@thekinghmimidou7001]

for people from canada watching this our standar voltage is 110-127 V

[@SenkoTTV]

ttyyyy

[@mrbrown6421]

I need a pair of those helping hands. I always run out of hands. Thanks!

[@navb0tactual]

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.

[@TheAzuritePerson]

Luckily didnt blow a fuse but youve helped me with fixing a dead PC, thanks!

[@sarawakiansborneo418]

Good explanation bro.I've a problem regarding my com psu..suddenly shut down.So,i dismantled the psu and tested the fan..it was working.Finally i tested the psu by looping the wire at the green/black but the fan no running.What's the problems there?tq

[@AntonioSalazar-db1eb]

great video: but...wouldn't it be best to do those tests "under load", ie: while the computer is working? by probing a HDD connector plug for 5v and 12v, other voltages? find then on the motherboard or in extra PSU plugs..

[@shushuyu]

sorry if i missed it techy stuff is not realy my jam but i am trying to learn. maybe i didn't catch it but did you mention what we should do if the psu works but it restarts abruteply and consistently in weird times? for instance..when you did the testing if even ONE pin come out with a number too high or too low even though would this be a psu replacement?

[@ChokeTube-vu7xz]

it is very good tutorial for beginner electronics expert.

[@fvrrljr]

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!

[@GeeTeeGarage]

Hey man. I got almost everything right but for the blue im getting -11.13v. My PC right now won't turn on at all, no light etc. can this be the cause?

[@jamesd.c.4810]

My reading for the blue is 11.45 and my pc is shutting down randomly. So far, it destroyed my 2tb hdd. I’m looking to either replace the psu or the mobo but I just don’t have enough knowledge to know what to replace.

[@ronarscorruption]

This was perfect, exactly what I needed to narrow down my problems. My power supply is definitely working!

[@MechanicForGMCCars]

Hello sir what do I need to do if I requare 13-18v by 350mili amps ? Is it posibel to use same or dimilar polarity leads to get centrain out put voltage? I atempt to use an satelite dish motor manuali activate that thing because I don't have an reciver .

[@DerpMaster1]

Question - when checking the power supply cable souldit be plugged in to a wall socket

[@dashx2]

if blue wire reads -11v instead of somewhere 11.52 to 12.48, is it fine?

[@ajuk1]

Took me over 2 minutes before I realised there was a second person.

[@rcrippen]

kurogo of Bunraku, made me laugh

[@themanhimself436]

My computer turns on but nothing appears on screen. I understand this is likely a video issue of some kind. My question is if it is possible to be a power supply issue. Almost all of my values are between .05 and .20 volts outside of the acceptable 4% tolerance range. It is a 6 year old system I attempt to repair sometimes. Can voltages outside of the range to this extent cause an issue like mine? Thanks

[@techterry5299]

the black gloved robber is an experienced jump start car theft

[@joshp9842]

Thanks for the video, this helped out a lot when I was troubleshooting a new PC build.

[@michaelwoo8752]

Hello, how many amp does the 12 v put out. If I connect the 12v to a video board that uses a 12 3amp power supply, would it have too much power and burn up the video controller board?

[@speedbird8326]

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.

[@tedwutang]

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.

[@crazycraigy01]

what reason do you join green with ground...?

[@loelie01]

Good tutorial, helped me through the process without doing injury to myself or my computer and happy to report my PSU is 100%. Thanks!

[@bustillosbrandon100]

My multimeter exploded durring the cable check. 😂😂 suggestion: tell them to not use a cheap ass multimeter 🤣

[@sir.dave_]

🤣🤣🤣

[@sscorp5761]

Thank you brother, awesome video. I am getting all the right voltages but pin 12. No 3.3v! What pin 12 used for?

[@rengoku81xx]

Thanks brother! This was a simple lesson and it helped a lot

[@anne4381]

Best turorial I've seen, easy and detailed. Thank you!

[@nikoszervo]

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.

[@-.Mohamed-_-salah.-21]

Hey bro Could you tell me which is better EVGA supernova 750 GT Or aorus AP 750 GM. Or Nzxt c750 Or deepcool DQ 750 ?

[@lonniebeal6032]

Seasonic

[@tommyboy7624]

My 10 year old SeaSonic PSU voltages are well within tolerance. Does this mean it is still safe to use?

[@alchemy1]

Where you plug in the power cord which is female prong and the power supply unit's are male prong ( assume the unit is an SMPS power supply nonlinear), if you measure for continuity on that male prong end on the power supply should there be any continuity there and if so roughly what ohms or should there be no continuity? ( I assume it must show some sort of continuity or there is some sort of open in the circuit somewhere. Or if very low continuity I assume there is a serious short somewhere. Does that sound about right?)

[@dedomv11]

Thank you for your video, very helpful.

[@panki-7]

What is tolerance for purple wire in V on 24pin connector on PSU? I have reading of 4,6V? All others are fine.

[@captainducko6465]

Informative video, but my pc turns off randomly... Is it possible that this method would reveal if a PSU is on its way out and is randomly not giving enough power?

[@Strytax]

i have a very strange problem with a old psu, when it works, it works, but sometimes when i change parts it doesn't power some things, one time it didn't boot one of the ram slots, other time it didn't boot the second HD, that time when i unplugged it worked, what could this be? readings are normal. i'm starting to think it's something else.

[@wmcmurray]

Cool ! I was able to test that my power supply is outputting a proper 12v because of this video, thanks :) ...But please, treat your assistant as a human being next time, it felt a bit awkward !

[@filips989]

What if the voltages are above the tilerance? So instead of 3.3 I have 3.45? Just one example, all my readings are at thr top tolerance or slightly above it. Would that cause my pc to power up (fans spinning, lights shining) but system not booting up or sending signal to monitor?

[@train4905]

Absolutely brilliant help ,sir,thanku kindly😊😊

[@techboy7930]

Is that possible that current range may lower down if the powersupply seems to be faulty. If that so that how can we check it when my multimeter can check upto 20 Amps of current

[@gearjammer89]

When I test this I am only getting 3.3v from the green pin to ground shouldn’t it be 12v? Also I’m not getting any voltage on any other pin except pin 9 I’m getting 5v. Does this mean my psu is bad?

[@PigeonDesign]

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!

[@alvydasjokubauskas2587]

use another working pc for 5 minutes to make sure it is working.

[@maulcs]

I was having an issue with a Corsair power supply I just bought and returned - tested fine on a multimeter, but still was shutting down in actual use. Double checked everything, old EVGA power supply works fine. Bizarre

[@newsmansuper2925]

assistant gimp lectrican - never knew that was a thing - better than a grip stand

[@taliaedwards9939]

Great video! Helped me fix my computer!

[@HealMyTech1]

You're welcome!

[@ren49]

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.

[@corndogers564]

Yeah the blue wire on my 500watt psu gave me reading of -11.25v. This may explain why my PC has trouble turning on.

[@dk2428]

Been having these annoying random restarts for months now. 6 months old pc, built with all new parts. It's been driving me crazy. Never thought of something so simple as measuring the voltage coming in the PSU. Voltage drops down to 215V AC regularly...way below that 6%...

[@shuklavinays]

Heads-up. I just now used your video and checked my PSU. It’s working fine. That means either my Gigabyte MB or the Pentium CPU broke. My machine isn’t booting with no life at all. Will try repairing or maybe upgrade. Thank you for that 24 pin chart thing and for this video.

[@MrStealth654321]

what volts should i have for the pcu ? Cyber pc power on but no post?? I got a guy working on it he changed the mother board now he says i need some ram. So dont know if the guy is trying to hoodoo me are not. Any ideas of help ? Thanks man good videos .

[@HealMyTech1]

This video is only one possible way of troubleshooting and fixing a PC. Based on all you questions, I have created a dedicated series to help troubleshoot all 10 main components of a computer in a logical process, I promise you if you follow it you will sort out your issue, since its the exact same process I go through when troubleshooting any pc problems for hardware. Troubleshoot A Computer Series Playlist | Computer Not Turning On | PC Turns On But No Display On Monitor kzbin.info/www/bejne/jZzGqWCubsydock I have also created a facebook group especially to help troubleshoot computer/laptop issues. If you post your question there with some pictures or even better a short video footage you will get a better response. Consider joining but make sure you read and accept the conditions and answer the questions, otherwise you may not be approved to join. The idea is to help each other, I am unable to respond to every request by myself. facebook.com/groups/healmytech/

[@youcantleavethisempty8872]

So if my computer isn't starting up (not even going to POST, the power light is just blinking) and all the pins are reading properly, does that mean I can assume the problem is with the motherboard?

[@Chan-rc2hw]

Thanks for the video man, it was very helpful. Please make that intro a bit quiter though it hurt my ears..

[@osamah.mohamed3629]

Does this color code for power supply cable are compatible for any brand of PSU

[@HawkFest]

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 ;-)

[@EdwinFairchild]

if the voltages are correct but what if the power supply isnt providing the needed current, testing the voltages i think is only proving one part of the power supply is working

[@HWandW]

Very well done! I tested the same PSU; so this video was perfect. Thank you.

[@HealMyTech1]

Glad it helped!

[@mattaquino1484]

If your PSU is causing an intermittent loss of power to your system, will this test reveal a failing line for sure or is it a situation where it may or may not show up on this test?

[@dashcamvietnam]

Hi , Paper clip test with the black one my psu fan not spinning. But I try the green with red the fan working. What is that mean? Thanksss

[@vooveks]

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!

[@brianburke2670]

Very clear and useful tutorial thanks

[@TheStevenWhiting]

Needed this, just about to check my dads. Built the PC ages ago and always fine. I hardly ever have to do this so always have to look up how to do it again as always forget.

[@jaqenhghar661]

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)?

[@cbacronje7869]

Yip same procedure.

[@wajahatsultan4851]

I am having 4.3 volts over 5 volts (red wire) and my PC is restarting continuously, not turning on. Can you please tell me where can be the fault in psu? And i have cleaned it as well.

[@kratoz_858]

Maybe its old. Replace it with true rated bronze or higher psu.

[@joshuafreeman6720]

You need a new one

[@BlackCatSyndicate]

Ok, so my voltages are good, but maybe it's a problem of not being able to handle a load? My fan spins when terminals are jumpered as described, but doesn't continue to run like yours did. Trying to get a rig running but motherboard, fans and gpu's just flutter on/off. I have a Corsair RM1000x, though I'm sure it doesn't matter. First one I didn't get fan spin when jumpered(new out of box that was sitting 3yrs unused) so I bought another and get this flickering stuff. Ideas?

[@HealMyTech1]

Sounds like incorrect voltage coming from possibly PSU, CPU, or even motherboard. Do I understand correctly that a KNOWN WORKING PSU swap did not do any change?

[@BlackCatSyndicate]

@@HealMyTech1 the new psu has the MB decorative white LEDs on the board blinking while the cpu and cooling fans rapidly go on/off. Came home tonight and turned on PSU and hit power button for MB but nothing happens. Did that a few times last night too. CMOS battery was dead so I grabbed two I had around(may not be good either)but didn't help. Yes, voltmeter shows good, proper power on each terminal.

[@jordan3150]

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

[@HealMyTech1]

As long as it works, I'm glad for you!

[@Draigon18]

Thats so weird, to me(a noob)..why does this work?

[@lonniebeal6032]

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.

[@mustafaziyai7628]

Nicely and deeply explained Keep up the good work 👍

[@wasimdanawala]

You have been very helpful, knowledgeable, honest and practical. Stay blessed

[@elsogoncalves5345]

Good Day how to adapt an atx source for pc dll mini. larger atx connector and the smaller dell all of 24pins

[@joshuahildebrand5358]

Hey! Informative video. This is my first pc build. My system turns off after 10 seconds and turns on again in cycles. I tested my Corsair Rmx 850 like this with the ram, GPU and storage in it to get some load on the PSU. The voltage matches perfectly with the diagram but the PSU still turns off after 10 seconds of spinning, yet the lights on the components stays on and I think the HDD stays on. Is it my power supply?

[@candycommander]

I'd check the CPU for overheating and use something like memtest on the RAM if the PSU appears to be good. With that said this PSU test is not the end all and you can still have a dysfunctional PSU while getting good readings from a multimeter.

[@kareemsabih]

I have 12.8 volts on my psu output is it normal ? Because I have power up trouble and my motherboard shows OVP led

[@RobsRepairs]

😅 great hand model

[@welshysgaming7966]

hi my blue cord comes up as -11.1 so does this mean the power supply is no good and need a new one? or can i fix this? thanks

[@Metalhead-4life]

I need to test my 6 pin & 8 pin GPU cables/output from my 1300 watt power supply. Where did you get that pinout chart? I dont see a link to it above?

[@AKAGI1708]

Ok all pins slightly above the spec except Pin 14 - the blue one. - Which is showing -11.46v which is out of range. The Computer is old but working prior to going shopping - came back won't even post despite replacement of iffy capacitors and a graphics card swap. What does this Pin 14 supply and could it have just slipped below the threshold to stop something working. FYI the original graphics card was showing an LED Warning light hence the GPU replacement but this hasn't worked. One side of me says the low PIN 14 output is the issue but then you see that PCI Express slots dont have a a-12V feed. Will buy a new PSU but don't want more expense if this is not the issue.

[@bkingtz1]

As salamu alaykum wa rahmatullahi wa barakatuhu Jazak Allah khair brother. TabarakAllah. Just next time give your wife thinner gloves so she can survive recording session. 😃 😘

[@Tanox22]

Is It a bada sign if the fan Is not starting once Power on? I mean if the fan Is not even starting could bei worth to continue with the Test?

[@HealMyTech1]

Usually yes its a bad sign. In rare occasion it could just be the fan that is faulty in the PSU.