testing power supply connectors with multimeter

[appleninja4ever]

Great tutorial. Your the man!

[TheScottie101]

Thanks a lot dude. You really helped!!!

[barlog20]

Your power supply is suppose to plugged in the electrical outlet when your testing it right?And how do you test to see if a power supply is under performing when its hook up to your computer and your computer is on running programs?

[paulo1149]

I heard the PSU should always be under load, even when testing?

[bargeanimal]

Thanks for the video. Please excuse my ignorance but what are you checking the documented levels against?

[alameerLover]

a very nice video ***** 5 stars . short and crispy. well done

[MetalheadzVal]

Would've probably helped me more without the freakin Bruno Mars musical in the background =/

[fsmclean]

Nice tutorial. One question that I am having a hard time finding the answer to. In what range would a reading be acceptable as in plus or minus. ie say a certain pin should be 12v an actual reading comes in at 12.8 . Is that acceptable?

[jiifurusu]

@fsmclean The usual number quoted is a 5% tolerance, meaning that the 12V lines should be between 11.4 and 12.6 volts, so yours is a little high.

[donstratton]

This is EASILY the best video currently on Youtube for testing your PSU with a multimeter! Very clear instruction, adequate video quality, good methodology.

Just to save some folks some time, let me point out that all voltages should be 3.3v, 5v or 12v. It is very likely that you will read fractions of a volt higher than that (such as 3.31 or 12.14) which is exactly as it should be. Anything much lower than nominal is suspect (such as 2.8 or 11.2).

Thanks dude!

[AlexCooper92]

Very helpful video thanks!

[preacherzson]

Great vid, easy to follow. It was the first time using my meter, so your inadvertent tip about ranging out the meter was a life saver.

My values were great until I got to pins 20-23 (pin 20 is actually open). For pins 21-23 the meter wouldn't display a number value, only something that looked like .0L. What would that indicate?

hanks again for the great vid!

[charlieroy911]

nice job

[simeonhendrix]

I'm troubleshooting a customers Power Supply. If the PSU fan doesn't come on when plugged in, it has to be a bad PSU, right? Agree/Disagree. Thanks.

[boricuandragon]

My os is XP SP3. But, do you think BSOD is linked to a bad psu? Where did you get your multimeter?

[TheLocalComputerTech]

@boricuandragon No I wouldn't put the PSU at the top of the list. Make sure all your update packets are current and check to see if the registry has not been altered. Just in case you should download a registry cleaner to pick off any viruses lingering. Since its happening a lot with apps I would check your drivers next. and im assuming that this just currently started so it shouldn't be an issue of compatibility. I bought the multimeter at radio shack.

[boricuandragon]

Nice video! I have a question. I hear a buzzing sound coming out of my computer case and I'm getting BSOD like six to eight times every day especially when using applications on facebook or watching videos on youtube, the computer is on for 8 to 10 hours daily.

I wonder if that is the result of a bad PSU which is probably 8 years old and how a multimeter can help me determine whether is good or not, (I don't have one but plan to buy it for future computer fixes). Thanks in advance.

[TheLocalComputerTech]

@boricuandragon what os are you currently using?