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Power Supply Tester 2.0 20/24

by Ultra

List Price: $19.99
Price: $19.95 + $5.15 shipping
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Frequently Bought Together

Power Supply Tester 2.0 20/24 + Pc Motherboard USB & PCI Analyser Diagnostic Card Tester
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Technical Details

  • Brand Name: Ultra
  • Model Number: ULT31553

Product Description

Power Supply Tester 2.0 20/24

Product Details

  • Product Dimensions: 8.8 x 6.1 x 0.9 inches ; 4 ounces
  • Shipping Weight: 4 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B000EF1JGA
  • Item model number: ULT31553
  • Average Customer Review: 4.1 out of 5 stars  See all reviews (33 customer reviews)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: July 7, 2004

Customer Questions & Answers

Customer Reviews

4.1 out of 5 stars
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Most Helpful Customer Reviews

22 of 25 people found the following review helpful By bdn on June 19, 2009
Verified Purchase
My PS failed to power up the PC. It turned out that the 12+V line is 10.99V which is below the min spec of 11.4V. A new PS did the trick. However, when I tested the damaged PS with this device, all LEDs show green. This device will be good if the PS is dead; it can tell you that. Otherwise, it will give you a wrong assumption (some previous users made comments on this but I failed to pay attention to. This review is to re-emphasize this fact). A good old multimeter is the way to go.
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10 of 10 people found the following review helpful By Burton Lape on August 10, 2006
Verified Purchase
This is great for the price.

I was quickly able to diagnose whether my powersupply had died on me or if it was yet another system board issue.

I first tried it on a known good power supply just so I could see the results of what happens with a good power supply.

Then hooked it up to the one I felt was dead and yup only got one light to sorta flash a little bit and was able to replace just the part that had gone out and get my system back up and running.

I would Highly recommend this tool to any to help diagnose dead power supplies, at the price its at.

Now if your system turns on and has power supply issues then I would just use a multimeter however when you feel your system board has fried and you need a load to turn the power supply on, this is a great tool for doing just that.
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12 of 14 people found the following review helpful By Stan Horstman on January 23, 2010
Verified Purchase
This will NOT tell you if your power supply is good or bad. I test power supplies often and this will test a power supply showing good BUT when you put that power supply to a motherboard and try to power it on NOTHING. Hook another power supply to the machine and the computer works. You could have just made the wrong diagnosis if relying upon this item.

This is a pretty toy but not a tool. You may wrongly diagnose a motherboard as being bad because of this. Maybe it has something to do with a motherboard putting more of a load on a power supply than the LED's in this tester.

Mark my words- don't rely on this for real testing. You will keep bad power supplies (unless all you were going to power were LED's) and throw away good motherboards. Can we put a load on this? I really do need a good tester. Anybody??
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5 of 5 people found the following review helpful By JJ on September 24, 2007
Verified Purchase
it will not detect the minor power fluctuations that might cause your motherboard to not send the power_good signal.

That is as far as this product goes. It is fairly well constructed, has LEDs and sounds to tell if it delivers power at all but ultimatly it will only test if the powersupply is completely dead, not just dead enough not to be useful.

Bottom line: It can be useful in a quick diagnosis for the price but simply because it delivers all green doesn't mean the power supply won't have problems completely hooked up to your system.

Id probibly reccomend using a digital multimeter and a paperclip to test if you have the expertice, if not this may be a low cost option to see if you have to shell out another $80 for a new PS.
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2 of 2 people found the following review helpful By Retrospek on October 30, 2010
I bought this to test a PSU that I suspected as having problems. Sadly, it told me that the PSU was working fine. I swapped Power Supplies, and the motherboard fires up, with the suspected bad PSU, I get lights (on the motherboard) and the fans spin, but it won't POST or even fire for that matter.

I bust out the multimeter, and lo and behold, the 12V 4 pin rail is only pushing about 8.8 - 9.0 Volts. I check the known good PSU, and it reads 12V exactly. I check the suspected PSU on the molex 4 pins, and same thing, 8.8 - 9.0 Volts, the 5V portion comes up perfectly. The "tester" reads the 4 pin molex plug as working as well.

My best conclusion is that the "tester" from Ultra merely tests for continuity, but does not actually check voltage/amps. Sadly, this product looks pretty, and may very well detect some bad PSU's, but should not be relied on, as there is a LOT more than just an incomplete circuit that can go wrong with a PSU.

I've seen a few other PSU testers that claim they test for high/low voltage as well, and I'm going to check them out and see how they perform compared to this product.
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1 of 1 people found the following review helpful By CJ Cotter on February 1, 2013
Truly, this is ONLY a quickie voltage checker, and not a complete diagnostic piece of equipment. If there is something else wrong with your power supply, it cannot test or indicate that. I'm happy with this product (bought 2 of them), but yes, I wish that it could do more. For what it is designed to do, it does very well, but don't expect it to be an exhaustive tester of all functions. As others have pointed out, it is very possible to have a power supply that passes all voltage tests, but will not power up your computer. The other reviewers are complaining because they paid for a VW and expect it to be a Maserati.
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1 of 1 people found the following review helpful By B. Parry TOP 1000 REVIEWER on November 28, 2007
Easy as it gets. Plug the 20/24 pin molex in and read the lights. Check the other molex connectors such as the 4 pin and see if there is trouble there! EASY.

It is straight forward but does not tell what the readings SHOULD be.

Easy to carry around, slips into any tool bag or pocket.

I have had this item for over a year now and use it regularly.
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As other reviewers have mentioned, this unit seems to lack the sophistication to provide meaningful qualitative analysis of critical power supply parameters, such as out-of-tolerance voltages and current available under load. It's roughly analogous to sticking your fork in the toaster to see if it's plugged in: if you see sparks and your hand tingles, you've got some juice there, but that's about all that you can conclusively say about it.

In other words, if you suspect that the power supply is bad, and this device suggests that the power supply is bad, you can be reasonably certain that the power supply is bad. The converse is not necessarily true. It can and will sometimes wrongly identify a supply that will not power up a motherboard, as being 'good'. At this very moment, mine is connected to a supply that will not turn on when connected to the mobo, yet all the green lights happily wink at me as if to say 'Sucker!' In this particular case, I first tested the supply with a DVM, because I couldn't find the tester or my known-good spare PSU, and it looked good! But it shut down when connected to the mobo, so I told the computer's owner that her mobo was almost certainly a deader. Still, something nagged at me to try another power supply, which I pulled out of a 'retired' machine, and the dead computer booted right up! So I've replaced the dead PSU a that was declared 'OK' by both a DVM and this tester, and returned the functioning computer to it owner.

The Ultra tester is not completely without merit, however, and I think it's worth the modest cost. Just bear in mind that it's far more accurate and reliable reporting supplies that have failed rather than properly-functioning ones. If you need quick verification that a PSU is truly dead, this will probably do it, but positive results should be more carefully considered.
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