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Coolmax 14909 PS-224 LCD 24-Pin ATX Power Supply Tester | 
 enlarge | Brand: ANTOnline
Category: CE
Buy New: $19.99
New (16) Used (1) from $19.99
Rating:  11 reviews
Color: Black
Media: Electronics
Shipping Weight (lbs): 0.3
Dimensions (in): 6.4 x 5.7 x 0.6
MPN: 14909
Model: 14909
UPC: 895963149091
EAN: 0895963149091
ASIN: B000GFJAB4
Availability: Usually ships in 1-2 business days
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| Features:
| • | ATX Power Supply Tester can easily check power supply | | • | LCD displays voltage | | • | Can test power supplies with various connections | | • | Alarm warns of overvoltage, undervoltage, no voltage |
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| Editorial Reviews:
Product Description
The product designs with LCD to show ATX power voltage. Easy to plug with ATX power 24 pin and plug in (P4/P6/P8) to show the voltage on the LCD panel.
Amazon.com Product Description
The Coolmax LCD 24-Pin ATX Power Supply Tester makes it easy to check an ATX power supply. Made of durable aluminum with an LCD display, it is simple to plug in, and then the LCD displays the voltage. It is great for testing power supplies with various connections. A built-in alarm tells you when there is overvoltage, undervoltage, and no voltage.
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| Customer Reviews: Read 5 more reviews...
 Coolmax power supply tester August 31, 2008
John M. Clark (Modest, CA USA)
I bought this for my grandson who is taking computer science in college
The delivery was promt and he says that it works fine. He uses it in his computer repair work tah he does as a side line. He is very satisfied with the product.
 Nice Unit! July 31, 2008
EDW (NJ, USA)
Pros:
Shows one decimal place precision measurements of +3.3V, +5V, +12V, +12V (second rail), and +5V standby via a nice blue backlit LCD display.
Displays the time in milliseconds it takes for the Power Good signal to go high (this is open drain) on the LCD (3 digits).
Shows go / no-go voltages on SATA / 4-pin MOLEX / floppy connectors via green LEDs.
Cons:
I would like another decimal place on the voltage measurements, but this is just a tiny con as one decimal place is sufficient for the tolerances involved (+/- 5% & 10%).
SATA connector isn't keyed, but putting it on backwards shouldn't destroy anything.
It isn't obvious which way the motherboard connector goes on as it doesn't have the lock mechanism and is a fairly tight fit.
No manual, just slightly confusing minimal text on the back of the display card - not a big deal as this unit is really simple.
Other thoughts:
The unit I received has a power button on the front, which you have to hold depressed for the unit to operate. This makes sense as it must load the supply and heat up somewhat. They must have updated the design without updating the pix.
The go / no-go LEDs that everyone is crabbing about make perfect sense to me - the voltages themselves are already measured at the mobo connector.
 CHEAP! July 29, 2008
Dumb Guy
I did a test of one power supply to try it out. Then about a week later I tried it again and the second power supply I tested it died. I knew it died before trying it again because I could smell a burnt smell. Tried it again to make sure and yep its fried!. Couldn't get my money back since its past the 30 days AMAZON offers so I am getting a replacement. I wonder how long the new one will last....?
CoolMax review July 26, 2008
R. Morin (Providence, RI, USA)
Great tester for the typical ATX power supply in that the output readings are accurate and quick. No guessing at whether the P.S. is working..
However, one problem I noted was that it was unable to test the latest HP/Compaq units. I'm told by Coolmax that those P.S. are non-standard and though the 20/24 pin plug looks the same, the pin-outs are different. Coolmax was unable to offer a work around. In defense of CoolMax though, Nobody in our IT dept. has been able to find a reliable tester for those P.S.
A real time saver July 19, 2008
E. Ford (Guyana)
1 out of 1 found this review helpful
If you're looking at this, then you know what this is used for - but - don't be misled into thinking that the cheaper ones with the LEDs do the same job, this baby shows you the actual voltages as well as the time power good takes to go low.
I've had defective power supplies that test good with the LED style testers and wasted time swapping out system boards, only to find it was, in fact, the power supply, and this baby was the only thing that would show it.
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