Power Supply bad?

November 22, 2009 at 18:43:26
Specs: Windows 07.11.2009
I bought new mobo, cpu, memory. Installed everything, and all fans spin, power light comes on but stays solid.. no blinking. I took out memory and got no beeps, also took off cpu fan and turned on for few seconds.. and it didnt get hot. So will that mean the power supply is bad. Also what are the characteristics that a hard drive will be bad.. i still think its the power supply, but how can i test and be sure before i buy another one?

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#1
November 22, 2009 at 21:04:57
You can test the main connector (20 pin or 20+4 pin or 24 pin) that connects to the motherboard with either a multimeter or a power supply tester. You can put the harddrive in another system as a slave to check it. My money is on the psu though. That is mainly because I have seen many failures lately. How old is the psu and what brand, wattage?


Likely

I want to go like my grandfather did. Peacefully in his sleep. Not screaming at the top of my lungs like the passengers in his car.

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#2
November 22, 2009 at 21:15:22
doubt it's the hard drive unless there's a dead short. if you disconn. pwr from it, you should get the bios POS/boot screen if the hd was shorting all pwr from mobd. Otherwise since all new components, might be incompatibility. does the F1/del key "dance" at boot give you bios setup? If not, probly RAM problem (not necc. bad, just problem).
ps: what LikelyS said about ps test I agree. Usually if PS craps out you get nothing (no fans etc) at all, but that does not mean PS is ok as amp output might be insufficient to drive system complete. (one other option if you suspect this is remove ALL removable components except ram, including hard drive, and see if you got POST screen).

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#3
November 23, 2009 at 06:28:19
OK, so you're saying you just went ahead & threw all your hardware in the case without benchtesting it 1st? If that's what you did, your problem could be almost anything. Benchtesting is an extremely important step that should NOT be skipped when building a PC!

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#4
November 23, 2009 at 10:44:23
ok well ill check the PSU with a voltmeter and everything i have heard people say its that.. and I didnt feel i needed to bench test it cause it was replacing parts i thought went bad.. and say thing was happening to my other parts.. everything would light up fans turn on and no output to any of the other devices..

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#5
November 23, 2009 at 14:00:03
Checking with a voltmeter may or may not indicate that there's a problem. There is no easy way to check amperage & THAT is what's important. The +12v may measure at 12v, but is it capable for producing 18A at 12v? Regardless, you still should have benchtested before putting your hardware in the case.

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#6
November 23, 2009 at 21:55:07
I found in a few instances that the main plug going in to the M. board was wrong. The plug worked OK, but the wires were in a different order. Thus got good current/conduction but was going to wrong place. Make sure when they swapped out orange for a yellow that is going to proper pin and of proper current.

Took the power supply back to shop, and got a different one then.


Wm.


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