Originally Posted by kevmatic
Even paper clip testing a PSU with a multimeter isn't going to tell you if its bad or not. A multimeter test will do you that its putting out the correct voltages on average, but not if its collapsing under load, generating excessive ripple, has an intermittent fault, or an overheating problem.
If I were you, I'd just get the new mobo and try it. If it still has problems, buy a PSU. That way, you won't be replacing anything that you don't need or want to replace. Take the money you would spend on a super-cheap, somewhat dangerous multimeter and put it towards the possibility of a new PSU.
Remember, you are trying to troubleshoot your PC without any troubleshooting tools. I'm not saying it isn't sometimes possible to do so, but at some point you will have to start compromising.
You're right about the first part, I totally agree with that. All the paperclip + multimeter test is supposed to tell you is if the PSU is outputting anything within the correct range. Its a very easy quick and dirty way of knowing a LOT more about your PSU than just turning on the PSU and seeing if the fans spin.
Originally Posted by jason387
Is there any other test for my psu??
The OP asked specifically is there was any other way to test a PSU, and you will agree that this is another way to test it. And short of having an oscilloscope, its probably one of the best. More info is always better than less IMO. Its not perfect, but like you said, we're trying to troubleshoot without many tools, and we're going to have to start compromising somewhere.
I agree that the problem is most likely the Mobo, and that since he's already wanting to replace it, its a great place to start with this type of troubleshooting (especially when there aren't spare parts enough to test everything properly).
However, I do have issue with you calling a multimeter "dangerous". Have you ever used one? Its like calling a ruler or tape measure dangerous. The only possible way in my mind that it could be dangerous is if you take the prongs/electrodes and somehow impaled yourself or something else with them (which would be quite hard to do, like doing the same thing with chopsticks). Other than that, maybe if it was faulty and gave you a bad reading somehow, but even that wouldn't really be dangerous.
I've actually never seen one of these before, its a interesting find. It appears to do exactly what a multimeter does, but is designed for making it easier to test for PSU's specifically. Thats both useful, and kind of limiting. Multimeters aren't very difficult to use, but I can understand why someone would want one. Luckily it doesn't cost very much either
. I think if it were me, I'd stick with the multimeter just because it can be used in a larger variety of ways (checking voltages for fans, resistance in circuits, checking to see if a wire is actually getting power, etc. But thats still a cool gizmo
So, to the OP, I think I'd go ahead and purchase that new Mobo like you're planning on, and then see where you are when the dust settles. If we're right, that should take care of the problem. If we're not, then its likely the PSU, if you can test it somehow a bit more before you buy it thats cool, but a new one usually eliminates that component from the "potential problem" list.
Good luck, and let us know how it goes
.Edited by logan - 8/8/13 at 9:10am