Having issues with my tower. Everything worked fine yesterday & nothing today. Try to turn it on no noise nothing but a green light on board. We just replaced power supply 3 days ago, HELP i need my puter for work & schoolWhy did you replace the PSU and what PSU is it? I would check that the new PSU is not faulty, take it back to the store and have them check it, or try it in another computer. Also, a word of warning, never ever take a PSU apart because it holds an electrical CURRENT even when it is switched off.replaced it b/c it wasn't working i would be on doing m thing & all of a sudden computer would turn off without warning it has been working great since i replaced it until now Quote from: Leetonsmommy on February 17, 2012, 07:54:07 AM

replaced it b/c it wasn't working i would be on doing m thing & all of a sudden computer would turn off without warning it has been working great since i replaced it until now

Why did you replace the PSU and what PSU is it? I would check that the new PSU is not faulty, take it back to the store and have them check it, or try it in another computer. Also, a word of warning, never ever take a PSU apart because it holds an electrical current even when it is switched off.

but pulling things apart is the best way to learn first hand how they work.
i do it all the time and have no issues

If you can afford the hospital bills, go straight ahead. You were advised this for a reason.

and your point?
i know what im doing!
some people just wont accept people doing things that they have no license to do!
this is y the world is becoming to pc!
1 day u will need to be supervised wipeing ya rear end!

and your point?
i know what im doing!

Also, a word of warning, never ever take a PSU apart because it holds an electrical current even when it is switched off.

Salon Trout, It would be interesting to know why you think it's not true? I myself believe it to be true because I have been taught that many electrical devices can hold an electrical charge for weeks after they are switched off, including power supply units.

We've all HEARD it at least once. "Dude, don't open up that power supply, the capacitors will shock you and you'll die! You have to unplug it, flip its switch twenty times, leave it out overnight, then you can open it up; but don't forget to wear rubber gloves and to say the special shock-warding chant!"

It's a tiresome myth, perpetuated by CRT repair technicians and overzealous nervous ninnies. While capacitor safety is very important, when it comes to consumer power supplies life is a lot simpler than what this myth would lead you to believe.

[...]

a capacitor can store a charge for a period of time after the circuit itself is no longer charged. While diodes, transistors, and resistors become inert instantaneously or within nanoseconds of voltage difference being lost, the capacitors in consumer electronics can hold onto charge for up to whole seconds.

Whole seconds. Consider a moment, The primary capacitors of even the most powerful ATX power supply, 1200W and up, would drain to safe levels (voltage too low to overcome your body's natural resistance) in less than two or three seconds when fully charged, even if left entirely alone, due to residual draw in the circuit. With lower wattage PSUs the discharge is much quicker; under 500W, a tenth of a second is not unlikely. The charge held by electrolytic and polymer capacitors in PSUs is not that extreme, and the natural resistance in these circuits is low. The capacitors discharge quickly and present little danger of shocking unless you're mucking around with the PSU while it's on (in which case you have more problems than just lax capacitor safety).

I've tried it with a Delta Basiq. Primary cap held a meaningful charge for all of 10 seconds, after that it was down to a couple volts. Gotta love bleeder resistors.

Even with no bleeder resistor the caps discharge themselves quickly.