My power supply cut the fuse, when i switch the on-off switch on it.

Ryrmos

Commendable
Mar 31, 2016
2
0
1,510
I'm talking about the PSU power button, not the computers power button.
What can I do?
Is it dead?

UPDATE: It's the household AC circuit breaker/fuse, that blows.
The PSU is FSP Raider S 650W.
Nothing is pulling too much power from the PSU, there is only the motherboard, an I5-4690 CPU and the RAM-s in it. (No VGA)

I had no problem with the PSU until now. The first time it blown the fuse,then I tried switching it on until magically the computer started... I turned off the computer, then turned off the PSU (with the switch on it) and changed the power cable (it tought,that the power cable was faulty). After the change, I turned on the PSU (not the computer), it made some quick electricity sound ,then blown the fuse again. Ever since i didn't touched it.
(Sorry for my grammar, english is not my native language)

Thank you
 
Solution
If it is tripping the circuit breaker in your house (blowing the fuse), then you probably are trying to draw too much current on that circuit in your house. Are there lots of other things besides your computer on that circuit?

Can you try the computer on a different circuit in the house? If doing so trips the second circuit, then I would suspect a short in your computer's PSU. Don't open it up. Even without power connected, the capacitors can contain high voltage that could seriously shock you.
Depending on the PSU you may be able to replace the fuse or reset the breaker. Can't tell you without knowing the make and model of the PSU.

More important is figuring out why this happened. If you are pulling too much power for the PSU, you will need a bigger one. If there's a short circuit somewhere, that fuse prevented a fire and applying more power can only make things worse. So does your system have any history of odd behavior, have you changed any hardware recently, were there any burning smells?
 
What is this "fuse" that you're talking about? Is it a fuse inside the power supply unit itself or are you talking about the household AC circuit breaker/fuse?

It's not a good sign. It indicates a fault on the high voltage side of the power supply unit. Even be a high inrush current, when the power supply is turned on, can trip a circuit breaker.
 

Ryrmos

Commendable
Mar 31, 2016
2
0
1,510
It's the household AC circuit breaker/fuse, that blows.
The PSU is FSP Raider S 650W.
Nothing is pulling too much power from the PSU, there is only the motherboard, an I5-4690 CPU and the RAM-s in it. (No VGA)

I had no problem with the PSU until now. The first time it blown the fuse,then I tried switching it on until magically the computer started... I turned off the computer, then turned off the PSU (with the switch on it) and changed the power cable (it tought,that the power cable was faulty). After the change, I turned on the PSU (not the computer), it made some quick electricity sound ,then blown the fuse again. Ever since i didn't touched it.
(Sorry for my grammar, english is not my native language)
 
If it is tripping the circuit breaker in your house (blowing the fuse), then you probably are trying to draw too much current on that circuit in your house. Are there lots of other things besides your computer on that circuit?

Can you try the computer on a different circuit in the house? If doing so trips the second circuit, then I would suspect a short in your computer's PSU. Don't open it up. Even without power connected, the capacitors can contain high voltage that could seriously shock you.
 
Solution