Help: Defect Power Supply?

[hansolo1337]

Hello Friends, 

 

i need your help, guys!

 

My brother had an old i7 4770, GTX 970 system staying around for like 1,5 years or so, because he switched to using his Laptop as his daily driver. Now he thought, that it would be a nice idea to reuse the system. At least because it´s there and it would be a complete waste to have it just staying around and collecting dust. So we both decided to install a SSD in it and reinstall windows. The installation process went absolutely well, but then we put the power cable in the power supply and there was kind of a electrical noise coming from the power supply. After that we immediatly pulled the cable out of it and overlooked it, if it has any signs of burn damage through an electrical discharge or so, but we found nothing at all. I know, it could be there, even if we cant see it. Then we put the power cable back in the power supply, pressed the power button aaaaaaaaaaand nothing. I disassembled  every not 100% necessary cable out of the system and nothing works. So this is the situation now.

 

We dont know if only the power supply is dead or the other components as well. Is there any way to make at least a guess if the other components are dead without damaging other parts, that we have laying around? 

I have another power supply in my PC as well, but we dont want to kill it too by installing it in my brother´s pc. 

 

Am I right, when I say that the best option, that we have is buying a cheapo power supply from amazon and try starting it with that? 

 

This is my first Post, so .. hi linus tech tips forum :D big fan :D I assure you, that the damage does not come from letting it fall down even tho i learned every thing i know about PCs from Linus :D joke haha

[mariushm]

Most likely the power supply died. It's unlikely other components in your PC are faulty or were affected by power supply crapping out.

I would have no problems trying to start the system with another power supply.

 

The electric noise could be caused by anything.

It could be a simple cable inside the power supply becoming loose (for example the wire between the power switch and the circuit board is broken, so power doesn't get into the power supply anymore)

It could be a chip that died, or a component like a capacitor for example, breaking down.

Power supplies typically have protections and shut down gracefully when they die, and should not damage the components inside the PC.

 

[hansolo1337]

Thanks man, today i try his components with my power supply and report afterwards.