Bad Power Supply?

J_Donk · Dec 15, 2016

I have an older system I've been trying to get up and going again. I was using to test some GPUs (both of which are good, I am currently using one in another system). When I was swapping them all of a sudden, when I hit the power button, the fan spins but the HDDs don't boot, no video signal, etc. Pulled out the RAM and started up, no beeps. This tells me it's probably either PSU or mobo. I don't have a multimeter at the moment, but I pulled the 24-pin and jumped the grn n blk with a paperclip, hit the power switch and nothing. But if I connect the PSU to the mobo, the fan will turn on, but nothing else. Does this sound like a bad PSU? I don't have much experience troubleshooting PSUs. Anything else I could try?

CountMike · Dec 16, 2016

Yes, it does sound like bad PSU.

J_Donk · Dec 17, 2016

I got bored today so I decided to test the power supply on my other system. I held my breath, hit the power switch and it worked fine, so the PSU is not the bugaboo here. Would a bad mobo be the only other option?

lakimens · Dec 17, 2016

I hate to tell you but... If you want help, you're gonna have to help us help you.
List your build.

J_Donk · Dec 17, 2016

It's just an older stock gateway system- model# e6300. the specs are here: https://www.cnet.com/products/gateway-e-6300/specs/. I am just trying to run it off of the onboard GPU and with 1gb of RAM. Anything else?

CountMike · Dec 18, 2016

That's an older technology, check electrolytic capacitors on MB, Look at their tops and X etched on them. They should be all flat. A bulge on the top signals bad capacitor and problems with starting. I must have changed hundreds of them in the past.

J_Donk · Dec 18, 2016

Yeah, I know it's older. I've already checked that a few times, no bulges that I can see.

lakimens · Dec 18, 2016

Well, I'm not an expert on this, but since it's not the PSU, it seems like it's the motherboard. I don't think there's anything else to cause this.

J_Donk · Feb 24, 2017

lakimens :

Agreed. I think it's the mobo, as from what I've heard Intel CPUs (or most of them for that matter) rarely are the thing to fail. Thanks.

lakimens · Feb 24, 2017

Did you fix it already?

J_Donk · Feb 24, 2017

lakimens :

No, at this point, I am just using it for a project. I don't care that it works or not, just that I really want to know WHY it isn't working, you know? Unfortunately, I don't have anything else around to test/swap parts with. I may try looking for a cheap CPU on eBay to test that, but at this point I am thinking it is most prob the mobo. I actually just was messing with it today and everything is plugged in (I mean, Gateway connectors are pretty idiot proof). I did however notice a little 2-pin at the back which was unplugged, but it looks like it's just an intrusion switch and having it plugged in or not doesn't change anything. But I have nothing installed, just PSU to mobo/CPU, so I should be getting beep codes at least.

lakimens · Feb 24, 2017

CPU's very rarely fail..But good luck.

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Bad Power Supply?

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