New psu doesnt work but old one does

koro35 · Aug 1, 2014

Ok so I recently bought a new psu seeing as multiple people said I should, i bought XFX XXX Edition 850W 80+ Bronze upgrading from Cooler Master G650M, 650W PSU.
However when I install the new PSU, my computer doesnt start. I made sure i plugged every cord in correctly, yet the computer doesnt start, I dont hear a fan or anything, all I hear is a short sound from the PSU itself.

SPECS:
Cooler Master G650M, 650W Modular PSU / XFX XXX Edition 850W 80+ Bronze

Intel Core i5-4690K Processor

MSI Z97-G43, Socket-1150

HyperX Fury DDR3 1600MHz 8GB Black KIT

(EVGA) NVIDIA GeForce GTX 780 Ti 3GB superclocked

Kingston V300 SSD 2.5" 120GB SATA 3.0

Some random harddrive with 1 TB

JuniorPCBuilder · Aug 1, 2014

It appears you have a dead PSU.

Dark Lord of Tech · Aug 1, 2014

Double check all your connections , it's rare to get a DEAD Seasonic made power supply.

koro35 · Aug 1, 2014

I check everything, it was all plugged in.

Dark Lord of Tech · Aug 1, 2014

Switch on in back of supply?

koro35 · Aug 1, 2014

Dark Lord of Tech · Aug 1, 2014

I would say it's time to RMA it if the other PSU is working fine it must be DOA.

Pondering · Aug 1, 2014

does the XFX work in another build? I have 12 power supplies (not including the old OEM ones) and 4 builds. I test my XFX power supplies on all 4 builds as well. RMA is easy but shipping it back is kind of expensive. Double check everything one more time and then start the RMA process.

Dark Lord of Tech · Aug 1, 2014

He already did that , first thing I told them to do.

God-father-board · Aug 1, 2014

If you are absolutely, positively sure your connections are secure, check them again. No but seriously that's a quality PSU. But I guess some lemons slip by. Just do the paper clip test and check the volts with a mutimeter

Dark Lord of Tech · Aug 1, 2014

Yes we both told him this already.

koro35 · Aug 1, 2014

I don't have a mutimeter.

God-father-board · Aug 1, 2014

Test the PSU using a paper clip and a multimeter is what Im suggesting

God-father-board · Aug 1, 2014

koro35 :

You don't really need one. If you put a paper clip in the green pin (psu_on) and a black pin(ground) of the 24pin cable the fan should cut on.

Dark Lord of Tech · Aug 1, 2014

http://www.youtube.com/watch?annotation_id=annotation_2250900693&feature=iv&src_vid=khpnx21oydg&v=ixcWCrYpw3Y

koro35 · Aug 1, 2014

Wow ok, I'm stupid, I got the fan to work, but the pc didnt start

Dark Lord of Tech · Aug 1, 2014

The old supply works perfect , but the newer and much better quality power supply doesn't.

God-father-board · Aug 1, 2014

Yeah that's pretty odd. Since you don't have a tester just short the green and black pins but this time with everything plugged.

Pondering · Aug 2, 2014

ok, my new xfx ts 550 died after an hour however the box was crushed, not the interior xfx box but the exterior box that it was shipped in and the air-foam was all popped. I am going to test it again tomorrow but the fan didn't spin up with the paper clip test since the EVGA 750 B2 came with that 24 pin connector that mimics the paper clip test and when I flipped the switch, the fan didn't run at all.

New psu doesnt work but old one does

Honorable

Reputable

Retired Moderator

Honorable

Retired Moderator

Honorable

Retired Moderator

Honorable

Retired Moderator

Reputable

Retired Moderator

Honorable

Reputable

Reputable

Retired Moderator

Honorable

Retired Moderator

Reputable

Honorable

Share this page