PSU Blown Up. Recommend Replacement

airbusA346 · 16 Jul 2017 at 18:12

Hi

Think my PSU has just given up and decided to die while I was watching a video.

Have changed the fuse and tried a different cable, but it doesn't turn on.

It is a SUPER FLOWER LEADEX GOLD 650W FULLY MODULAR "80 PLUS GOLD" POWER SUPPLY brought from OCUK in April 2015.

Please recommend me a replacement modular 650W PSU for not too much money.

Thanks

airbusA346 · 16 Jul 2017 at 18:53

Nothing happens when doing the paper clip test.

ASUS Sabbertooth 990FX
AMD FX-8120 (not OC'd)
8GB RAM
2GB Palit GTX 760

airbusA346 · 16 Jul 2017 at 19:46

HoneyBadger said:
Did you add like a fan or something as well as the paper clip? Some PSUs will only work if something is drawing current.

What's the warranty on that unit? It must be covered, surely?

I can't add a fan, because none appear to be powered from the PSU.

What ever the warranty is I need a replacement, so can't wait for it to be repaired/replaced.

airbusA346 · 16 Jul 2017 at 19:59

EsaT said:
If it took out any bigger mains fuse (like 10A) and doesn't start now then it's likely seriously broken from primary side.

Here's few currently in stock 650W modular PSUs
https://www.overclockers.co.uk/bitf...plus-gold-modular-power-supply-ca-22b-bx.html
https://www.overclockers.co.uk/xfx-...old-fully-modular-power-supply-ca-027-xf.html

Though 550W PSU would be enough.
(definitely no overload to kill that PSU)

Thanks.

Strange that it went for no obvious reason after being on for 6 hours today (before it broke).

How does the warranty work? May as well get it repaired as a spare.

airbusA346 · 18 Jul 2017 at 19:46

Well, it looks like I've 'wasted' £92.

Put new PSU in, pressed power button, there's a click, CPU fan tries to spin then nothing else happens, press power button again and nothing. Only way to make it click etc again is to switch the main PSU switch off and on. :mad:

airbusA346 · 18 Jul 2017 at 21:45

There is definitely power to the motherboard now, because the power led is illuminated green on the board. Tbh not sure if it was illuminated before, because I didn't think to look.

airbusA346 · 19 Jul 2017 at 08:50

EsaT said:
That LED tells 5V standby is working...
Or ar at least close enough to 5V to light up that LED and not too much to it into "smoke emitting diode".

You could try narrowing down location of problem by first removing graphics card.
And if no change putting it back and disconnecting CPU's power cable.
While PC won't boot properly it should stay powered on in BIOS/POST phase in both cases.

Though short circuit shouldn't damage correctly working PSU so did you actually measure outputs from that Super Flower?

It gets nowhere near BIOS/POST. I turn the power on, press the on button, there's a click, the CPU fan moves a few Millimetres (then returns to original position) and nothing else happens. Pressing the power button again does nothing... No click, or movement. Only way to replicate is the turn mains off and on.

I did the paper clip test and got nothing. I don't have any case fans to test with it because both my fans are powered and run from the motherboard.

airbusA346 · 19 Jul 2017 at 08:56

Also surely if the CPU, memory or graphics cards were broken, the computer would still boot to a point?

airbusA346 · 19 Jul 2017 at 10:12

EsaT said:
If there's no output voltages with PS-ON pin (green wire) connected to black that tells there's problem in Super Flower.

Good job the guide said which pins to use, because there are no coloured wires. All black.

EsaT said:
It wouldn't boot.
But it would stay powered, PSU on and fans/HDDs running.

Yeh I know it wouldn't boot to Windows, but it should in theory get as far as BIOS/POST etc, which is doesn't. No HDD's running etc.

EsaT said:
As random shot you could try switching motherboard's battery.
Though dead CMOS/RTC battery shouldn't be able to cause short circuit like symptoms and definitely no shut down because while PC is powered there's nothing needing that battery power.

Certainly is a long shot. Seen as the computer died mid flow.

airbusA346 · 19 Jul 2017 at 18:33

Danny75 said:
My computer wouldn't start up at all (no post, no boot, no lights) with a dead graphics card in it. FWIW.

Just taken the graphics card out, no change.

airbusA346 · 19 Jul 2017 at 19:40

Danny75 said:
My CPU/mobo has onboard graphics, though. The FX 8120 has none and the 990FX motherboard doesn't seem to have graphics ports either (have looked at the specs but please correct me if I'm wrong). It may not be the GPU but I think the only way to test is trying the GPU in a different system, or a different GPU in your system.

It doesn't have onboard graphics, which I'm surprised new boards do.

Don't have another system or GPU.

airbusA346 · 19 Jul 2017 at 21:49

If the card was causing the issue, then surely taking it out, would mean the computer would boot to BIOS/POST?

airbusA346 · 21 Jul 2017 at 20:15

Borealis said:
The FX-series need a GPU to POST, even it's the most basic card. They have no onboard GPU. Where are you based? I've got a few cards/PSUs in my collection of spares. If you're local, I'd be happy to help out.

Managed to find an old XFX 7600GT and it hasn't changed what the computer is doing. I've decided to upgrade to Ryzen and the last few parts should arrive tomorrow.