Is my PSU dead?

Ravenas · Oct 22, 2009

Lazzer408 said:
He stated in post #8 that it powered up off his old supply but he had no post/video. Note his gfx cards were not plugged in at the time.

Here's some causes:

No power: (check in this order)
-short circuit (psu in protection)
-overload (psu in protection)
-incorrectly inserted connector causing the short (psu in protection)
-defective psu
-defective cpu
-defective motherboard

No post/video: (check in this order)
-defective memory (try known good ram)
-defective peripheral (remove all peripherals and try onboard or known good video card)
-defective cpu (try known good cpu)
-defective psu (poor regulation or missing voltage rail)
-defective motherboard

Take steps in any order you want but at least try and eliminate the causes one at a time.

No my cards were both plugged in I just didn't have a SLI bridge connected, so the cards had red lights. Now the it won't even boot for a split second like before.

Lazzer408 · Oct 22, 2009

Ravenas said:
No my cards were both plugged in I just didn't have a SLI bridge connected, so the cards had red lights. Now the it won't even boot for a split second like before.

If the cards have the red lights, this points back to your psu and the 12v rail missing or shorted.

twicksisted · Oct 22, 2009

Lazzer408 said:
Perhapse you are right. But taking unprofessional pot shots at problems isn't proper diagnostics. You could be right most of the time but with proper diagnostics you'll be right every time.

fire away dude.... i wont let my personal experience on the matter stand in your way

Ravenas · Oct 22, 2009

Lazzer408 said:
If the cards have the red lights, this points back to your psu and the 12v rail missing or shorted.

Hey you can't beat an Antec that lasts 3 years! Lol! :laugh:

Lazzer408 · Oct 22, 2009

twicksisted said:
fire away dude.... i wont let my personal experience on the matter stand in your way

experience or luck?

Already his problem is pointing back to the psu. The lights on the videocards come on when it has power from the mobo but no power from the 12v aux connector.

Ravenas, Do you have a multimeter?

EDIT- It also makes sense because he said his cpu fan wasn't spinning. That's also powered from the 12v rail.

Ravenas · Oct 22, 2009

Lazzer408 said:
experience or luck?

Already his problem is pointing back to the psu. The lights on the videocards come on when it has power from the mobo but no power from the 12v aux connector.

Ravenas, Do you have a multimeter?

No multimeter. The thing is I tried another PSU, and the same thing happened. I'm not sure what the Watts were on the other power supply, but he said it was a good power supply.

Lazzer408 · Oct 22, 2009

Ravenas said:
No multimeter. The thing is I tried another PSU, and the same thing happened.

A fried cpu can bring down the 12v rail also. I've seen that on AMD systems before. We need to break it down to the bare-bone setup. Install the cpu, one stick of ram, and a videocard that doesn't use external power. Connect nothing else. If you still can't post then your looking at only the cpu, ram, and mobo being the problem. Try one of the other sticks of memory. If still nothing then yes your cpu or mobo could be toast.

twicksisted · Oct 22, 2009

Lazzer408 said:
experience or luck?

Ok so every post i make to try and help the person with the issue, you have to try and tear apart... look the threads died now... good for you

lol ok so the best that you could come up with is that perhaps his CPU, 12v rail, motherboard or Ram is bust.... well done... thats pretty specific there nice

Im leaving this thread never mind i had a near identical motherboard with the exact issue and fixed it

Lazzer408 · Oct 22, 2009

twicksisted said:
Ok so every post i make to try and help the person with the issue, you have to try and tear apart... look the threads died now... good for you

lol ok so the best that you could come up with is that perhaps his CPU, 12v rail, motherboard or Ram is bust.... well done... thats pretty specific there nice

Im leaving this thread never mind i had a near identical motherboard with the exact issue and fixed it

My point to you was how to properly diagnose a system not to just guess based on a few symptoms or your personal experience. I'm attempting to guide the OP through the steps rather then tell him go out and buy a new motherboard with the risk of a fried CPU blowing out the replacement board. I've seen it happen. I didn't want to start a pissing match with you twicksisted. Like I said, you could be right. Wouldn't it be worth a few extra steps to try to help the OP narrow it down?

twicksisted · Oct 22, 2009

Lazzer408 said:
My point to you was how to properly diagnose a system not to just guess based on a few symptoms or your personal experience. I'm attempting to guide the OP through the steps rather then tell him go out and buy a new motherboard with the risk of a fried CPU blowing out the replacement board. I've seen it happen. I didn't want to start a pissing match with you twicksisted. Like I said, you could be right. Wouldn't it be worth a few extra steps to try to help the OP narrow it down?

ok cool fair enough dude.... sorry if i took you the wrong way on this.. its a bit hard with text and i just had a bad vibe with your repeated posts toward me... anyways
maybe i am a bit touchy today hehehe... bad day at work etc...etc.. (man period)
no problems my side dude

important thing is that we help this guy out and get his problem sorted

Lazzer408 · Oct 22, 2009

twicksisted said:
ok cool fair enough dude.... sorry if i took you the wrong way on this.. its a bit hard with text and i just had a bad vibe with your repeated posts toward me... anyways
maybe i am a bit touchy today hehehe... bad day at work etc...etc.. (man period)
no problems my side dude

important thing is that we help this guy out and get his problem sorted

It's all good. Where did the OP go? :confused:

Ravenas · Oct 22, 2009

K... I tricked the power supply with a paper clip... Still does the same thing and all I had plugged in was the fans. It just flicks on and off. So I guess that means the power supply is dead.

What's more, if I used a different power supply on the mobo and tried to get it to boot... That means the mobo is dead too right? As well, the CPU could be potentially dead as well?...

p_o_s_pc · Oct 22, 2009

Ravenas said:
K... I tricked the power supply with a paper clip... Still does the same thing and all I had plugged in was the fans. It just flicks on and off. So I guess that means the power supply is dead.

What's more, if I used a different power supply on the mobo and tried to get it to boot... That means the mobo is dead too right? As well, the CPU could be potentially dead as well?...

had kinda the same problem. I said hell with it and built another rig then later got the other stuff working :laugh:

twicksisted · Oct 22, 2009

Ravenas said:
K... I tricked the power supply with a paper clip... Still does the same thing and all I had plugged in was the fans. It just flicks on and off. So I guess that means the power supply is dead.

What's more, if I used a different power supply on the mobo and tried to get it to boot... That means the mobo is dead too right?

hmmm.... if the psu kicks off when you paper clip it... it could be that theres not enough load on its rails.... try pluigging in some HDD's to up the load a bit... should stay on...
(take the fans off completely as you said you thought there was a short on one of the 4pin fan plug molex connectors and thatll rule that out of the equation)

Ravenas · Oct 22, 2009

twicksisted said:
hmmm.... if the psu kicks off when you paper clip it... it could be that theres not enough load on its rails.... try pluigging in some HDD's to up the load a bit... should stay on...
(take the fans off completely as you said you thought there was a short on one of the 4pin fan plug molex connectors and thatll rule that out of the equation)

I've tried with the HDD and the graphics cards...

p_o_s_pc · Oct 22, 2009

Ravenas said:
I've tried with the HDD and the graphics cards...

unplug the gfx cards and just use the HDD

Ravenas · Oct 22, 2009

p_o_s_pc said:
unplug the gfx cards and just use the HDD

I've tried that too.

twicksisted · Oct 22, 2009

Ravenas said:
I've tried that too.

ok if you do the exact same thing with the other PSU and that works properly... then id say your old PSU is borked.... (diddnt expect that to be honest buy hey)

so the new PSU youre testing with that works with the system... what are its specs?...

Ravenas · Oct 23, 2009

twicksisted said:
ok if you do the exact same thing with the other PSU and that works properly... then id say your old PSU is borked.... (diddnt expect that to be honest buy hey)

so the new PSU youre testing with that works with the system... what are its specs?...

No idea just one my local computer repair store let me use.

System Name	AM5
Processor	AMD Ryzen R9 7950X
Motherboard	Asrock X670E Taichi
Cooling	EK AIO Basic 360
Memory	Corsair Vengeance DDR5 5600 64 Gb - XMP1 Profile
Video Card(s)	AMD Reference 7900 XTX 24 Gb
Storage	Samsung Gen 4 980 1 TB / Samsung 8TB SSD
Display(s)	Samsung 34" 240hz 4K
Case	Fractal Define R7
Power Supply	Seasonic PRIME PX-1300, 1300W 80+ Platinum, Full Modular

Processor	i7 2600k@4.6ghz
Motherboard	MSI z68ma-ed55
Cooling	Silentx Extreem 120mm
Memory	2x4gb XMS 7-8-7-20 1600
Video Card(s)	HD6870
Storage	2x128gb Kingston Hyper-X (Raid0), 2x750gb RE3 (RAID1), 2x750gb RE3 (RAID1)
Display(s)	Soyo 24", Gateway 22"
Case	Fractal Design Arc Mini 6x120mm fans.
Audio Device(s)	Onboard
Power Supply	Zalman 750w
Software	Windows 7

System Name	PC
Processor	i7 9700KF
Motherboard	MSI Z390 A PRO
Cooling	Noctua NH-U14S
Memory	32GB Corsair Vengeance DDR4 3000mhz
Video Card(s)	PALIT RTX 4070 Dual 12Gb
Storage	2X Crucial MX500 2TB SSD, Samsung 850 pro 512gb SSD
Display(s)	DELL C34H89x 34" Ultrawide
Case	Corsair Obsidian 550D
Audio Device(s)	Audioengine A5+ Speakers
Power Supply	Corsair RM750
Mouse	Logitech G403
Keyboard	Corsair Vengeance K70
Software	Windows 10 64bit

System Name	AM5
Processor	AMD Ryzen R9 7950X
Motherboard	Asrock X670E Taichi
Cooling	EK AIO Basic 360
Memory	Corsair Vengeance DDR5 5600 64 Gb - XMP1 Profile
Video Card(s)	AMD Reference 7900 XTX 24 Gb
Storage	Samsung Gen 4 980 1 TB / Samsung 8TB SSD
Display(s)	Samsung 34" 240hz 4K
Case	Fractal Define R7
Power Supply	Seasonic PRIME PX-1300, 1300W 80+ Platinum, Full Modular

Processor	i7 2600k@4.6ghz
Motherboard	MSI z68ma-ed55
Cooling	Silentx Extreem 120mm
Memory	2x4gb XMS 7-8-7-20 1600
Video Card(s)	HD6870
Storage	2x128gb Kingston Hyper-X (Raid0), 2x750gb RE3 (RAID1), 2x750gb RE3 (RAID1)
Display(s)	Soyo 24", Gateway 22"
Case	Fractal Design Arc Mini 6x120mm fans.
Audio Device(s)	Onboard
Power Supply	Zalman 750w
Software	Windows 7

Is my PSU dead?

Ravenas

Lazzer408

twicksisted

Ravenas

Lazzer408

Ravenas

Lazzer408

twicksisted

Lazzer408

twicksisted

Lazzer408

Ravenas

p_o_s_pc

F@H&WCG addict

twicksisted

Ravenas

p_o_s_pc

F@H&WCG addict

Ravenas

twicksisted

Ravenas

System Name	el'lappy\|Cruncher \| Cruncher 2
Processor	intel C2D T6400 \| i7 3770k @4.2ghz \| AII X2 220 @3.4ghz
Motherboard	some Acer \| Asus P8Z77-V Pro \|Gigabyter GA-M61p-S3
Cooling	dual 80mm cooling fan \| WC'ing ) \|cheapo
Memory	2x2gb ddr3 \| 2x2gb Ripjaws 1600 \|4x512mb D9s
Video Card(s)	onboard \| 60 1GB(hd7770 ) \|8800GTS
Storage	Momuntus xt 320gb \|Kingston Hyper X 120gb SATA III\|500gb WD
Display(s)	17in \| 42" 1080P HD 3D TV
Case	lappy case \| CM HAF XB \|none yet
Audio Device(s)	onboard \| onboard \| onboard
Power Supply	Dell brick w/ acer end end \| Antec EW 650w \|Antec SP 350w(upg.soon)
Software	Windows 7 Ult. 64bit---->------->