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Silverstone PSU won't turn on unless jumped

post #1 of 5
Thread Starter 
I have a Silverstone ST85F-P PSU and for whatever reason decided to go ahead and sleeve the cables before testing the PSU (dumb decision, I know). So when I plug the 24 pin connector into the PSU and then plug the other end to my PSU tester the +12v light comes on for a couple seconds and the +5VSB light stays lit, but the PSU does not come on unless I jump the pins to make it turn on.

I'm not completely sure where to start with the troubleshooting of this. I did not make a pinout diagram originally as I sleeved each wire individually one at a time to make sure something like this did not happen.

Any suggestions on things to try or where to start trying to figure out where I went wrong?

Any help would be much appreciated.

Thanks,

Matt
post #2 of 5
That exact power supply is not listed here.. but there are two silverstones with pinouts:

http://www.overclock.net/t/1420796/repository-of-power-supply-pin-outs/0_20


The 24 pin is also listed in the users manual : http://silverstonetek.com/downloads/Manual/power/EN-ST1000-P-Manual.pdf
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Workstation
(16 items)
 
   
CPUMotherboardGraphicsGraphics
INtel 4770k ASUS maximus extreme VI  EVGA GTX 780Ti SC  EVGA GTX 780Ti SC 
GraphicsRAMHard DriveHard Drive
EVGA GTX 780Ti SC Kingston HyperX Beast 32 GB Kit (4x8 GB) 2400MH... Western Digital 2tb Enterprise Samsung 840 Pro SSD 256GB 
Optical DriveCoolingCoolingCooling
Pawtec External USB 3.0 Aluminum 8X DVD-RW Writ... Primochill ghost fitings Monsoon reservoir Swifttech MCP50x/2  
CoolingCoolingCoolingCooling
Primochill rigid acrylic tubing EK supremacy CPU block - Nickel EK 780Ti waterblocks x3 - Nickel Lamptron FC9 fan Controller 
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9x Primochill Acrylic Radiator Grills Alphacool ST30 280 radiator Alphacool ST30 280 radiator Alphacool 420 80mm 
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Windows 7 Ultimate Dell UW3014 Merc stealth steel series keyboard EVGA NEX1500 PSU 
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by cgipson1 View Post

That exact power supply is not listed here.. but there are two silverstones with pinouts:

http://www.overclock.net/t/1420796/repository-of-power-supply-pin-outs/0_20


The 24 pin is also listed in the users manual : http://silverstonetek.com/downloads/Manual/power/EN-ST1000-P-Manual.pdf

I looked through the manual first and they only have the pinout for the motherboard side, and I think my issue may be in the PSU cable side. The pinouts on the silverstone PSUs listed are different than the PSU I have unfortunately.

I've been looking to just buy a replacement 24pin cable but it seems like all they sell is just the sleeved extensions. This is really frustrating.
post #4 of 5
Quote:
Originally Posted by waffles3680 View Post

I have a Silverstone ST85F-P PSU and for whatever reason decided to go ahead and sleeve the cables before testing the PSU (dumb decision, I know). So when I plug the 24 pin connector into the PSU and then plug the other end to my PSU tester the +12v light comes on for a couple seconds and the +5VSB light stays lit, but the PSU does not come on unless I jump the pins to make it turn on.

I'm not completely sure where to start with the troubleshooting of this. I did not make a pinout diagram originally as I sleeved each wire individually one at a time to make sure something like this did not happen.
Never test a sleeved PSU first with a motherboard. Start by testing it completely disconnected, with a jumper for the Power-On wire, and if you're not sure which is the Power-On wire, don't short anything directly to PSU case ground (because you don't yet know if all the black wires are connected to ground) but instead ground it through a resistor rated for approximately 200-300 ohms, to limit the current to a safe value if you ground the wrong pin. If you don't have the pinout, take a working PSU and measure it while it's running.

Forget PSU testers, and get a voltage meter. The one Harbor Freight often sells for $3 w/ coupon or gives out free with any purchase is perfectly good for this.

A short, such as caused by connecting the wrong wire to ground, can prevent turn-on.
post #5 of 5
Thread Starter 
Quote:
Originally Posted by larymoencurly View Post

Never test a sleeved PSU first with a motherboard. Start by testing it completely disconnected, with a jumper for the Power-On wire, and if you're not sure which is the Power-On wire, don't short anything directly to PSU case ground (because you don't yet know if all the black wires are connected to ground) but instead ground it through a resistor rated for approximately 200-300 ohms, to limit the current to a safe value if you ground the wrong pin. If you don't have the pinout, take a working PSU and measure it while it's running.

Forget PSU testers, and get a voltage meter. The one Harbor Freight often sells for $3 w/ coupon or gives out free with any purchase is perfectly good for this.

A short, such as caused by connecting the wrong wire to ground, can prevent turn-on.

Finally got some time to mess with it. I did exactly what you said and got it to work great! I had two wires in the wrong place! Woops! Everything is good now though!

Thank you very much for helping me out!

Matt
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