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Power Supply Troubles - Please Help

post #1 of 3
Thread Starter 
Well firstly, the other I day I was browsing the internet and my PC died on me, the displays turned off and the fans etc continued to run. I powered off the PC by holding in the power button, then tried to turn it back on and it was completely dead. My initial thought was that the OCZ Fatal1ty 550W was dead, then I tried a crappy, spare, "no-name" 500W PSU, without my graphics card plugged in and the CPU fan turned on!

I replaced my PSU with a Seasonic X-Series 760W which I received today, plugged everything in, and got absolutely no response.

I've tried to troubleshoot by unplugging each peripheral (SSD, graphics card, disk drive, HDD) in turn but again I've had no response. The funny thing is, when I plug in the crappy no-name PSU again to just the motherboard connectors, the CPU fan starts running again!

I'm totally clueless now, don't have a clue where to start or what to do. Is my motherboard dead or not?
Edited by Awness - 10/10/12 at 12:23pm
My system
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1055T Asus Sabertooth 990FX EVGA GTX 570 SC  12GB Kingston HyperX DDR3 1333MHz + Corsair Ven... 
Hard DriveCoolingOSMonitor
Seagate Barracuda 2TB Corsair A50 Windows 7 64-bit HP 19" @ 1440x900 & PB Maestro 23" @ 1080p 
PowerMouse
Seasonic X-760W Thermaltake eSports Black 
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My system
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1055T Asus Sabertooth 990FX EVGA GTX 570 SC  12GB Kingston HyperX DDR3 1333MHz + Corsair Ven... 
Hard DriveCoolingOSMonitor
Seagate Barracuda 2TB Corsair A50 Windows 7 64-bit HP 19" @ 1440x900 & PB Maestro 23" @ 1080p 
PowerMouse
Seasonic X-760W Thermaltake eSports Black 
  hide details  
Reply
post #2 of 3
Check for burn marks on all of the PCBs, specifically near VRMs. Also check for any possible shorts. Try building the PC out of the case and see if that helps.
Lord Hermitvader
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 3570k Gigabyte G1.Sniper M3 Gigabyte Windforce GTX 670 16gb Corsair XMS3 
Hard DriveHard DriveOptical DriveCooling
128gb Crucial M4 Seagate 3TB LG DVD-RW ZEROTherm ZT-10D 
OSMonitorKeyboardPower
Windows 7 Home Premium Dell S2330MX Microsoft Wireless Comfort Keyboard 5000 Thermaltake Toughpower XT TPX-675M 
CaseMouseAudioOther
Silverstone TJ08-E Razer Orochi Creative SoundCore3D HP Card Reader 
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Lord Hermitvader
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 3570k Gigabyte G1.Sniper M3 Gigabyte Windforce GTX 670 16gb Corsair XMS3 
Hard DriveHard DriveOptical DriveCooling
128gb Crucial M4 Seagate 3TB LG DVD-RW ZEROTherm ZT-10D 
OSMonitorKeyboardPower
Windows 7 Home Premium Dell S2330MX Microsoft Wireless Comfort Keyboard 5000 Thermaltake Toughpower XT TPX-675M 
CaseMouseAudioOther
Silverstone TJ08-E Razer Orochi Creative SoundCore3D HP Card Reader 
  hide details  
Reply
post #3 of 3
Thread Starter 
Quote:
Originally Posted by hermitmaster View Post

Check for burn marks on all of the PCBs, specifically near VRMs. Also check for any possible shorts. Try building the PC out of the case and see if that helps.

I thought about the VRMs because my motherboard's are bad especially for overclocking. There doesn't seem to be any burns though assuming that the VRMs are the black squares round the CPU.
My system
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1055T Asus Sabertooth 990FX EVGA GTX 570 SC  12GB Kingston HyperX DDR3 1333MHz + Corsair Ven... 
Hard DriveCoolingOSMonitor
Seagate Barracuda 2TB Corsair A50 Windows 7 64-bit HP 19" @ 1440x900 & PB Maestro 23" @ 1080p 
PowerMouse
Seasonic X-760W Thermaltake eSports Black 
  hide details  
Reply
My system
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1055T Asus Sabertooth 990FX EVGA GTX 570 SC  12GB Kingston HyperX DDR3 1333MHz + Corsair Ven... 
Hard DriveCoolingOSMonitor
Seagate Barracuda 2TB Corsair A50 Windows 7 64-bit HP 19" @ 1440x900 & PB Maestro 23" @ 1080p 
PowerMouse
Seasonic X-760W Thermaltake eSports Black 
  hide details  
Reply
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