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3 Secondary PSU's Dead

post #1 of 4
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I have been running a 2 psu system for a little over a year now, but lately I have been experiencing some problems. My Primary is a 550W Antec. I have all my computer components (CPU, GPU, hard drives, etc.) on it. My Laing Pump and 5 fans are powered by my secondary PSU. My first 2nd PSU was the no name brand that came with my case, 350W. It worked fine until Christmas time (6 months) when it would not turn on any more. I have been at college so there has been little time to tinker. I put in a used one my friend gave me (a Newton Company Ltd. 200W). It worked when I tested it, but the minute I spliced the wires together, connected the fans and pump, and turned it on, it died. Nothing I did would get it to work again. I didn't have time to put in another one. I just got back from school and have had a chance to put another one in (Dell 200W). This one worked in my system for about half a day. It abruptly sputtered to a halt.

Should I be using a more powerful psu for 5 fans and a pump or have i just had bad luck?
true love
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CPUMotherboardGraphicsRAM
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PowerMouse
Generic 550W+Antec 500W Logitech mx 700 
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true love
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CPUMotherboardGraphicsRAM
Conroe e6300 OC 3.23 ghz Asus P5B nVidia 7950 gt ko 512mb 579/1710 mhz OCZ Gold DDR2 800 512mbx2 + 1gbx2 
Hard DriveOSMonitorKeyboard
WD 160GB SATA x2 Windows XP SP2 Sony 19" Logitech 
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Generic 550W+Antec 500W Logitech mx 700 
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post #2 of 4
Cross loading. You need to place some type of load on the 3.3+5v rails. You just need something like 1A. The fans and pumps only run off the +12v rail.
Once again...
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Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
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Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
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Once again...
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i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
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post #3 of 4
Yup, crossloading plus crappy psus isn't a recipe for success. Next time, use a fan modded to 5V or a hard drive or two and it'll be nicer on the psu. Also, why are you using 2 psus? Depending on which Antec it is, it should be able to run your system with out the helper psu. If you do need a more power, either get a single psu that is big enough or when you do get another little helper, make sure it is a decent one.
Edited by shinji2k - 5/17/08 at 1:37am
i7 monsta
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i7 monsta
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i7 920 [4.2GHz] [1.325V] ASUS P6T Deluxe V2 2x XFX 5870 [1000/1250] G.Skill 3x2GB 1600MHz 
Hard DriveOSMonitorKeyboard
X25-M 80GB, 320GB WD Scorpio Black Vista x64 2007FP-3007WFP-2007FP-1080p 32" OCN Ducky Brown 
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Silverstone ST85F-P whiteOut G9 
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post #4 of 4
Yeah... you can't put JUST a +12V load on a PSU like that. You will kill the PSU.
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