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PC does not turn on


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#1
Fredypublic

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Hi every one!

I'm trying to fix a Dell Dimension 4600C. This PC turns on whenever feels like it.
I unplug the power cord and the light on the mobo stays on for about 10 sec which makes me think the PSU might be bad, but I don't have a another one so I can't test it . I removed the battery and nothing. I removed all the devices (CDROM, HD, etc) leaving just the mobo connected and nothing. Like I said, sometimes works... sometimes it does not.

"I unplug the power cord and the light on the mobo stays on for about 10 sec". I know this is not normal..... :-(

Thank you for your help guys!
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#2
Gnomad1600

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"I unplug the power cord and the light on the mobo stays on for about 10 sec". I know this is not normal..... :-(

Yes, that is normal, there is always a little bit of power left after you unplug it that needs to bleed off, then the light will go out.
When it doesn't start up what happens? Do any fans come on? Any lights? Does anything happen at all?
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#3
Fredypublic

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When I plug the power cord, the processor fan spins for about 2 sec, the PSU does not even move, light on mobo goes on and that's it. by the way, there's not switch on the PSU, only at the front of the computer.
Yesterday, -after I posted this question- I unplugged everything in the PC, and bridged pin 13 and 14 of the 20 pins connector, firts time worked, but that was it, it never worked again until today early in the morning, once again only the first time worked.

Thank you for your time and help!
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#4
SHENGTON

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Kindly post the complete specs of your rig. let see what we can do after you post it.

Thanks and God bless. :)
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#5
Fredypublic

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OS Name: Microsoft Windows XP Home Edition
Version:5.1.2600 Service Pack 1 Build 2600
System Manufacturer: Dell Computer Corporation
System Model:Dimension 4600C
System Type:X86-based PC
Processor x86 Family 15 Model 3 Stepping 4 GenuineIntel ~2792 Mhz
BIOS Version/Date Dell Computer Corporation A07, 5/17/2004
SMBIOS Version 2.3
Hardware Abstraction Layer Version = "5.1.2600.1106 (xpsp1.020828-1920)"
Total Physical Memory 512.00 MB
Available Physical Memory 171.31 MB
Total Virtual Memory 1.72 GB
Available Virtual Memory 1.03 GB
Page File Space 1.22 GB

PSU: Dell Model HP-L161NF3P 160W

I hope this is useful.... let me know if you need more info....
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#6
123Runner

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and bridged pin 13 and 14 of the 20 pins connector


This leads me to believe the PSU. Pin 13 is com and 14 is PS/on.
The power supply should turn on every time.
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#7
Fredypublic

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In other words.... you're telling me that the PSU is the problem and should be replaced?
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