Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > Is my new PSU DOA?
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nkarasch   01-04-2008 at 03:15:39 AM

I have an Antec Neopower 650 Blue and when I plug it in and flip the switch nothing happens. I tried connecting it to fans and even an old mobo and flipped the switch and get nothing. The blue light and fan dont come on and nothing happens. Is it dead?

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nukemaster   01-04-2008 at 03:49:48 AM
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you have to flick the switch and hit the power on the motherboard.....ATX PSU's do not go on from the switch(back) alone....

There is a way to hotwire them, but in this case i see no need to...

------------------------------ http://i33.tinypic.com/sw3a5y.png
http://tinyurl.com/26uxxb - C2/i7 Temp? http://tinyurl.com/cj3pw - VGA power?
http://tinyurl.com/5v55wk - C2 Mem performance? http://tinyurl.com/6pmbke - SLI/Xfire?
http://tinyurl.com/yfmxdc9 - Part Guide?
 Reply to nukemaster
nkarasch   01-04-2008 at 03:54:35 AM
- 0 +

Hit the power on the motherboard? Huh?

So I need to plug the 24 pin connector into the mobo and turn the power on on the motherboard? What do I look for? I dont haev the manual for this board anymore its an old junker. Are you taklinga bout hooking the wire up to the motherboard that is connected to the switch on the front of the case?

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nukemaster   01-04-2008 at 03:59:37 AM
- 0 +

yes, you connect the PSU to the board(and turn its switch on) and short the PW_SW(or similar) on the board.

What is this PSU for? a new system or this old junker? Some old boards may not work with new psu's.

I tried to fire up a celeron 266(Now thats old junk :) ) with a new psu and it would go on but not post. a cheap psu worked fine....something to do with the -5 and -12 not being on all new psu's or something...


Message edited by nukemaster on 01-04-2008 at 04:01:24 AM
------------------------------ http://i33.tinypic.com/sw3a5y.png
http://tinyurl.com/26uxxb - C2/i7 Temp? http://tinyurl.com/cj3pw - VGA power?
http://tinyurl.com/5v55wk - C2 Mem performance? http://tinyurl.com/6pmbke - SLI/Xfire?
http://tinyurl.com/yfmxdc9 - Part Guide?
 Reply to nukemaster
nkarasch   01-04-2008 at 05:07:23 AM
- 0 +

Well this is for my new system, Im holding off buying my mobo and processor until Yorkfield comes out just to see what is in my sweet spot now $250-300. I will most likely go with the Q6600 if the new Yorkfields require DDR3.

I tried it on I believe a Socket 754 mobo...is that an Athlon XP socket? I think so...either way it is probably about 4 years old. It seems like it would be compatible.

Reply to nkarasch
nukemaster   01-04-2008 at 06:39:14 AM
- 0 +

754 is A64....the first ones. and that would work.....so would Socket A(XP)

Did it run?

------------------------------ http://i33.tinypic.com/sw3a5y.png
http://tinyurl.com/26uxxb - C2/i7 Temp? http://tinyurl.com/cj3pw - VGA power?
http://tinyurl.com/5v55wk - C2 Mem performance? http://tinyurl.com/6pmbke - SLI/Xfire?
http://tinyurl.com/yfmxdc9 - Part Guide?
 Reply to nukemaster
bob8701   01-07-2008 at 05:15:25 PM
- 0 +

shorted green pin to black pin( 24pin connector) with a piece of bare wire , it will turn on the power supply without motherboard.

Reply to bob8701
nukemaster   01-07-2008 at 07:33:12 PM
- 0 +

The only reason i did not suggest hotwiring in this case is that some PSU's have a minimum load they need to run so they will just shut off....that would make the PSU look dead when its not.....

------------------------------ http://i33.tinypic.com/sw3a5y.png
http://tinyurl.com/26uxxb - C2/i7 Temp? http://tinyurl.com/cj3pw - VGA power?
http://tinyurl.com/5v55wk - C2 Mem performance? http://tinyurl.com/6pmbke - SLI/Xfire?
http://tinyurl.com/yfmxdc9 - Part Guide?
 Reply to nukemaster
bob8701   01-08-2008 at 07:02:46 PM
- 0 +

so you could use DMM to check 12 volts as load, fan or hard drive can be the load too. the DMM will be best choice since measure the voltage reading.


Message edited by bob8701 on 01-08-2008 at 07:07:28 PM
Reply to bob8701
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