Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > Power Supply starts/stops 2x's... then runs...

Power Supply starts/stops 2x's... then runs...

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - Power Supply starts/stops 2x's... then runs...

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mgoblue   11-09-2009 at 07:09:38 PM

I just installed a Coolmax CTI-600 power supply in my PC. When I turn it on the power unit starts for 2 sec, then shuts down, it starts for another 2 sec, then shuts down, then it powers up and works fine.

What is causing this “stutter start up”? My previous power supply was 500W and I did not have this problem. Components in my system are…

- MSI P35 Neo motherboard
- Intel E7300 Core 2 Duo CPU [2.66GHz]
- 8 GB of DDR2 Ram 800Hz
- NVIDIA 8600 GT Video Card 256 MB Ram
- 2 Hard drives… 320 GB and 500 GB
- CD R/RW drive
- DVD R/RW drive
- Floppy drive
- Multi Flash Reader

I'm running Windows Vista Business 64 bit...

Any insight you can give me about this issue, and how to fix it, will be appreciated.

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frozenlead   11-09-2009 at 07:11:00 PM

Does your PSU do the same thing with nothing plugged into it?
(just short the ground and the negative on the 24-pin molex)

Hail to the Victors!

------------------------------ Sager NP5793 | T8100 2.1GHz | 4GB DDR2-667 | 8800mGTX 512MB | 320GB 5400rpm | 1920x1200 17", 24" | Win 7 x64
 Reply to frozenlead
mgoblue   11-09-2009 at 07:14:47 PM

Did not try that but will do so later today... Thanks!

Rough fall for the Victors...

Reply to mgoblue
FlamingGerbil   11-09-2009 at 07:18:03 PM

Eh, isnt it dangerous to start up a PSU with nothing connected?

At least stick a fan on there when you start it up.

Reply to FlamingGerbil
frozenlead   11-09-2009 at 07:21:31 PM

Why would it be dangerous? You do it all the time if you leave any of your AC/DC converters plugged into walls when not in use.

 

Edit: I don't know what's up with the players. They started the season golden. Almost like Forcier ran out of force-juice.


Message edited by frozenlead on 11-09-2009 at 07:22:55 PM
------------------------------ Sager NP5793 | T8100 2.1GHz | 4GB DDR2-667 | 8800mGTX 512MB | 320GB 5400rpm | 1920x1200 17", 24" | Win 7 x64
 Reply to frozenlead
FlamingGerbil   11-09-2009 at 07:26:54 PM

I thought that there was a minimum load to stop a PSU from frying when started up?

Reply to FlamingGerbil
evongugg   11-09-2009 at 08:11:16 PM

I would attach a PSU tester to it.

Reply to evongugg
frozenlead   11-09-2009 at 09:22:58 PM

The power supply supplies load to itself just by being on - it's inefficient at converting AC to DC, and it has the fan and PFC/digital circuitry to power, even if they aren't regulating any current or voltage.

------------------------------ Sager NP5793 | T8100 2.1GHz | 4GB DDR2-667 | 8800mGTX 512MB | 320GB 5400rpm | 1920x1200 17", 24" | Win 7 x64
 Reply to frozenlead
mgoblue   11-12-2009 at 03:44:29 AM

fl... I got a chance to follow up on your suggestion last night and started to disconnect the cd, dvd, fd... then decided to try it with just the mobo and main hdd... it worked fine..

So, I reconnected things one at time and restarted... The last connections I made, the FD, CD, and side door fan resulted in the weird start up... I the CD on a another feed and it's working fine...

Edit: I think the defense has been figured out by other teams and Forcier is a frosh... hard to pull out miracles every game when you're behind...

Thanks for the tip, which I have tucked away for future reference...

Reply to mgoblue
frozenlead   11-12-2009 at 04:35:07 AM

Curious. Is your PSU equipped with multiple 12V rails? Perhaps they were unbalanced, and you were overloading one? It works fine just by moving the optical disc to a different lead?

Idunno. The OSU game will go one of two ways (obviously). Parts of me feels an epic win coming out...but our record shows otherwise.

------------------------------ Sager NP5793 | T8100 2.1GHz | 4GB DDR2-667 | 8800mGTX 512MB | 320GB 5400rpm | 1920x1200 17", 24" | Win 7 x64
 Reply to frozenlead
Bronze CPUs badge jsc   11-13-2009 at 05:22:25 PM

Most inexpensive "multi-railed" PSU's really aren't. If you check all the 12 volt outputs, they are usually tied together.

Reply to jsc
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