Power Supply Intermitent issue on Standby CM Silent Pro M 700

Krnt

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Dec 31, 2009
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Hi,

Here are my PC specs:
AMD Phenom II X4 980BE @4.0GHz (Software Overclocked, K10Stat)
2x2Gb Mushkin Redline -12800 @1600 MHz 7-8-7-24
ASUS GTX560 TI DCUII1GB @ 970MHz core, 1090MHz memory
Mainboard ASUS M5A97evo
HDD: Western Digital RE4 1TB
HDD2: Western Digital Green 1.5TB
PSU: Cooler Master Silent Pro M 700
CPU Cooling: Cooler Master Hyper 212+
HD Cooling: Cooler Master 4-in-3 Device Module
Case: Cooler Master Elite 335

My PSU has began to give me problems, but its a weird case because if it manages to start it will run without issue even under heavy loads and overclocking for many days, but the issue only shows up when I unplug it from the wall.

Example, Last night there was a blackout on my area, and my PC was ON at the moment, but it was connected to a 1000 Watts UPS so it didn't turn off, I didn't knew how much time the blackout would last so I shut it down normally and turned off the UPS.

Five minutes later Power was restored but the voltages were a bit high so I decided to wait a little more, with voltages settled I turned up the UPS and tried to turn on my PC but it was dead, completely.

My ASUS Motherboard has a Standby LED which which lets me know when its ready to turn on, but it was off, I suspected about the PSU so I tested it with an underpowered CM GX450 only plugging in the 24-pin connector and the LED turned on.

This weird issue started happening about a year ago but it was very intermittent and difficult to point out, until recently has become quite frequent, so any time I unplug it from the wall or I'm forced to cut out all its power sources Its going to be difficult for it to start again.

When it starts? When it wants, maybe in the next 5 minutes or maybe in a week, I need to keep trying until the Standby led powers on to be able to turn it on.
 
Solution
You should count yourself lucky that you have had so little trouble diagnosing your problem and just buy a new PSU. It's much more trouble than it's worth to try to fix a PSU even if you know what you are doing which most people don't.

ram1009

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You should count yourself lucky that you have had so little trouble diagnosing your problem and just buy a new PSU. It's much more trouble than it's worth to try to fix a PSU even if you know what you are doing which most people don't.
 
Solution

Krnt

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Dec 31, 2009
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18,760
My PC just started a while ago, and is running Crysis right now (I can't get bored of that game), but doing a little research I found that some people said that Seasonic are very good quality PSU's like this one:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088

Even though I was looking for something like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171079
Its Seasonic manufactured too, and both of them are gold certified, I think that would help since I keep my PC on always.

Yeah I'm kind of weak for Cooler Master products, but I think doing my homework this time should help.

EDIT: Whoa! Prices ramped up within a day, maybe it was Newegg's mistake because 159 for the V850 was a bit strange, however now I'm in a little dilema:
This V700:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171080
Or this Silent Pro Gold 800:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171057

First one is manufactured by Seasonic and the second one by Enhance Electronics the same as my old Silent M700, Both of them are 159.00 and are gold efficiency rated, but I'm inclined for the V700 because of its manufacturer, larger fan, aesthetically better looking, better connectivity and nicer quality construction.