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 Post subject: PSU replacement
 Post Posted: Sat Dec 02, 2017 7:18 pm 
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Thinking of getting a PSU replacement for my Wife's old pc. It has a Corsair cx430 in it currently. She's had a problem recently where it blue-screened and restarted. Blue screen error was related to the video drive. I updated the driver. However I looked in event view and there was a different problem that was labeled as "warning" related to the "Amd northbridge". Cleared all dust out of pc. Re-seated the graphics card. Looked for bulges in the capacitors, but have not seen any. I'll get the details on the warning from event viewer when I can.

Anyway, the PSU is so old I can't even find where I purchased it in any of my online accounts. So I'm thinking of just getting a new one.

I was looking at this Seasonic which looks pretty nice. What do you think?.


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 Post subject: Re: PSU replacement
 Post Posted: Sat Dec 02, 2017 10:49 pm 
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I wouldn't replace a power supply unless the existing one failed, and I'm not sure that is what happened here. Scott.


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 Post subject: Re: PSU replacement
 Post Posted: Sun Dec 03, 2017 12:58 pm 
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Well I could always replace it and have the one in there now for a "known good spare". She hasn't had any problems with any blue screens since I uninstalled and reinstalled the video driver. I could wait and see if there are any other problems of course but I do like to have new parts. For instance with HDD, when HDD were more popular than SSD, I believe you recommended to replace them every so many years instead of waiting till they failed. This is how I'm leaning with the PSU of this pc. I'm guessing with HDD that recommendation is just to prevent data loss. The PC in question is pretty old but still works fine for what she uses it for. Just browsing the internet and some silly games. Also once in a while she is allowed by her job to work from home and uses SingleComm to take calls for a call center.


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 Post subject: Re: PSU replacement
 Post Posted: Sat Apr 21, 2018 10:42 pm 
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Well I did end up replacing it anyway. My New PSU I have questions about though. Shouldn't I be able to feel the air exhaust out of the back of the PSU?. I don't. Absolutely nothing at all. The old Power Supply I could feel air exhaust out the back of it. I don't think I've ever had a power supply where I could not feel air coming out from the back of it.


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 Post subject: Re: PSU replacement
 Post Posted: Sat Apr 21, 2018 11:40 pm 
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I contacted Seasonic about it and they say as long as the fan spins than there is nothing wrong with power supply. Another question I had on mounting I looked up...I always thought that the power supply fan, it's function was to help cool the pc somewhat. Most of what I've read online says the same thing. You always face the power supply fan towards the motherboard because it draws or sucks hot air out of the system thought the power supply and out the back of the system. The guy from Seasonic is telling me that the only reason that you would point the power supply fan at the motherboard is that you don't have vents in the other directions. In other words the only function of the Power Supply fan is to cool the power supply. The fan should face up or down depending on where you have a vent on the case, so the fan can draw cooler air from outside the case into the power supply to cool it.

What do think about this Scott?. If this is true could write more about it in the next book?. I've not been able to find anything that says anything close to what the guy from Seasonic is saying to me.


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 Post subject: Re: PSU replacement
 Post Posted: Sun Apr 22, 2018 1:01 pm 
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Many systems don't have chassis fans and as such do rely on the PSU fan to cool the chassis as well as the PSU. It doesn't matter where the PSU fan is physically "pointed" as long as it is installed with the airflow in the direction that the case is negatively pressured, that is the air should be entering the PSU from inside the chassis and flowing out the external vents in the PSU.

I previously had much more information on system cooling in the chapter on overclocking and cooling that was included in the 16th through 18th editions. Unfortunately due to new material and the inability to add to the page count it was removed from the 19th and later editions.

For more information I highly recommend reading the detailed documents on chassis thermal design published by Intel, here are a few of them:

http://www.formfactors.org/developer/sp ... tds_10.pdf
https://web.archive.org/web/20120519074 ... _62086.pdf
https://www.intel.com/content/dam/suppo ... -guide.pdf


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 Post subject: Re: PSU replacement
 Post Posted: Sun Apr 22, 2018 1:26 pm 
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That is what I always thought Scott- That you were meant to point the power supply fan towards the motherboard and as such it would draw the hot air out of the case into the power supply and out the back vents of the power supply.

What the guy said to me through email was that if you have a case with a vent on the bottom of it you should have the power supply fan pointed towards the vent so it will draw cool air from the outside of the case and into the power supply. He said it's not efficient to have it drawing in hot air from inside the case because that will just make the power supply hotter. He was indicating that the sole function of the power supply fan is to cool down the power supply and has nothing to do with cooling the pc.


I don't think I can tell you word for word what he said though but maybe just this part I can quote,

Quote:
This email may contain information which is privileged and confidential and intended solely for the person or organization to which it is addressed. If you are not the intended recipient, you must not copy, distribute or disseminate the information or take any action in reliance of it. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of Seasonic Electronics Co., Ltd. and its affiliates. If you have received this message in error, do not open any attachment but please notify the sender (above) and delete this message from your system. Please rely on your own virus scanner; no responsibility is taken by the sender for any damage.


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 Post subject: Re: PSU replacement
 Post Posted: Sun Apr 22, 2018 6:03 pm 
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The question still remains, Shouldn't I be able to feel air blowing out of the back of the power supply regardless of the speed of the fan?. In my mind I would think some kind of force or wind should be perceptible.


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 Post subject: Re: PSU replacement
 Post Posted: Tue Apr 24, 2018 7:42 pm 
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I can't comment on "feel". If the fan is spinning then either the air is going in or out and it should be going out! Scott.


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 Post subject: Re: PSU replacement
 Post Posted: Tue Apr 24, 2018 9:21 pm 
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Right, that's why I'm a bit concerned. The air has to be going somewhere. If it's being sucked in by the fan and doesn't come out the back, it could be just because of poor design or something isn't right with the fan. Kind of want to get a different brand and return this. Then again it could be the fan only spins when the pc is first started up for awhile and then goes off during normal operation. It speeds up, slows down, or goes off completely based on "load" and PSU temp. The only reason I know it is or was spinning is because I took the side panel off and started it up on my kitchen table to check if it was actually spinning.

I saw in your book that Seasonic is one of the brands you do recommend. Guess I'll just let it be for now.


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 Post subject: Re: PSU replacement
 Post Posted: Thu May 03, 2018 5:36 pm 
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Well I went to put in my new "refurbished" Pc power & cooling PSU and noticed the 20 pin part of the power connector is broken it seems. More negatives for pc power and cooling

Image


Image

Noticed this AFTER I secured it all in the case. Kind of a pain in the butt putting it in with this case. They said they would ship me out another one tomorrow. Hope that one isn't broken also. Maybe I'll get a Corsair at this point.


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 Post subject: Re: PSU replacement
 Post Posted: Thu May 03, 2018 5:40 pm 
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I mean it might still technically "work" but the one I sent them in was less than a year old and didn't have any issues like that. Should I trust it and connect everything up and try it out?. I don't think I should. What do you think Scott?. Kind of makes me wonder about these guys and weather or not they are trustworthy anymore. I called and they said they would ship another out tomorrow but no apology or anything....


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 Post subject: Re: PSU replacement
 Post Posted: Thu May 03, 2018 7:32 pm 
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The pictures don't show anything clearly. Let me know what you decide in the end. Scott.


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 Post subject: Re: PSU replacement
 Post Posted: Thu May 03, 2018 7:47 pm 
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I can see them pretty clearly. Did you click on each picture to enlarge them? I'm holding the 20 pin connector in between my thumb and index finger. There is a break or hole on the side of the connector.


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 Post subject: Re: PSU replacement
 Post Posted: Fri May 04, 2018 6:30 pm 
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I believe the "break" or "hole" you speak of is an attachment point for the 4-pin connector to combine the 20 and 4-pin connectors to make a modern 24-pin connector. Unfortunately the pictures are not clear or close enough to accurately say anything more than that. Scott.


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 Post subject: Re: PSU replacement
 Post Posted: Fri May 04, 2018 6:36 pm 
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I guess I'll have to get a better camera, or learn to take better pictures. There is definitely a hole where there should not be one. Either way, they are shipping another PSU and it went out today. To connect the extra 4 pins there are little "nubs" on each side of the 4 pin connector that just slide under the little plastic edges on the 20 pin connector. The "hole" that I'm describing you should be able to see if you look at the red wire or wires where they go into the plastic connector.


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 Post subject: Re: PSU replacement
 Post Posted: Fri May 04, 2018 6:44 pm 
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I think I'll try and take some better pictures when I get the new one to compare.


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 Post subject: Re: PSU replacement
 Post Posted: Fri May 11, 2018 3:37 pm 
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Well I received the replacement for the replacement psu today. Same crappy packaging, surprised I can't see any physical damage(yet). Another supply with a "Refurbished" sticker on the outside. After originally shipping them back a less than 1 year old PSU that I had to pay the shipping on they ship me back this thing that I'm suppose to trust will be ok?. I am not gonna be using PC Power & Cooling anymore. They may have been great a long time ago but today I think it's a different story. Corsair I would say is the best currently based on my recent experience. Seasonic being a close second place. I'm guessing PC Power & Cooling went downhill when "Firepower technology" took over the company. I guess they aren't popular anymore for good reason. When was the last time they even released a new model of any or their power supplies?.

The way they packed it was they put the power supply in a box that was roughly the same size as the power supply itself. They also put a plastic bag over the body of the power supply but left the cables that are permanently connected out of it. There was a small single layer of bubble wrap partially covering the body of the power supply.

I'm not new to shipping. Anyone with half a brain can figure out that they way they packed it was/is not sufficient. Usps, Fedex, UPS or any other shipping company will not treat most packages with respect. Packages get thrown around constantly. They are exposed to cold, heat, rain, snow, mud....So using such poor packing isn't going to cut it. I have no idea what my package went through to get to me and have no clue about the "refurbished" power supply or it's history. With such little packing it's more than likely it's been damaged in some way, shape or form. Even though I can't see any physical damage, doesn't mean it's not damaged.

Honestly Scott, would you use it without any hesitancy?.


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 Post subject: Re: PSU replacement
 Post Posted: Fri May 11, 2018 11:00 pm 
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I guess I could use it for testing dead systems or something like that. There is no way I'm going to rely on it to power my pc though. Gonna have to find something from either Corsair or Seasonic(what Pc Power & Cooling used to be).


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 Post subject: Re: PSU replacement
 Post Posted: Sat May 12, 2018 10:08 pm 
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I think I'll wait for now. I'll most likely get a CORSAIR RMx Series RM750x (CP-9020179-NA) 750W ATX12V / EPS12V 80 PLUS GOLD Certified Full Modular Power Supply. Corsair beats out Seasonic with their RMA return process by miles. Seasonic, if you read a lot of the reviews has been having trouble with fans on certain models. I also don't really like the stupid "hybrid mode" button on the Seasonic supplies. Just keep it in "hybrid mode" all the time and forget about a button that can just be another problem in the future.

Doing all this reading of reviews of different power supplies over the past few weeks Corsair still stands out as the clear overall winner. Firepower technology(Formerly Pc Power & Cooling) had my initial impression of being really good, but dealing with their RMA process and them shipping me a broken psu for replacement so carelessly packed a fourth grader could do a better job turned me off of them. Well plus the fact that their supply was "bad" or going bad after less than a year of use in a pc that barely needed the power it provided...

Firepower Technology hasn't released any new power supplies in years and I've even read about some of them failing earlier than mine did and taking out the motherboard when they died. They are also way over priced, and I'm guessing it because they are selling on the name "Pc Power & Cooling". A guy on Amazon even got 2 DOA Silencer 750W Mk III in a row.


Last edited by FatGuy on Thu May 17, 2018 8:26 pm, edited 2 times in total.

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 Post subject: Re: PSU replacement
 Post Posted: Wed May 16, 2018 4:53 pm 
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The Mk II line was built by OCZ OEM Sirtec, based on a modification of OCZ's "Z-Series Gold" power supplies.. So the "PC Power & Cooling Silencer 750" wasn't even manufactured by Pc Power & Cooling or Seasonic. The Silencer 910 and 760 however were "re-engineered from a SeaSonic S12D platform, the successor to the older S12 platform used in the original Silencer series.". Read that mine was built by "Super-Flower".


Last edited by FatGuy on Thu May 17, 2018 5:48 pm, edited 1 time in total.

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 Post subject: Re: PSU replacement
 Post Posted: Wed May 16, 2018 4:56 pm 
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Bottom line- The "Pc Power & Cooling 750 MkIII" actually isn't even a technically a "Pc Power & Cooling" power supply. They are selling the name and marking up the price because of the name while selling a much cheaper and lower quality power supply. It's pretty terrible. I mean I didn't do my homework to figure this out until now so I doubt others have either. I purchased it based on reputation of Pc Power & Cooling not thinking about how they aren't the same company anymore. As they say, "You can't polish a turd".

https://www.cnet.com/products/pc-power- ... att/specs/

http://www.marketwired.com/press-releas ... 750055.htm


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 Post subject: Re: PSU replacement
 Post Posted: Thu May 17, 2018 7:55 pm 
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This PSU is around the same price. However it's much newer and has much better reviews.

Compare the Pc Power Cooling/Firepower Silencer 750w MkIII review.

I really got royally ripped off when I purchased this garbage PSU and to add insult to injury the RMA/warranty service was/is pathetic. To be honest this is the only power supply that I've purchased that I have problems with so early.

Actual the Seasonic PRIME Ultra 750W 80+ Titanium Power Supply, Full Modular, 135mm FDB Fan w/Hybrid Fan Control, ATX12V & EPS12V, Power On Self Tester, SSR-750TR is closer in price to the FirePower Technology Silencer 750 mkIII.

A difference of $9.59. So you can clearly see how Firepower Technology is ripping customers off by slapping the "PC power & Cooling" name on a no-name manufactured psu. It's as bad as people selling counterfeit electronics in my opinion. In a way it's the same thing....


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