Palfrey Posted February 4, 2013 Share Posted February 4, 2013 I recently bought a TX750M power supply, all seemed fine and dandy. Anyway, I put everything together, and it all worked fine, and I've left it on for a few days. However today I noticed that there was a quiet clicking noise coming from the computer, which was audible when the case was shut and the fans were on low. After some investigation I determined it was the PSU fan trying to spin up. I looked at the back of the box, and it does say that it will only spin up if the system load (Watts) goes above 225W. However what I saw online pointed to the fan spinning up on boot of the computer. To test that I restarted the computer multiple times, and it wouldn't spin up at all. I ran Prime95 for two hours or so the other day, and there were no noises then, and the PSU itself doesn't feel particularly hot to the touch after running Prime95 for half an hour. (Not much time I know, but I thought I'd write this and go to sleep.) I'm not currently using a GPU, and only one HDD and SSD. CPU is an i5-3570k, cooled by a PhAntecs PH-TC14PE. Case is a Silverstone Raven RV02-E, with three 180mm fans at the bottom, and one 120mm fan at the top. Motherboard is the Asus P8Z77-V Pro, with one 8GB stick of Corsair low profile Vengeance RAM. Could it just be because the system isn't drawing more than 225W? But that wouldn't explain why the fan doesn't spin up on boot, seeing as that's what other people have said. Have I got a faulty unit, or am I being paranoid? UPDATE: The fan definitely spins, the unit itself isn't hot, and the computer has been on all night downloading steam games. However when it does spin it only spins for a second, and then stops, and the noise is definitely caused by the fan trying to start and stop in the same second. Oh, and why does it keep correcting (sans hyphons) P-h-a-n-t-e-k-s to PhAntecs? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 5, 2013 Corsair Employees Share Posted February 5, 2013 Could it just be because the system isn't drawing more than 225W? But that wouldn't explain why the fan doesn't spin up on boot, seeing as that's what other people have said. The fan not spinning even under P95 sounds normal, you would need more than that to pull more power. Keep in mind that it is not only load that triggers the fan, it is a combination of the both load and temp. Fan not running on boot is somehow odd. Is the system coming from a cold boot? Link to comment Share on other sites More sharing options...
Palfrey Posted February 5, 2013 Author Share Posted February 5, 2013 The fan not spinning even under P95 sounds normal, you would need more than that to pull more power. Keep in mind that it is not only load that triggers the fan, it is a combination of the both load and temp. Fan not running on boot is somehow odd. Is the system coming from a cold boot? I removed the PSU from the case itself and filmed a cold boot. (I presume by cold boot you mean shut-down, then turn on again?) As you can see the fan doesn't spin at all. But the rest of the system boots up correctly, and runs perfectly fine. Video here: http://www.youtube.com/watch?v=y_5DxORriyQ If necessary I can remove the PSU from the case again and see if I can catch the fan trying to spin/spinning on film. The odd thing is, I have seen the PSU fan spin, albeit not for long enough for me to record it. Link to comment Share on other sites More sharing options...
MacNB Posted February 5, 2013 Share Posted February 5, 2013 I have exactly the same issue. I have the non-modular version (TX750 V2). Posted video in a new thread. Link to comment Share on other sites More sharing options...
Palfrey Posted February 5, 2013 Author Share Posted February 5, 2013 I have exactly the same issue. I have the non-modular version (TX750 V2). Posted video in a new thread. Never mind, I found it. Nice to know it's not just me having this issue. Strange that it happened to a TX750M and a TX750 though. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 5, 2013 Corsair Employees Share Posted February 5, 2013 The fan should spin at start up as a self test I would suggest setting system up and put a load on the graphics and CPU by running like Prime 95 to load the CPU and run Furrmark to load the graphics card and you should see the fan spin up every few minutes if it does then it is working and I would not worry about it. If the fan does not come on say in 15-20 Min then please use the link on the left and request an RMA and we can replace it. Link to comment Share on other sites More sharing options...
Palfrey Posted February 5, 2013 Author Share Posted February 5, 2013 The fan should spin at start up as a self test I would suggest setting system up and put a load on the graphics and CPU by running like Prime 95 to load the CPU and run Furrmark to load the graphics card and you should see the fan spin up every few minutes if it does then it is working and I would not worry about it. If the fan does not come on say in 15-20 Min then please use the link on the left and request an RMA and we can replace it. I don't actually have a GPU, and I can't borrow one. Is there anything else I can do to load the system? I'll do a P95 run now, and see if I can see the fan spinning up. I bought it from Amazon, so I presume I'd have to arrange the RMA through them? Thanks for the help though, much appreciated. Link to comment Share on other sites More sharing options...
MacNB Posted February 6, 2013 Share Posted February 6, 2013 I don't actually have a GPU, and I can't borrow one. Is there anything else I can do to load the system? I'll do a P95 run now, and see if I can see the fan spinning up. I too only have the HD4000 built-in GPU. On my system, I noticed that during heavy disk activity (e.g. disk to disk copy), I see the stuttering/buzzing. During Prime95 runs, the fan does turn on every now and then (as RAMGUY suggested it should). But it definitely does not turn on at power-up. Link to comment Share on other sites More sharing options...
Palfrey Posted February 6, 2013 Author Share Posted February 6, 2013 I too only have the HD4000 built-in GPU. On my system, I noticed that during heavy disk activity (e.g. disk to disk copy), I see the stuttering/buzzing. During Prime95 runs, the fan does turn on every now and then (as RAMGUY suggested it should). But it definitely does not turn on at power-up. I find it strange that it affects both of us, and we have similar models, only difference is mine's modular. Link to comment Share on other sites More sharing options...
Nickjf20 Posted February 7, 2013 Share Posted February 7, 2013 I've just received a replacement TX750M for this very reason and it's making the same buzzing noise ... I really don't want to get a fourth just for the same problem to crop up again. Neither of the fans turn on boot Link to comment Share on other sites More sharing options...
Palfrey Posted February 8, 2013 Author Share Posted February 8, 2013 I arranged for an RMA through Amazon, thanks for all the help though guys. Link to comment Share on other sites More sharing options...
Palfrey Posted February 11, 2013 Author Share Posted February 11, 2013 Just received the replacement, and the same problem crops up, fan doesn't spin on boot. It tries to occasionally, yet nothing happens. However, one of my friends has just bought one from a different store, and he did the paperclip test on his, and again, the fan didn't start. I'm starting to think that this is because of the fan not coming on unless there's more than 225w of load, and when my system starts/I do the paperclip test, there's not enough load to cause the fan to turn on. It can't happen to three different PSUs, one of which was from a different store to the others can it? Update: One of my friends has agreed to lend me his GPU (GTX680) to test if it's a load problem, we're going to test the one I got to replace the old one and the old one. We'll start by testing for spin up on boot, if that doesn't happen, we'll swap PSUs and test again. If it fails the test both times, we'll run P95 and Furmark simultaneously. Failing that, then I'm stuck for ideas, aside from getting a refund and either switching brand or getting an AX Series with a little extra money. Link to comment Share on other sites More sharing options...
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