I have successfully replaced the fan in my Corsair TX750

S

skadebo

[H]ard|Gawd
Joined
Feb 27, 2005
Messages
1,126
Just putting this out there for the record, because I couldn't find any solid info on this.

My TX750, like many others though not all, had a relatively noisy fan. Googling I came up with the following reports:
1. The stock yate loon has a very low starting voltage, so replacement fans may not work as they won't start spinning.
2. Unplugging the stock yate loon (and connecting the replacement fan to an exterior connection) will be sensed by the power supply and it won't allow boot.

I threw caution to the wind and bought an Antec 140mm truequiet.

1. After modifying the Antec's connector to plug into the power supply, I found that it indeed would not start to spin.
2. The power supply did actually allow boot without any fan plugged in.

Solution:
I routed the Antec fan's wires out of the power supply and connected it via molex. Works like a charm. Airflow is less than the stock yate loon, but the air coming out of the power supply is fairly cool. Oh and my PC is awesomely quiet now!
 
I have just modded my psu fans, typically I just wire them to 12v in the PSU, so much easier.
 
I find this unplugging and sensing little hard to believe.
How would they do this? They would need some battery or something...
 
Zero82z said:
What? I see words in your post, but they don't make any sense.
Click to expand...

I think he is saying is that the PSU would require a battery for the abillity to sense that it has no fan. IDK just a guess on my part.
 
Zero82z said:
What? I see words in your post, but they don't make any sense.
Click to expand...

To cut to the chase, its total and utter bullshit that it sense disconnection of the fan.
google reviews there are dozens of photos with disconnected fan. Do you think that after reassembling those PSUs didn't work?

My point with the battery was that it would be hard to sense such a thing...
 
Last edited:
No, it is not hard at all to sense whether or not a fan is disconnected. There are many different ways to implement a feature like that both easily and inexpensively.
 
Zero82z said:
No, it is not hard at all to sense whether or not a fan is disconnected. There are many different ways to implement a feature like that both easily and inexpensively.
Click to expand...

I think he is extremely confused. From his last post it seems like is under the impression that if the fan is EVER unplugged the PSU will never work again. :confused:
 
There is absolutely no need to use an external connection for the fan. True, the fan will not start spinning immediately after power-up but it WILL start up within a few minutes as the PSU heats up. But whatever floats whoever's boats.

The fan in my TX750 actually just totally died this past weekend - almost spectacularly so as I came home to a room full of 'hot electronics' smell. Needless to say a RMA is being arranged...

Which leads me to wonder why in the holy hell the OP is replacing the fan and voiding his warranty. There isn't a TX750 around that has an expired warranty yet, unless someone has voided it by doing something stupid like the above.

Yeah, this is [H]ard|OCP, but not stupidOCP. Arrange an RMA, have the unit professionally serviced by the team at Corsair, and hopefully you will enjoy another 5 years of use out of the thing.
 
Blue Falcon said:
Yeah, this is [H]ard|OCP, but not stupidOCP. Arrange an RMA, have the unit professionally serviced by the team at Corsair, and hopefully you will enjoy another 5 years of use out of the thing.
Click to expand...
It's a little late for that.
 
Blue Falcon said:
There is absolutely no need to use an external connection for the fan. True, the fan will not start spinning immediately after power-up but it WILL start up within a few minutes as the PSU heats up. But whatever floats whoever's boats.

The fan in my TX750 actually just totally died this past weekend - almost spectacularly so as I came home to a room full of 'hot electronics' smell. Needless to say a RMA is being arranged...

Which leads me to wonder why in the holy hell the OP is replacing the fan and voiding his warranty. There isn't a TX750 around that has an expired warranty yet, unless someone has voided it by doing something stupid like the above.

Yeah, this is [H]ard|OCP, but not stupidOCP. Arrange an RMA, have the unit professionally serviced by the team at Corsair, and hopefully you will enjoy another 5 years of use out of the thing.
Click to expand...

I have to agree with Falcon on this -.-
 
Blue Falcon said:
There is absolutely no need to use an external connection for the fan. True, the fan will not start spinning immediately after power-up but it WILL start up within a few minutes as the PSU heats up. But whatever floats whoever's boats.

The fan in my TX750 actually just totally died this past weekend - almost spectacularly so as I came home to a room full of 'hot electronics' smell. Needless to say a RMA is being arranged...

Which leads me to wonder why in the holy hell the OP is replacing the fan and voiding his warranty. There isn't a TX750 around that has an expired warranty yet, unless someone has voided it by doing something stupid like the above.

Yeah, this is [H]ard|OCP, but not stupidOCP. Arrange an RMA, have the unit professionally serviced by the team at Corsair, and hopefully you will enjoy another 5 years of use out of the thing.
Click to expand...


I also agree but if im not mistaken he said he wanted it be quiter? What you going to do Arrange a RMA. "This fan is to loud"? Corsair wouldnt know what to think knowing them they would prolly send him a hx or ax psu, Anyways Plus he said he threw caution to the wind so he knows he voided the warrenty soooo? Plus its not entirly stupid he wanted to make it quiter it is his computer he wanted to do it.I dare someone to tell me that i cant do something to my computer when i paided for it. Although i am a little confused why he posted this thread? Bragging rights? Starting a trend? Im not sure. I am not trying to sound like a ass or something just thats kinda harsh although i never did get the point of being a ass on a forum it doesnt do anything expect make people loss respect for those types of people.
 
investinwaffles said:
I think he is extremely confused. From his last post it seems like is under the impression that if the fan is EVER unplugged the PSU will never work again. :confused:
Click to expand...

yeah, somehow "exterior connector" in second point skipped my attention. Why would he do that when he got connector right there... strange
 
Doesn't opening a PSU have a small but very real chance of killing you with voltage shock unless it's been idle and discharged AND unplugged for days? Yeah...fuck that noise.
 
Matrices said:
Doesn't opening a PSU have a small but very real chance of killing you with voltage shock unless it's been idle and discharged AND unplugged for days? Yeah...fuck that noise.
Click to expand...

not unless if they have high power ballasts in them :p
 
DeerDance said:
yeah, somehow "exterior connector" in second point skipped my attention. Why would he do that when he got connector right there... strange
Click to expand...
The PSU's fan control circuit is tuned to work with the specific fan that the PSU comes with, and may not work properly with a different fan. In that case, it's better to connect the replacement fan to an external connection, or attach it directly to one of the outputs on the PSU's secondary side.
Matrices said:
Doesn't opening a PSU have a small but very real chance of killing you with voltage shock unless it's been idle and discharged AND unplugged for days? Yeah...fuck that noise.
Click to expand...
All that matters is whether or not the PSU has been discharged or not. How long the PSU has been idle and/or unplugged for doesn't matter, since discharging the primary capacitors is a very simple and quick process. All you need to do is leave the PSU connected to the computer, unplug it from the wall, flip the power switch on, and push the power button a bunch of times.
 
I just wanted to chime in and say that everything is still working perfectly.


As for your comments and concerns:

Blue Falcon said:
snip
Which leads me to wonder why in the holy hell the OP is replacing the fan and voiding his warranty. There isn't a TX750 around that has an expired warranty yet, unless someone has voided it by doing something stupid like the above.

Yeah, this is [H]ard|OCP, but not stupidOCP. Arrange an RMA, have the unit professionally serviced by the team at Corsair, and hopefully you will enjoy another 5 years of use out of the thing.
Click to expand...

1. I wanted it to be quieter than stock, it was the loudest thing in my PC (though in absolute terms it is on the quiet side).
2. I'm in Canada, RMA would take several weeks at best.
3. I like mucking about.

Aus10 said:
Although i am a little confused why he posted this thread? Bragging rights? Starting a trend? Im not sure. I am not trying to sound like a ass or something just thats kinda harsh although i never did get the point of being a ass on a forum it doesnt do anything expect make people loss respect for those types of people.
Click to expand...

This is really important. The why of it. I couldn't find any information on the feasibility of fan replacement online. I only found speculation on whether it would work or not. So as I said in my original post, this is here as a record of my findings and experience so that the next person that googles "tx750 fan replacement" or some such can find this thread.
 
Matrices said:
Doesn't opening a PSU have a small but very real chance of killing you with voltage shock unless it's been idle and discharged AND unplugged for days? Yeah...fuck that noise.
Click to expand...
I've seen this claim many times on the internet but i've never seen any actual hard evidence to back it up and IMO it doesn't make sense. Yes there are capacitors on the primary side but given how a PC PSU works I can't see them holding any significant charge for very long.

The place you have to be really careful of capacitors is in high voltage but low current circuitry like that found in a CRT.
 
plugwash said:
I've seen this claim many times on the internet but i've never seen any actual hard evidence to back it up and IMO it doesn't make sense. Yes there are capacitors on the primary side but given how a PC PSU works I can't see them holding any significant charge for very long.

The place you have to be really careful of capacitors is in high voltage but low current circuitry like that found in a CRT.
Click to expand...

A cap inside your PSU isn't going to charge to 120V+ anyways. The capacitance values are pretty small too. Not too much wattage is going to go through you if you short one out.
 
skadebo said:
Just putting this out there for the record, because I couldn't find any solid info on this.

My TX750, like many others though not all, had a relatively noisy fan. Googling I came up with the following reports:
1. The stock yate loon has a very low starting voltage, so replacement fans may not work as they won't start spinning.
2. Unplugging the stock yate loon (and connecting the replacement fan to an exterior connection) will be sensed by the power supply and it won't allow boot.

I threw caution to the wind and bought an Antec 140mm truequiet.

1. After modifying the Antec's connector to plug into the power supply, I found that it indeed would not start to spin.
2. The power supply did actually allow boot without any fan plugged in.

Solution:
I routed the Antec fan's wires out of the power supply and connected it via molex. Works like a charm. Airflow is less than the stock yate loon, but the air coming out of the power supply is fairly cool. Oh and my PC is awesomely quiet now!
Click to expand...

Thanks for the great tip. My PSU fan started making a lot of noise over a week ago. I could have sent my Corsair TX750 in for warranty repair which would have cost me about $20 to ship it back and about 3 weeks of down time waiting for the returned unit. But...$8 and change with free shipping to get an Antec 140mm Truequiet fan 5 days later I replaced my PSU fan and it is dead quiet. So happy I did this. Thanks again for the tip. I do a lot of interviews and I didn't realize how much noise my PSU was generating even before the increased noise from a failing fan. I can't even hear the fan from inches away. Now I am gong to replace my case fan as well with one of these fans because the silicone gromets reduce the nose even more.
 
Bumping a 6-year-old thread... how dare you, lol!

That said, my 750 is still going strong after almost 9 years of constant up-time. I have two of them actually, but only one is on nearly 24x7 running my ESX server.
 
You must log in or register to reply here.
Back
Top