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TY-147 buzzing noise?

post #1 of 16
Thread Starter 
Hi guys,

my newly bought TY-147 after some testing seems to have a buzzing noise which I can hear when I approach it.

I tried to record it with my phone:



^ I think you can hear it best at 00:14 when the camera is in front of the blades.
What do you think? Should I return it for a replacement?

Thanks in advance smile.gif
Edited by adridu59 - 3/15/13 at 2:07pm
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post #2 of 16
Thread Starter 
Le bump. (<-- no one says that in France, I guess it's a canadian thing biggrin.gif)

Added Youtube video for convenience.
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post #3 of 16
I've never used a 147, but I've had no such issue with the lovely TY-141. The 141's blades are shaped a bit differently, if my eyes aren't fooling me. The 147's blades seem a bit more aggressive, more sharply tapered, which could maybe contribute to the issue (wild guess). All I know is my TY-141s are buttery smooth and free of parastitic noises below 1k. Then again it could just be a bearing issue. Photo comparison below..
Warning: Spoiler! (Click to show)

vs
Warning: Spoiler! (Click to show)
    
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post #4 of 16
Thread Starter 
Thank you! Maybe I should look for input from a TY-140 owner since they're the same..
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post #5 of 16
I don't hear anything in your video but I am using a laptop. I personally don't have any TY-147 fans. Only TY-140's and TY-143's. I find the TY-143 has a different idle sound than TY-140 which I assume is because of the different in bearings. As speed is increased the fan/air noise becomes louder.

How close do you need to get to the fan to hear it?

Otterclock,
The blades on TY-140/143/147 are different design than TY-141/145/150. No idea why Thermanlright redesigned the blade shape but do know that they used the TY-140 design on TY-143 because it is stronger. I assume the TY-147 has same design as TY-140 because it is same motor and bearing. TY-141/143/145/140 are ball bearings. TY-140/147 are Enhanced Hyper-Flow Bearing (EHFB).
post #6 of 16
Thread Starter 
Quote:
Originally Posted by doyll View Post

I don't hear anything in your video but I am using a laptop. I personally don't have any TY-147 fans. Only TY-140's and TY-143's. I find the TY-143 has a different idle sound than TY-140 which I assume is because of the different in bearings. As speed is increased the fan/air noise becomes louder.

How close do you need to get to the fan to hear it?

Yeah you have to raise your volume quite a lot to hear it because I recorded it with my mobile phone which isn't the most convenient way.. wink.gif

Maybe from 10~15cm I can start hearing it, it's not really annoying but I'm just wondering if there's something wrong with the motor.
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post #7 of 16
I cranked the speakers full volume and still couldn't hear it. Sorry.
10-15cm is very close! Sure hope you don't have long hair, because it would be sucked into the fan! wink.gif
Could it be a 50hz buzz from power?
I don't think it's anything to worry about.
post #8 of 16
Thread Starter 
Quote:
Originally Posted by doyll View Post

I cranked the speakers full volume and still couldn't hear it. Sorry.
10-15cm is very close! Sure hope you don't have long hair, because it would be sucked into the fan! wink.gif
Could it be a 50hz buzz from power?
I don't think it's anything to worry about.

Ahah!
Yea I think it's 50Hz but it sounds more like a motor noise than a hum noise;
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post #9 of 16
This motor noise; does it change as rpm changes?
You are running the fans on PWM.. not voltage control?
post #10 of 16
Thread Starter 
Quote:
Originally Posted by doyll View Post

This motor noise; does it change as rpm changes?
You are running the fans on PWM.. not voltage control?

I was running it at plain 12V when I was testing it, it was running off a Molex to 3-pins adapter connected to the PSU.

I did also plug it to the SYS_FAN2 header at first which is regulated (was 1000~1100RPM's I think), and it didn't have that noise.
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