Noisy fan : source for replacement ? teranex

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Videobegin

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Noisy fan : source for replacement ? teranex

PostMon Sep 12, 2022 10:47 am

hello,

I have a noisy Teranex AV. Add the fact that fan switches constantly between high and low speed and you may understand the unpleasant situation.

Any source for a new compatible part ?
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fan.jpg
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Last edited by Videobegin on Tue Sep 27, 2022 7:55 am, edited 1 time in total.
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Raphaël Jacquot

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Re: Noisy fan : source for replacement ?

PostMon Sep 12, 2022 6:55 pm

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Videobegin

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Re: Noisy fan : source for replacement ?

PostTue Sep 13, 2022 9:09 am

Interesting : half the price of original and from a brand known for low noise products. ;)

Will buy one to check if same airflow level...
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David_Anderson

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Re: Noisy fan : source for replacement ?

PostTue Sep 13, 2022 4:59 pm

Original fan in BM unit:
http://www.cofan-usa.com/pdf/dc_4020iii.pdf
F-4020H12B III - 8.47CFM (MAX), 27db (MAX)

Unit as proposed above:
https://noctua.at/en/nf-a4x20-pwm/specification
Noctua NF-A4x20 PWM - 15.97CFM (MAX) 14db (MAX)

So it produces almost twice the airflow and half the noise. I've changed out many of my BM units with these (after warranty expires) and it makes a night and day difference!

Best,

David

Videobegin wrote:Interesting : half the price of original and from a brand known for low noise products. ;)

Will buy one to check if same airflow level...
David Anderson
Leading Edge Multimedia
https://leadingedgemultimedia.com
(888) 336-LEMM
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Videobegin

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Re: Noisy fan : source for replacement ?

PostTue Sep 13, 2022 5:27 pm

Respect !

thanks 8-)
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Videobegin

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Re: Noisy fan : source for replacement ?

PostWed Sep 21, 2022 12:57 pm

Received fan today. Coding color is different.

I'm not sure if BMD follows usual cabling for computers so I ask confirmation before something burn !

black to black
yellow to red
green to yellow
blue to blue

:?:
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Raphaël Jacquot

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Re: Noisy fan : source for replacement ?

PostWed Sep 21, 2022 1:04 pm

David_Anderson wrote:Original fan in BM unit:
http://www.cofan-usa.com/pdf/dc_4020iii.pdf
F-4020H12B III - 8.47CFM (MAX), 27db (MAX)

Unit as proposed above:
https://noctua.at/en/nf-a4x20-pwm/specification
Noctua NF-A4x20 PWM - 15.97CFM (MAX) 14db (MAX)

So it produces almost twice the airflow and half the noise. I've changed out many of my BM units with these (after warranty expires) and it makes a night and day difference!

Best,

David

Videobegin wrote:Interesting : half the price of original and from a brand known for low noise products. ;)

Will buy one to check if same airflow level...


dB are a logarithmic scale, so going from 27dB to 14dB is like 30 times less noise
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Raphaël Jacquot

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Re: Noisy fan : source for replacement ?

PostWed Sep 21, 2022 1:07 pm

Videobegin wrote:Received fan today. Coding color is different.

I'm not sure if BMD follows usual cabling for computers so I ask confirmation before something burn !

black to black
yellow to red
green to yellow
blue to blue

:?:


here's a youtube video
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Howard Roll

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Re: Noisy fan : source for replacement ?

PostWed Sep 21, 2022 2:32 pm

Raphaël Jacquot wrote:
dB are a logarithmic scale, so going from 27dB to 14dB is like 30 times less noise


It’s just over 4X quieter, each doubling or stop=6db.

Good Luck
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Videobegin

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Re: Noisy fan : source for replacement ?

PostSat Sep 24, 2022 1:27 pm

THANKS friends for help.

Job was done.

fanmoded.jpg
with new connector
fanmoded.jpg (395.62 KiB) Viewed 342 times

fanend.jpg
after
fanend.jpg (392.34 KiB) Viewed 342 times
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David_Anderson

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Re: Noisy fan : source for replacement ?

PostMon Sep 26, 2022 6:42 pm

What's your impression of the noise levels compared to the old fan?

Best,

David

Videobegin wrote:THANKS friends for help.

Job was done.

fanmoded.jpg

fanend.jpg
David Anderson
Leading Edge Multimedia
https://leadingedgemultimedia.com
(888) 336-LEMM
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Videobegin

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Re: Noisy fan : source for replacement ?

PostMon Sep 26, 2022 8:17 pm

David_Anderson wrote:What's your impression of the noise levels compared to the old fan?
David
I have two teranex AV (original & modded) and difference is BIG !

I reordered more fans ;)
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Raphaël Jacquot

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Re: Noisy fan : source for replacement ?

PostTue Sep 27, 2022 8:17 pm

Videobegin wrote:
David_Anderson wrote:What's your impression of the noise levels compared to the old fan?
David
I have two teranex AV (original & modded) and difference is BIG !

I reordered more fans ;)


which exact connector did you get ?
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Videobegin

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Re: Noisy fan : source for replacement ? teranex

PostWed Sep 28, 2022 7:48 am

also mod teranex express.
express1fan.jpg
express1fan.jpg (395.04 KiB) Viewed 167 times

But there is another noisy fan
express2fan.jpg
express2fan.jpg (389.83 KiB) Viewed 167 times


connectors are ZH serie from JST

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