Put a fan guard between the fan and the filter material, jammed fan = significant probability of overheated and DEAD miner even if you don't get a fire (which isn't REAL high probability).
Don't all S9s come with a fan guard? All of mine did.
Topic: Whining noise from S9 fan? (Read 432 times)
Put a fan guard between the fan and the filter material, jammed fan = significant probability of overheated and DEAD miner even if you don't get a fire (which isn't REAL high probability).
Don't all S9s come with a fan guard? All of mine did.
Well I added the filter to the s9 had a 10C change in moments which made me nervous to leave as I got ready to end the day. So I cut a piece in proportion to the tape I had to control the sound, now I have more air flow than previously and less whine/whistle. I think as well, when the really cooler months come again I might use these to filter the air, reducing dust and bring temps up. As s9 like to run warmer than s7 which seemed to like 60-70C for me.
Any thoughts on the filter causing a fire hazard if enough of the poly is pulled in over time?
Any thoughts on the filter causing a fire hazard if enough of the poly is pulled in over time?
Put a fan guard between the fan and the filter material, jammed fan = significant probability of overheated and DEAD miner even if you don't get a fire (which isn't REAL high probability).
Essentially that's what I purchased at HD. Not much in details on the packaging though.
The ones I bought at Lowes were approximately 4" x 12" and no more than a 1/4" thick. They were designed to be put into air duct floor registers.
Edit: Found them https://www.lowes.com/pd/WEB-12-Pack-Green-and-White-Bag-Register-Vent-Filter/3122205
Edit: Found them https://www.lowes.com/pd/WEB-12-Pack-Green-and-White-Bag-Register-Vent-Filter/3122205
Well I added the filter to the s9 had a 10C change in moments which made me nervous to leave as I got ready to end the day. So I cut a piece in proportion to the tape I had to control the sound, now I have more air flow than previously and less whine/whistle. I think as well, when the really cooler months come again I might use these to filter the air, reducing dust and bring temps up. As s9 like to run warmer than s7 which seemed to like 60-70C for me.
Any thoughts on the filter causing a fire hazard if enough of the poly is pulled in over time?
Any thoughts on the filter causing a fire hazard if enough of the poly is pulled in over time?
Have you tried the filters on any 741, 821's from Canaan? They can whistle to although I find it more bearable than the s9 at max fan speeds.
Unfortunately only have experience with S3s, S4s, S7s, and S9s. Thinking about dipping into 841s, but that is a different thread.
Roger that, a bit relevant to the whistle/wine but not an antminer.
I'll give it shot and update in another thread about the avalons as I was at Home Depot today and grabbed some duct filters. They seem pretty thick so I'll set it up when I have time to monitor temps for a couple hours with shop doors closed and just intake and exhaust fans on (only have 350 CFM in/out for my small mine).
High-backpressure-tolerant many-blade fan designs are notorious for their high-pitched "whine" when running at high RPMs.
It's PROBABLY normal.
It's PROBABLY normal.
Concur that its normal. That said, the screw torque or filter material may help you adjust it to something less annoying.
High-backpressure-tolerant many-blade fan designs are notorious for their high-pitched "whine" when running at high RPMs.
It's PROBABLY normal.
It's PROBABLY normal.
Have you tried the filters on any 741, 821's from Canaan? They can whistle to although I find it more bearable than the s9 at max fan speeds.
Unfortunately only have experience with S3s, S4s, S7s, and S9s. Thinking about dipping into 841s, but that is a different thread.
Usually seeing around 30-40 C intake depending if shop door is open or closed atm. Thinking summer I should expected 40-50 deg intake on HOT days. Usually I'll power down anyway if I cant cycle enough cooler air in as my cooling is only moderate. Once I chip away at ROI my cooling refinement is high priority but in US NW area heat isn't much of an issue outside of a week or two a year of scattered days.
Have you tried the filters on any 741, 821's from Canaan? They can whistle to although I find it more bearable than the s9 at max fan speeds.
Have you tried the filters on any 741, 821's from Canaan? They can whistle to although I find it more bearable than the s9 at max fan speeds.
Everything remained well in spec with the Lowes filter in front, but that is of course, VERY dependent on your intake air temps.
I've also found that adjusting the torque on the fan screws can help some.
If your willing to replace them every few weeks, Lowes sells thin poly heating duct register filters in something like a 12 pack. Ripped in half, they are just about perfect for sitting over the intake grill and will greatly change the tone of your fans. I only used them on my high pitched whistlers , since I found that noise the most annoying. You will get a few degree bump in operating temp if you use them - but that generally beats a headache from the sound.
If your willing to replace them every few weeks, Lowes sells thin poly heating duct register filters in something like a 12 pack. Ripped in half, they are just about perfect for sitting over the intake grill and will greatly change the tone of your fans. I only used them on my high pitched whistlers , since I found that noise the most annoying. You will get a few degree bump in operating temp if you use them - but that generally beats a headache from the sound.
I'll have to try this, I have a wailer as well. I took a piece of tape and put on the front fan after holding a couple fingers to the grill on various places to fin where the air flow seems to "sing" the most. You say a few degrees temp increase, what have you noticed specifically since summer is coming?
I've also found that adjusting the torque on the fan screws can help some.
If your willing to replace them every few weeks, Lowes sells thin poly heating duct register filters in something like a 12 pack. Ripped in half, they are just about perfect for sitting over the intake grill and will greatly change the tone of your fans. I only used them on my high pitched whistlers , since I found that noise the most annoying. You will get a few degree bump in operating temp if you use them - but that generally beats a headache from the sound.
If your willing to replace them every few weeks, Lowes sells thin poly heating duct register filters in something like a 12 pack. Ripped in half, they are just about perfect for sitting over the intake grill and will greatly change the tone of your fans. I only used them on my high pitched whistlers , since I found that noise the most annoying. You will get a few degree bump in operating temp if you use them - but that generally beats a headache from the sound.
I had a whistler once and I solved the issue by unscrewing the exhaust fan a bit and jamming a tiny piece of plastic in the crack to hold everything tight and leave a little space where air could come in. That reduced the pressure on the intake fan and stopped the whistling. Probably not the most ideal situation, but it was a tiny crack and didn't seem to effect temperatures much.
I was dealing with the same issue. I just got 4 S9's . 3 have the shit fan( not YLD12BM-12D)(just ordered 3 others from aliexpress https://www.aliexpress.com/item/Cooling-Fan-Replacement-D12BM-12D-4-pin-Connector-PWM-12038-12v-2-3A-6000RPM-For-Antminer/32850164857.html) and whine constantly. It is a piercing wail that gets in your brain and doesn't leave, building and building until you think your head will explode.
I found a solution. Reduce fan speed to 75% or somewhere in that range (3360/4920) current temps 82/74/76
Not to take credit for someone else's hard work ...
https://www.reddit.com/r/Bitcoin/comments/7hyaq7/adjust_fan_speed_antminer_s9/
I found a solution. Reduce fan speed to 75% or somewhere in that range (3360/4920) current temps 82/74/76
Not to take credit for someone else's hard work ...
https://www.reddit.com/r/Bitcoin/comments/7hyaq7/adjust_fan_speed_antminer_s9/
The conversation drifted towards another issue that I'm not primarily concerned about. It's not the noise but the uneven nature of the sound which is bothering me. My mistake, let me add more to it. The fan is constantly ramping up and down with a strange whistling noise that my D3 units don't make. I also have some more information to add to it which might help. I found out when is the fan making the noise.
Please take a look at the attached image:
https://imgur.com/a/cyANY
You see 3 'yellow' columns which signify the duration for which my S9 was rented on miningrigsrental.com
From the right, the highly fluctuating hashrate graph is when the S9 is being noisy. At this point, all the hashborads are under 78c. During the rented duration when you don't see the fluctuation in the graph, the S9 is running smoothly.
There's nothing I'm doing from my end that might cause this uneven hashrate.
Please take a look at the attached image:
https://imgur.com/a/cyANY
You see 3 'yellow' columns which signify the duration for which my S9 was rented on miningrigsrental.com
From the right, the highly fluctuating hashrate graph is when the S9 is being noisy. At this point, all the hashborads are under 78c. During the rented duration when you don't see the fluctuation in the graph, the S9 is running smoothly.
There's nothing I'm doing from my end that might cause this uneven hashrate.
you should really try to get temps down. they are supposed to operate under 40C
This guy is smoking crack.
The s9 can run over 100c.
The fan noise is normal, its an industrial miner not meant for home use. Changing the fan will cause nothing but problems.
One of my new S9s also has a whirling fan. Aside from the noise, I dont see any other issues with it. RPM is normal.
Under 80C chip temp is gold. 
Under 40 means it's not hashing!!
Under 40 means it's not hashing!!
ok, so here's the thing. I saw a post somewhere (reddit or bitcointalk) where someone had mentioned that it's due to a much slower intake fan that the miner makes the whistling sound. Then they talked about replacing the fan with a faster/silent model which reduced the whistling effect. Has anyone else seen this post? or if you can recommend me the fan I can upgrade to?
thanks!
thanks!
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