I don't know if this is hardware related or more to software, but I know frodocooper will handle this in no time

so the old school trick that works on S9,S9j and S9i does not work on the K/E version as well as all the new models such as S17pro/+ T17/e, I have no idea why does Bitmain continue to try and limit users on what they can do with their miners, but well, everything is done for a reason, which in this case, does not really matter.
so just to recap, in all other S9 models all you had to do is right-click on the miner setting page, hit inspect you get this.
https://i.imgur.com/P8FVy2L.jpgyou go to the line where it says fan_ctrl and delete that "none" part, then you hit enter and the fan settings appear on the web page.
well sadly this does not work anymore on the K version, and here is what happens when you do the same thing.
https://i.imgur.com/HCz46Cz.jpgNothing!
what Bitmain did was put all of these "perks" under one class/set and disable all of it, so it's like every child will inherit the default setting in the parent class header, which is this one
Hi Guys.
I am running just one card with a silent 650w PSU supply, i have custom FW though allows me alter Freq/Voltage.
I also have the fan speed 100% unchecked but fans are throttling up/down constantly. I have messed around with freq/voltage to no avail.
Will i find the same command line and if so do you delete the whole line?
Or do i need to flash a a Bitmain FW, it's a very old standard 13.5Th S9.
Thanks
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so after you delete the "none" part from the fan_ctrl , you need to delete it from the class line too, like so
https://i.imgur.com/niLXCrZ.jpgand bingo!! your fan control is enabled.