[Music] he is [Music] hey guys RPM here hope you're doing well having a really great day well I am now going to see if my bitmain S21 is going to be fixed simply by replacing the fan I just got in a care package from alter tech. thank you to them this came really fast they sent me four new fans with the square plugs you guys can see here as you all know my S21 I already did a video of it explaining the error codes that I was getting I'll show you on the screen here basically F1 for fan one I guess that was having a I don't know some reporting issue even though I did see it spinning and uh we were going to try to fix it in that video but but I realized I didn't have any fan Replacements I do have the normal you know four pin for power you know these typical plugs here but the S21 has the new Square fan plugs all right for uh from what I understand is to provide more power and to handle more wattage for the newer fans as the S21 obviously needs it because yeah ambient temperatures on this S21 as we've tested matters a lot so my ambient temperature was around 90 fahit and so this was pulling almost I don't know 38 3900 WTS pretty much 300 to 400 WTS more than advertised to get that you know 17.5 Jewels per terahash and so I'm getting like 18.7 or around there so not as efficient as temperature rises with this thing anyways besides the point I just want to see if I can fix this in today's video so guys let's begin and thank you to Crypt Miner Bros for sending me this S21 a while back back unfortunately it had to die a couple days later but if you guys are looking for s21s link down below okay as well if you guys are looking for the new Square style fans I know the s19 K Pros I believe they have two of these on there and as well as the s21s they require four uh of these Square New Square style plugs alterac doio sells them and they also sent me these adapters which I'm not going to use in this video but this is just for future where it has the adapter from the four pin to the Square okay so I'm not quite sure how you know safe these are but I guess the ability to adapt is there okay so but I'm just going to use the full Square fan here okay so let's begin first I am going to take apart the control uh board at the top sorry not take apart but take off the lid at the top so how we do that we're going to start off taking out the back screw right here okay okay and pop this off like so okay so here's the fun part I need to figure out where F1 is now judging by the writing here I don't know if you guys can see it on video but there's fan one here and then we have fan three there and then since fan 2 here and then fan 4 for this one right here so fan one I'm going to assume it's this one here and so that was the air that was Associated uh with this S21 that's why it wouldn't mine so looks like I'm going to have to cut this off and then I just have to uh this is going ah this is the fan that's going out in the back okay so I'm going to have to replace one of these I'm not going to replace the other one whichever one it is so let me bring you guys along okay I got to snip this uh this black cable tie here then then pulling out the number one you know what I probably have to oh it's also tied to the other fan okay so I have to unplug the J or fan 3 as well in order to get this out okay and then there's another issue it's I'd say pretty hard stuck into the power supply side here so it looks like I'm going to have to take off this cover okay so let's let's do that I believe there's two screws so one here and also one down here below the fan cable so let's take this one out as well okay and so now I should be able to just pull this towards me yep okay so this part came out now okay so you guys I'll just show you here what it looks like okay so that's why I had to take it out so now I should be able to just pull these out underneath the bus bars which is uh a scary thing to do because yeah I don't know if there's ever like residual power in these you know when you stop mining unplug it I wonder how long it you know I I never tested it out myself but if anyone else out there ever got shocked from a bus bar let me know down below okay so I royally screwed up I don't know which one I just took out so you know what I'm just going to replace both fans ah I screwed that up so bad anyways let me uh let's quickly replace the fans [Music] like a [Music] psychop tell people don't believe that I can get I'm my I'm my like I my egg I'm going my like I what the [ __ ] you do I'm my [ __ ] you going [Music] do what the [ __ ] you going [Music] do okay there we go both fans have been replaced I screwed up I should have known which one it was because one is obviously still in working order hopefully but anyways so just explain what I did here so very easy to change the fans you guys saw and then I'd say one thing I almost forgot and I don't know if this is an issue or not there is this black like heat shrink wrap I took out from the other fans as it looks like it was going through uh here okay I guess this is some way to protect uh the fan plugs maybe the bus bars are providing heat so that's why they they wrapped it in some sort of heat shrink wrap I'm not quite sure any Asic repair people out there comment down below for anyone that probably reads I know a lot of people read the comments so uh let me know what the reasoning is for this black uh this black wrap here which fits nicely in between the metal for the fence un plug wires okay so next part I'm just going to plug these in I don't think it matters which one goes to which okay so Fen one and Fen three it's interesting that these are not in order like it should I wonder why it's not like fan one fan 2 fan 3 Fan 4 and it's like it's here it says fan one fan 3 Fan 2 and then and fan 4 so yeah just really weird okay anyways it's plugged in let me plug the cover back on and then we are going to turn this thing on and see if it mines that's the whole point of this video If just changing the fans on this S21 is the culprit here for it not working okay let me uh get this plugged in [Music] okay just plugged in turning on hopefully the fans are working okay let me log into the web goey okay it seems like it's mining Now power consumptions hitting up 3,800 Watts okay so here was the previous error before okay it's a sweep eror string f11 so yeah uh fan air fan lost fan lost okay so that's the error we had before so now under the uh that was history log now under the current log everything seems seems to be just fine it's not showing any fan errors and it's yeah obviously it seems like it's Mining and adjusting right now so there we go yeah it mines perfect now okay just started and yeah looking at the uh the fans here it says uh right now it's pretty low now it's ramping up okay but before we had some irregularity with uh fan one that was like 5,000 fan speed everything else was like 2,000 so yeah anyways that worked guys just replacing the fan was the culprit okay that's it guys it worked just by replacing the fan okay but this thing is this thing is just going nuts almost 4,000 watts for 200 terahash I don't I wonder if I got like I don't know a bad batch or something silicon Lottery this thing draws way more power sometimes uh actually most of the time from what I tested than and you know what is advertised but they advertised if you look at their ambient temperature they actually have an infograph showing like if you had like I don't know 40 Fahrenheit or something super cold then this thing would be drawing like 3,500 Watts at uh 200 terahash so that's like the 17.5 Jewels per terahash as they claim kind of misleading but I guess maybe for those that are industrial or live in cooler areas for Bitcoin mining then you know maybe it's fine anyways guys I just wanted to do a video on this thank you alter tech.
for the fans here also if you guys are looking for a bit main at Miner S21 Crypt Miner Bros has these in stock okay so go check them out links down below if you're looking for fans as well okay peace out everybody let me know your thoughts have a good one peace out peace [Music] out.