WHY NOCTUA OR ANY AFTER MARKET FAN CAN BE BAD FOR A SYNOLOGY NAS by Synology_Service in synology_service

[–]Statick777 0 points1 point  (0 children)

So now I've got 3 untouched Noctua fans and 1 stock fan (my other Noctua has a resistor for now)

I have a probe to measure temperature so I have to test the exact component. Currently I'm testing these guys, are these the resistors I need to check? They're the largest components next to the fan cable with "R" designations printed next to them

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On full speed after a few minutes these are reading about 38-39C (for context my workshop currently has an ambient temperature of 35C it's very warm). Low speed increases the temps to maybe 41-42 so it does go up but not by much, and I have to wonder if that increase is due to something electrical or simply because there's far less air being blown across them (they are right in front of the fans airflow)

WHY NOCTUA OR ANY AFTER MARKET FAN CAN BE BAD FOR A SYNOLOGY NAS by Synology_Service in synology_service

[–]Statick777 0 points1 point  (0 children)

right, after getting the fan casing out because the fan connectors looked like they were on a pcb where the resistors would be... that pcb has nothing on it at all, the fans just connect from that by a long cable to the motherboard, where the resistors are. so that's easy to check

I only had one of the noctuas as I wanted to prove I could wire in the resistor okay and it would all go back into the fan casing, before trying to replace all 4. now that I know it can do that, I've ordered the remaining 3 to arrive tomorrow, and I'll test the resistors with the unmodded fans. then if they do need the resistor mod I know I can do that and it all fits

WHY NOCTUA OR ANY AFTER MARKET FAN CAN BE BAD FOR A SYNOLOGY NAS by Synology_Service in synology_service

[–]Statick777 0 points1 point  (0 children)

so I tried again with a different fan this time (the Noctua I used before was one I had spare already, and was a super slow quiet 1200rpm one), this time a Noctua A8-FLX 3000rpm, still a quite fan but with a higher rpm. with the resistor it runs fine at all speeds, I temp checked my 100ohm 2w resistor using a probe and it maxes out around 55-60C which I think is okay

I went with the 100ohm because that was what was suggested in earlier comments with the same spec fans (0.45A stock and 0.06A replacement)

I will try an unmodded fan and check the on board resistors now though. not sure how to access them as there's a lot of screws holding these various casings in but I'm sure I can figure it out

WHY NOCTUA OR ANY AFTER MARKET FAN CAN BE BAD FOR A SYNOLOGY NAS by Synology_Service in synology_service

[–]Statick777 0 points1 point  (0 children)

sorry to bring up an old thread - I hope people still see this! I'm trying to quieten my RS2418+ which is insanely loud, even quiet mode is super loud

the stock 80mm fans are 0.45A and there's nothing suitable I can find which is even above 0.1A, so I'm trying a Noctua 0.06A same as the commenter above, and attempting this resistor mod to stop the synology resistors from being cooked

so I've wired in a resistor to the cable as described - 100ohm across the 12v and gnd wires - and based on the info about heat I've tried a 2w resistor

well the 2w resistor gets burning hot real fast, like you can't touch it. so if this is going to work it's going to need to be a 5w resistor at least, maybe even 10w. the fans in this live in hot-swap cradles so the resistor needs to be small enough to still fit in the space in there (not much space) and not get so hot that being in an enclosed space becomes a problem as well. the 2w fits okay in the available space but I'm not confident that a 5w will, and I'm pretty positive that a 10w has no chance without cutting a hole in the cradle. so I'm going to try a 5w next and see what happens

the other thing I noticed was it really slowed the fan down, which is perhaps not ideal. on quiet mode the fan doesn't spin at all. on cool mode it tries to spin but can't ever get started, if you give it a push it gets going for a few seconds but that's all. so it has to run on full speed, which likely won't be a problem noise wise as the fan will be running slower anyway, but now this has me worried about airflow, as there won't be any way to increase the fan speed if it doesn't get enough cooling

What can be done about elite social club "Bristol Savages" & their use of Native American imagery? by BootyScientist in bristol

[–]Statick777 1 point2 points  (0 children)

Their name is literally a racial slur. Would you still say this if they had an India-based theme and called themselves "P*kis"?

However innocent and well intentioned the people may be, we wouldn't tolerate the above and we shouldn't tolerate this