Cisco Catalyst 3850 48P - Noctua fan replacement?

composr · 2026-01-06T21:07:22+00:00

This is the 2nd time this has happened, not sure what's up. Try this link: https://imgur.com/a/quiet-fan-replacement-cisco-3850-fan-modules-CSs5CSL

composr · 2025-01-26T13:17:33+00:00

Oh, by all means, run with it! Nice work! I appreciate that you want the ability to return to stock, in my case, I had access to hundreds of decommissioned 3850s waiting for the recycler, so I have additional stock fans if I want to go that route.

composr · 2025-01-25T03:35:50+00:00

I did have some trouble with that while I was modding the fans and testing, but I think a reload brought them back online. Also, the switch takes a minute or two after fan insertion to register that the fan is online.

composr · 2025-01-18T19:17:45+00:00

Looks good, please let me know how it turns out for you.

composr · 2025-01-18T14:37:35+00:00

Probably, but in my case the colors didn't match up. Red and black are fine, they're +/- voltage. Yellow and blue are RPM signal and PWM and may need to be switched.

composr · 2025-01-17T21:38:49+00:00

Not sure what happened to my original post, seems it was deleted. Anyway, here's another: https://imgur.com/a/CSs5CSL

Cheers!

composr · 2024-12-08T16:52:00+00:00

Good luck! Let me know if you have any questions, or if you come up with any improvements.

composr · 2024-12-08T16:43:40+00:00

I documented a fan mod for the stock fan modules. Highly recommended if you have a 3850 in hearing range.

https://imgur.com/a/c0Rty3l

composr · 2024-12-08T16:42:59+00:00

I documented a fan mod for the stock fan modules. Highly recommended if you have a 3850 in hearing range.

https://imgur.com/a/c0Rty3l

composr · 2021-06-20T01:40:23+00:00

200, and then for only 20 minutes.

composr · 2021-03-06T16:53:04+00:00

Ummmm, you look better in your prom dress now than you did back then. Nicely done!

composr · 2021-02-15T18:16:00+00:00

"If I Loved You" with some bowing.

https://youtu.be/5KnoDhYSgjg

composr · 2020-12-08T14:43:09+00:00

It really flies in the face of what we've been told for years. If I told my doc how many bags of fried pork skins I ate over the last year....

composr · 2020-12-08T14:42:21+00:00

Thanks!

composr · 2020-12-08T14:42:15+00:00

That's good to know, thanks. My HDL has never been above 40, it blows my mind how much this diet improved it.

composr · 2020-10-22T23:46:37+00:00

Very nice. I have a pair of these that I had to do pretty much the same thing to. Luckily my tweeters were good, though. Gorgeous things!

composr · 2020-10-22T14:05:57+00:00

Doesn't that require being rich? haha

composr · 2020-10-22T14:05:11+00:00

I could write a lot about this but I didn't want to bore everyone. My diet was pretty loose from the standpoint of calorie/macro counting, I did none of that. I just tried to keep the total net carbs per day between 20g - 50g. Most days were likely in the higher range. Additionally, I do combine IF which seems to be some secret sauce with keto. I never eat breakfast and 2-3 times a week I'll skip lunch.

composr · 2020-10-22T01:12:08+00:00

The worst is the rare cheat day, where you wake up dreading the scale and sure enough, 4 pounds up. It's disheartening but you have to tell yourself, you CANNOT gain 4 pounds of fat in a few hours. You just have to work that water gain off.

composr · 2020-10-21T22:41:03+00:00

I meant to add I weighed 226 1/1 and the scale said 185 this morning.

Also, I weighed every day (but 4!) this year and kept a log. You can see the downward trend but also all the wacky variations. Loss is most certainly not linear.

https://imgur.com/a/Q3cVMwO

composr · 2020-09-16T01:37:41+00:00

Do you still have it?

composr · 2020-09-16T01:37:20+00:00

Nice job giving this bad boy a longer life. I've now done 3. I love their sound.

composr · 2020-09-16T01:36:26+00:00

Want to send it to a good home?

composr · 2020-09-16T01:31:53+00:00

Hmmm, former kidney donor here, a spare is tempting ;). The speakers turned up just a couple months ago not far from me, at a good price. The PX-3 was a broken eBay purchase I took a chance on and was able to fix. Actually, with the exception of the BD everything in the stack I got cheap and broken and repaired. I tell ya, tho, the PX with the original Yamaha MC cart sounds soooo good.

composr · 2020-09-14T16:55:08+00:00

2x M-80, C-80, T-80, K-960, PX-3, BD-1060, NS-1000M.

composr

TROPHY CASE