iFixit - Answers With Device "Air Purifier"

Dyson am09 hot cool heater fan: Fan Wont power on - part blown

Mon, 29 Jun 2026 14:16:47 -0700

Hi There!
My fan is no longer powering on and from taking it apart as best I can it looks like one of the chips has blown although i'm struggling to identify the part to attempt replacement, does anyone know what this part may be?

⟐ Answered 6月 29, 2026 at 14:16 GMT-7

Dyson AM07 Tower Fan: faulty fan now board dead

Fri, 26 Jun 2026 15:19:09 -0700

So i have just replaced the oscillating motor and the x2 cap to fix the side to side movement and stop it happening when it's off! the main fan motor was a bit noisy, so i decided to take the impeller off the motor and clean and lube the bearings...bad idea! the impeller ended up breaking the locating lugs off the bottom of it, and after all the messing around, when i turned it all back on, the motor was really unhappy, causing surges and then cutting out completely. tested the fan from a known good machine and it worked for half an hour continuously at 10 without any issue...

I managed to source a second hand unit from a dyson repair shop nearby, and it arrived today - plugged it in, the display came on, motor did nothing...seconds later the screen went dark and nothing worked since. i've since tested the motor, and it seems to have a short/very low resistance between the case and W1 phase wire - obviously it's sent 300v upstream and done some damage!

I've checked the fuse, all the 0ohm resistors i can find, and run through a load of testing with the help of AI to prove the buck regulator, the mosfets and the driver ICs all seem to be behaving as expected. however, after tracing U2 (5v regulator), it seems to have a direct short to ground on 2 pins. from what i can find, it appears pin 1 is output (apart from anywhere else, it supplied voltage to the screen), pin 2 gnd and ping 3 input - which appears to have a direct connection to the buck regulator IC output. thinking the 5v regulator had gone short, i pulled it.....and still have the short. then i removed cap c7 to make sure that wasn't shorting....it wasn't either.

Literally tearing my hair out now (shop said they wouldn't replace the damaged board, but have agreed a 50/50 split on a new board if i have to; but I would rather fix this.

Can anyone offer any advice? any common failures when the motors go short?

Thanks all!

Levoit Core 200S: My fans stopped working and I want to fix it!

Mon, 15 Jun 2026 07:32:11 -0700

My Levoit 200 lights up and everything when plugged in. The user control all seems to work and the only thing not working is the fan. I’d like to replace the motor and see if that fixes it. Please help me with how to get started and where I can get the parts!

⟐ Commented 6月 15, 2026 at 7:32 GMT-7

Dyson Pure Cool Hot Link (HP03): Sound when on oscillation mode

Thu, 28 May 2026 10:55:20 -0700

As the title states when it moves left or right it makes a sort of clicking/vibrating noise.

⟐ Commented 5月 28, 2026 at 10:55 GMT-7

Legend Brands HEPA 700 AIR SCRUBBER 115V 125938: Filter is not recognized

Tue, 21 Apr 2026 13:15:38 -0700

I already changed all filters but the screen is showing that the filter is no recognize

⟐ Commented 4月 21, 2026 at 13:15 GMT-7

Air Purifier: Fix the electric motor on my air purifier

Sun, 15 Feb 2026 20:54:30 -0700

Have a hunter tower air purifier..first use, it smelled when the fan ran..took it apart, opened electric motor and it looked fine..put it back in together and the motor won't turn now unless I give it a helping push..it also only turns at medium and high power, not low.

What could the issue be? It seems to rotate smoothly when turned off so I don't think friction is the issue

For reference, here are some images:

Pictures of the circuit board:

⟐ Commented 2月 15, 2026 at 20:54 GMT-7

Winix C535: Motor is making a Wha Wha Wha noise

Tue, 03 Feb 2026 12:51:26 -0700

The noise is definitely coming from the motor and the frequency of the wha wha noise increases with increased fan speed.

Is there a replacement motor available?

⟐ Commented 2月 03, 2026 at 12:51 GMT-7

WINIX ZERO Compact: It has started making a rattling noise

Thu, 04 Dec 2025 02:04:03 -0700

I’ve had the Winix since 2021 I have it on all the time. It has started making a rattling noise I think it maybe needs a bit of WD40 lubricant in the moving parts. How to get into it is the problem ? Any ideas please ?

Brondell air purifier: Device does not reset or turn on - How to find spare parts?

Wed, 03 Dec 2025 16:09:35 -0700

We were given a broken Brondell (also branded Aktobis or Winair) air purifier. It stopped working when changing filters and Brondell doesn’t offer repairs or spare parts. [Edit: We followed all reset procedures suggested by the owner’s manual]. The device briefly turns on before turning off again. Resetting does not appear to work. There are no apparent damages to the boards (there are three, the main control board, the CO2 sensor and the user controls)

We have already tried replacing the power cord to no avail. We can’t find the problem, and can’t find spare parts that’d enable to switch and test the boards. Any recommendations?

⟐ Commented 12月 03, 2025 at 16:09 GMT-7

Dyson Pure Cool AM11 Repair: Tutorial missing on motor disassembly and cleaning

Mon, 24 Nov 2025 11:12:16 -0700

Currently the most important problem I have is the motor making a buzzing or ticking sound and it obviously needs lubrication and cleaning, but this is missing from the tutorial.

Air Purifier: My air Bissell air purifier

Sat, 22 Nov 2025 06:47:39 -0700

Machine goes on then off immediately after booting up, I've replaced the filter checked the cord plugged it into a new outlet pressed buttons no difference won't even turn on.p

⟐ Edited 11月 22, 2025 at 6:47 GMT-7

Mooka AP-S0610L: Some plastic pieces broke but purifier still seems to work

Sat, 01 Nov 2025 19:21:16 -0700

Does purification still work even tho some plastic parts broke

⟐ Answer edited 11月 01, 2025 at 19:21 GMT-7

Air Purifier: Looking for repair manual

Mon, 22 Sep 2025 03:28:44 -0700

My Holmes HAP702 air purifier just shut down after running almost non-stop for 5 years. I tried finding a repair shop near me, but the only non-cellphone electronics repair shop that I found was a vacuum cleaner repair shop that charges 50 USD at a minimum. A replacement air purifier that's compatible with my stock of air-filters costs a bit less than that after shipping and taxes.

I thought about fixing it myself, but the only manuals I could find for it are user manuals, which aren't much help when trying to fix a discontinued unit.

I read that if the fan is hard to turn, then the motor needs to be replace, but after taking it apart, I'm able to see that the fans still spin freely.

I was hoping that someone could point me a repair manual for this that might help me figure out the issue. I'm going to start poking around the insides two days from now. I would do it tonight, but I want to give the capacitors plenty of time to drain.

⟐ Edited 9月 22, 2025 at 3:28 GMT-7

GermGuardian AC4825E: Need torx driver to take apart?

Mon, 18 Aug 2025 17:20:56 -0700

Squeaky fan, want to lube, trying to take apart. This unit has a single very deep Torx screw. Anyone know what size and length driver fits?

The demon engineer embedded the screws in deep narrow tunnels, too narrow for interchangeable bits. Which also makes it difficult to photograph.

⟐ Commented 8月 18, 2025 at 17:20 GMT-7

Vax AP01: APO1 air purifier is not working after I changed the filter?

Sat, 26 Jul 2025 17:28:22 -0700

Hi! My APO1 air purifier is not working after I changed the filter? I can’t find my owners Manuel plz help

⟐ Answered 7月 26, 2025 at 17:28 GMT-7

Vax AP01: Faulty Vax AP01 air purifier, need help sourcing components

Sat, 26 Jul 2025 10:35:41 -0700

My Vax AP01 air purifier broke at the weekend, plugged it into the wall socket and heard a pop, now it won’t work at all.

Opened it up to find a coil/inductor has blown as well as some burn marks next to a chip with the markings VIPER12A F24610. Which i've found this as a possible replacement? https://cpc.farnell.com/stmicroelectroni...

I'm reasonably handy with a soldering iron but not very good at problem solving circuit boards. I am looking to purchase a new coil/inductor to replace as well but no idea which one to buy. The colours are BROWN - BLACK - RED - SILVER

I contacted Vax but they cannot supply a schematic or any replacement parts so here I am.

Any help would be greatly appreciated and thank you in advance!

Hi @jayeff

Thank you for the reply! That's a great help. I searched the board numbers but unfortunately didn't find any results.

I did however notice the fan had 220v AC printed on it so decided to crimp this directly to the power cable. (I'm in the UK so our household sockets are 230v) It's fixed on medium speed but it works until I can source the right components

⟐ Answered 7月 26, 2025 at 10:35 GMT-7

AlexaPure Breeze: Repair of Alexapure Breeze; fan Startup Fails

Sat, 28 Jun 2025 15:25:44 -0700

Alexapure Breeze on startup lights sequentially light up,

then back down, then off. Repeats with subsequent attempts.

Filters have been replaced. One Electrolytic capacitor replaced that had bubbled.

Tested and no change,

it Will not start the fan, just repeats light up and down sequence

and I had just purchased new filters for it thinking that was part of the problem.

Nope. I have not isolated the problem yet.

model AP-B102

Legend Brands HEPA 700 AIR SCRUBBER 115V 125938: Filter Is Not Recognized

Tue, 03 Jun 2025 21:13:23 -0700

It shows filter is not recognized but the filter is new and clean perfectly installed.

⟐ Commented 6月 03, 2025 at 21:13 GMT-7

Dyson am09 hot cool heater fan: How to repair screen on Dyson AM09?

Sun, 02 Mar 2025 23:03:56 -0700

We own two of those Dyson Hot+Cool but after a few years of good service, their screens are not working properly.

Does any know how to repair or replace the screen?

Otherwise those devices work fine.

Dyson Pure Cool AM11 Repair: Just changed filter and the f still shows

Wed, 19 Feb 2025 09:40:17 -0700

How to get the F off the display after changing filter