Corsair Recalls SF Series of PSUs due to Failure Concerns

AleksandarK · Jun 4, 2020

Corsair's SF series of PSUs has been long present as part of the company's offerings, designed to the satisfy small form factor crowd with its SFX size. Today, Corsair has announced that they will be recalling some units and replace them free of charge, including free shipping. Corsair says that "We have recently identified higher-than-normal RMA rates among our SF family of small-form-factor PSUs. Following a thorough investigation, we have found a potential issue that can manifest when the PSU is exposed to a combination of both high temperatures, and high humidity. This regrettably can cause the PSU to fail. This issue potentially affects units in lot codes 194448xx to 201148xx, manufactured between October 2019 and March 2020."

The problem is located in the AC conversion part of the PSU, not the DC one which interacts with PC components, so Corsairs points out that all of the components are safe even if PSU fails. To get a replacement PSU, Corsair offers affected customers to submit their tickets here, with the title "SF Series voluntary product replacement", so they can easily identify customers and give them quicker replacement units.

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xtreemchaos · Jun 4, 2020

thats very good of them but its not just the sf which has problems the cx and sx isnt fit and thay know it.

Vayra86 · Jun 4, 2020

Small Fire Series. Yep.

Well done anyway, I like how there is a somewhat complete explanation of the problem with it as well. Not the eternally vague 'something's wrong, give it back pls'.

Fourstaff · Jun 4, 2020

xtreemchaos said:
thats very good of them but its not just the sf which has problems the cx and sx isnt fit and thay know it.

They have redesigned CX a few years back, those with green stickers were affected but I haven't heard anything about the grey ones. Anecdotally, out of the 2 green CX I have used one of them failed at 6 year mark but the other is still going strong (7 years now).

I don't know much about SX though.

xtreemchaos · Jun 4, 2020

I Had the cx750 running my main rig a while ago the rig started hardbooting so got intouch with corsair with no reply for over 3 weeks by that time id moved on and put the psu in the bin and brought a seasonic. very slow service from corsair lifes too short but ive read loads online with folks having the same problem.

SN2716057 · Jun 4, 2020

Good that they acknowledge their mistake and provide a solution.
Luckily both my SF600's aren't affected.

Majestic1999 · Jun 4, 2020

Well, when I saw news about it I really started to worry because recently I have bought sf750 and it is still in transit to my postal box. And I really want to know what explodes in psu, and just repair\modify it, I don't want to send it back.

RH92 · Jun 4, 2020

Mine is not in the batch affected by this issue and i'm not prone to high temp/humidity anyways so i guess i'm pretty safe .

Sh** happens so i guess kudos to Corsair for handling the issue the way they do !

juular · Jun 5, 2020

Majestic1999 said:
Well, when I saw news about it I really started to worry because recently I have bought sf750 and it is still in transit to my postal box. And I really want to know what explodes in psu, and just repair\modify it, I don't want to send it back.

APFC diode shorts on the heatsink and fails due to failing insulation/thermal pad between them due to high humidity.

jonnyGURU · Jun 5, 2020

Fourstaff said:
I don't know much about SX though.

Because there is no SX?

xtreemchaos said:
I Had the cx750 running my main rig a while ago the rig started hardbooting so got intouch with corsair with no reply for over 3 weeks by that time id moved on and put the psu in the bin and brought a seasonic. very slow service from corsair lifes too short but ive read loads online with folks having the same problem.

One failure doesn't make an entire product line "unfit". Do you honestly think there is a single product out there that has a 0% failure rate?

xtreemchaos · Jun 5, 2020

its not a single product bro, do a google search its a well known problem with the range.

jonnyGURU · Jun 5, 2020

xtreemchaos said:
its not a single product bro, do a google search its a well known problem with the range.

I can also Google 5G causes Coronavirus and find people that actually believe that.

I work for Corsair. I know the failure rate. It's less than 1%.

When you sell 100 x more of a product than the next guy, you're going to see 100 x more complaints.

There is absolutely nothing wrong (i.e. "design flaw") with the CX series.

xtreemchaos · Jun 5, 2020

im happy for you mate

. so its you we got to blame then ? im only joking mate i see your point.

Majestic1999 · Jun 6, 2020

APFC diode shorts on the heatsink and fails due to failing insulation/thermal pad between them due to high humidity.
So, I guess the problem for dry and cold eastern Europe is overhyped.

System Name	1.FortySe7en VR rig 2. intel teliscope rig 3.MSI GP72MVR Leopard Pro .E-52699, Xeon play thing
Processor	1.3900x @stock 2. i7 7700k @5. 3. i7 7700hq
Motherboard	1.aorus x570 ultra 2. z270 Maximus IX Hero,4 MR9A PRO ATX X99
Cooling	1.Hard tube loop, cpu and gpu 2. Hard loop cpu and gpu 4 360 AIO
Memory	1.Gskill neo @3600 32gb 2.hyperxfury 32gb @3000 3. 16gb hyperx @2400 4 64GB 2133 in quad channel
Video Card(s)	1.GIGABYTE RTX 3080 WaterForce WB 2. Aorus RTX2080 3. 1060 3gb. 4 Arc 770LE 16 gb
Storage	1 M.2 500gb , 2 3tb HDs 2. 256gb ssd, 3tbHD 3. 256 m.2. 1tb ssd 4. 2gb ssd
Display(s)	1.LG 50" UHD , 2 MSI Optix MAG342C UWHD. 3.17" 120 hz display 4. Acer Preditor 144hz 32inch.z
Case	1. Thermaltake P5 2. Thermaltake P3 4. some cheapo case that should not be named.
Audio Device(s)	1 Onboard 2 Onboard 3 Onboard 4. onboard.
Power Supply	1.seasonic gx 850w 2. seasonic gx 750w. 4 RM850w
Mouse	1 ROG Gladius 2 Corsair m65 pro
Keyboard	1. ROG Strix Flare 2. Corsair F75 RBG 3. steelseries RBG
VR HMD	rift and rift S and Quest 2.
Software	1. win11 pro 2. win11 pro 3, win11 home 4 win11 pro
Benchmark Scores	1.7821 cb20 ,cb15 3442 1c 204 cpu-z 1c 539 12c 8847 2. 1106 cb 3.cb 970

Processor	i7 8700k 4.6Ghz @ 1.24V
Motherboard	AsRock Fatal1ty K6 Z370
Cooling	beQuiet! Dark Rock Pro 3
Memory	16GB Corsair Vengeance LPX 3200/C16
Video Card(s)	ASRock RX7900XT Phantom Gaming
Storage	Samsung 850 EVO 1TB + Samsung 830 256GB + Crucial BX100 250GB + Toshiba 1TB HDD
Display(s)	Gigabyte G34QWC (3440x1440)
Case	Fractal Design Define R5
Audio Device(s)	Harman Kardon AVR137 + 2.1
Power Supply	EVGA Supernova G2 750W
Mouse	XTRFY M42
Keyboard	Lenovo Thinkpad Trackpoint II
Software	W10 x64

System Name	Orange! // ItchyHands
Processor	3570K // 10400F
Motherboard	ASRock z77 Extreme4 // TUF Gaming B460M-Plus
Cooling	Stock // Stock
Memory	2x4Gb 1600Mhz CL9 Corsair XMS3 // 2x8Gb 3200 Mhz XPG D41
Video Card(s)	Sapphire Nitro+ RX 570 // Asus TUF RTX 2070
Storage	Samsung 840 250Gb // SX8200 480GB
Display(s)	LG 22EA53VQ // Philips 275M QHD
Case	NZXT Phantom 410 Black/Orange // Tecware Forge M
Power Supply	Corsair CXM500w // CM MWE 600w

System Name	1.FortySe7en VR rig 2. intel teliscope rig 3.MSI GP72MVR Leopard Pro .E-52699, Xeon play thing
Processor	1.3900x @stock 2. i7 7700k @5. 3. i7 7700hq
Motherboard	1.aorus x570 ultra 2. z270 Maximus IX Hero,4 MR9A PRO ATX X99
Cooling	1.Hard tube loop, cpu and gpu 2. Hard loop cpu and gpu 4 360 AIO
Memory	1.Gskill neo @3600 32gb 2.hyperxfury 32gb @3000 3. 16gb hyperx @2400 4 64GB 2133 in quad channel
Video Card(s)	1.GIGABYTE RTX 3080 WaterForce WB 2. Aorus RTX2080 3. 1060 3gb. 4 Arc 770LE 16 gb
Storage	1 M.2 500gb , 2 3tb HDs 2. 256gb ssd, 3tbHD 3. 256 m.2. 1tb ssd 4. 2gb ssd
Display(s)	1.LG 50" UHD , 2 MSI Optix MAG342C UWHD. 3.17" 120 hz display 4. Acer Preditor 144hz 32inch.z
Case	1. Thermaltake P5 2. Thermaltake P3 4. some cheapo case that should not be named.
Audio Device(s)	1 Onboard 2 Onboard 3 Onboard 4. onboard.
Power Supply	1.seasonic gx 850w 2. seasonic gx 750w. 4 RM850w
Mouse	1 ROG Gladius 2 Corsair m65 pro
Keyboard	1. ROG Strix Flare 2. Corsair F75 RBG 3. steelseries RBG
VR HMD	rift and rift S and Quest 2.
Software	1. win11 pro 2. win11 pro 3, win11 home 4 win11 pro
Benchmark Scores	1.7821 cb20 ,cb15 3442 1c 204 cpu-z 1c 539 12c 8847 2. 1106 cb 3.cb 970

System Name	Merc v8
Processor	Ryzen 7800X3D
Motherboard	Gigabyte X670 Gaming X AX
Cooling	Noctua NH-D15 with Arctic fans
Memory	2x16GB G.Skill Flare X F5-6000
Video Card(s)	MSI RTX 3070 VENTUS 3X PLUS
Storage	Solidigm P44 1TB, &2TB, Crucial MX500 2TB
Display(s)	LG UltraGear 34GP950G-B
Case	Caselabs Mercury S8
Audio Device(s)	Some Schiit with Edifier S351DB
Power Supply	Seasonic TX-750
Mouse	Logitech G600
Keyboard	Epomaker TH80 SE (Silent Red switches)
Software	W11Pro

Corsair Recalls SF Series of PSUs due to Failure Concerns

AleksandarK

News Editor

xtreemchaos

Vayra86

Fourstaff

Moderator

xtreemchaos

SN2716057

Majestic1999

RH92

juular

jonnyGURU

xtreemchaos

jonnyGURU

xtreemchaos

Majestic1999

Processor	RYZEN 7 5800X3D
Motherboard	Aorus B-550I Pro AX
Cooling	HEATKILLER IV PRO , EKWB Vector FTW3 3080/3090 , Barrow res + Xylem DDC 4.2, SE 240 + Dabel 20b 240
Memory	Viper Steel 4000 PVS416G400C6K
Video Card(s)	EVGA 3080Ti FTW3
Storage	XPG SX8200 Pro 512 GB NVMe + Samsung 980 1TB
Display(s)	Dell S2721DGF
Case	NR 200
Power Supply	CORSAIR SF750
Mouse	Logitech G PRO
Keyboard	Meletrix Zoom 75 GT Silver
Software	Windows 11 22H2

System Name	A bomb
Processor	AMD Ryzen 7 3700X
Motherboard	MSI B450 Gaming Plus
Cooling	Corsair H115i PRO + 4x Noiseblocker eLoop push-pull
Memory	2x8GB G.Skill TridentZ 3600MHz 19CL @ 16-20-20-36
Video Card(s)	MSI GTX1060 3GB Gaming X
Storage	Intel 660p 1TB QLC NVMe SSD (yeah, it's really that slow) + Seagate Exos 10TB HDD
Display(s)	AOC C24G1 24" FullHD 144Hz VA
Case	Phanteks P400S + P400A mesh panel + 2x140mm & 1x120mm be quiet! Shadow Wings 3 + 1x120mm Noctua NF-F
Audio Device(s)	Corsair HS50
Power Supply	Corsair RMx v2 (2018) 750W
Mouse	Corsair Harpoon RGB Wireless in wired mode (wireless mode is bugged ...)
Keyboard	A4Tech generic-ish membrane office keyboard (yikes)
Software	Windows 10 x64 1909
Benchmark Scores	OVER 9000