Fortron FSP-ATX-400PNF

**willawake** · 01-12-2007, 04:45 AM

I am using these for replacements in the office.

dual rail 12v which is not exactly what i need though

Passive pfc

**willawake** · 01-12-2007, 04:48 AM

**willawake** · 01-12-2007, 04:50 AM

jamicon, teapo, capxon

last one. 20+4 atx

davmax · 01-12-2007, 08:14 PM

I see this PS has plenty of Teapo caps and Jamicon 3300u 10V. I would be rather sus of the latter caps. The old trick of using low grade caps uprated from 6.3V to 10V.

**willawake** · 01-13-2007, 05:46 AM

Quote:

The old trick of using low grade caps uprated from 6.3V to 10V.

well its a pretty common trick though, especially in PSUs.

bgavin · 02-13-2007, 08:35 AM

If one wanted to measure a PSU suspected of doing this, is it simply a matter of measuring the voltage across the cap in question while power is applied?

Or is there a surge voltage that isn't apparent with this method?

**willawake** · 02-13-2007, 09:09 AM

there is 3.3v, 5v and 12v rails, why would you need to measure?

bgavin · 02-13-2007, 01:49 PM

To see if a 6.3v good quality cap is sufficient where they are using a cheap 10v cap.

I see many mentions of where caps of higher voltage are used without an underlying requirement.

Daijoubu · 03-15-2007, 10:43 PM

Mine have OSTs for the big ones and the ball bearing version of the Yate Loon fan (D12BH-12)

Daijoubu · 03-19-2007, 09:33 PM

Has no PFC too (I'm in Canada)

Big Pope · 03-22-2007, 10:24 PM

willawake,

Would you tell me the value capacitance and diameter of large can input caps(Teapo)?

**willawake** · 03-25-2007, 04:01 AM

they are Teapo LXK 820uf 200v.
looking at the spec sheet they would be either 25x30 or 35x30. I will pull the psu to check, when i can.

Big Pope · 03-27-2007, 10:31 AM

Quote:

Originally Posted by willawake

they are Teapo LXK 820uf 200v.
looking at the spec sheet they would be either 25x30 or 35x30. I will pull the psu to check, when i can.

Thanks, because i want to replace it with Samxon EP series for testing, so i need to know the diameter first.

**kc8adu** · 03-27-2007, 06:12 PM

watch for those 25v caps to be on the -5 and -12.
they are filters before the regulator ic for the 2 lines.
since supply has to be well above the target for the common 78xx and 79xx a 16v cap wont do and give any headroom.

skafiskafnjak · 04-07-2007, 11:51 PM

I am using these power supplies in all my custom built PC's for a long time and never had any problem with them.

mzperx · 10-18-2010, 05:28 PM

I have 2 of these PSU laying around with bad caps. One of the 2 CAPs in the middle (Teapo 1000uF 10V) are dead on both.

I wonder if it originates from the capacitor quality or maybe the motherboard what it worked with killed it.. (I found these)

I would change them, but I have only 1 such capacitor in my inventory but that has greated diameter, or I have some (a lot) nichicon 1000uF 6.3V caps.. oh and a Jee 1000uF 16V.
Jee is low quality as I read, but maybe it is oversized enough not to die?

Also would it be enough to change 1 cap on both, or both caps since they are identical, and I guess the other can fail as well?

momaka · 10-18-2010, 11:41 PM

Quote:

Originally Posted by mzperx

I have 2 of these PSU laying around with bad caps. One of the 2 CAPs in the middle (Teapo 1000uF 10V) are dead on both.

I wonder if it originates from the capacitor quality or maybe the motherboard what it worked with killed it.. (I found these)

I would change them, but I have only 1 such capacitor in my inventory but that has greated diameter, or I have some (a lot) nichicon 1000uF 6.3V caps.. oh and a Jee 1000uF 16V.
Jee is low quality as I read, but maybe it is oversized enough not to die?

Also would it be enough to change 1 cap on both, or both caps since they are identical, and I guess the other can fail as well?

JEE is really bad, don't bother using it. The Nichicons are much better and should work fine (if they are the right series, of course, such as PW, PM, and HE), even though they are rated for a lower voltage. The original caps are rated for 10v, which means they cannot be placed on the 12v rail, only on the 3.3v, 5v rail, or 5vsb.
Thus 6.3v and 10v caps are *generally* interchangeable in PSUs.

shovenose · 10-18-2010, 06:03 PM

fsp is a decent psu oem, but the love crap caps!

weirdlookinguy · 10-18-2010, 07:42 PM

Quote:

Originally Posted by shovenose

fsp is a decent psu oem, but the love crap caps!

Actually, they've really gone downhill and put out a lot of junk in the past few years.

c_hegge · 10-18-2010, 10:46 PM

Personally, I'd be replacing all of the secondary caps if I had one of these. Jamicon are pure junk, right down there with Fuhjyyu and Sacon. El-cheapo Teapo are marginally better, but not much. I see lost of PSUs with failed teapos. I wouldn't be too worried about the primaries, though, as they rarely fail in any PSUs.

01-12-2007, 08:14 PM	#4
davmax Badcaps Veteran Join Date: Dec 2005 City & State: Perth Western Australia Posts: 886	Re: Fortron FSP-ATX-400PNF I see this PS has plenty of Teapo caps and Jamicon 3300u 10V. I would be rather sus of the latter caps. The old trick of using low grade caps uprated from 6.3V to 10V. __________________ Gigabyte EP45-DS3L Ultra Reliable (Power saver) Intel E8400 (3000Mhz) Bios temps. 4096Mb 800Mhz DDR2 Corsair XMS2 4-4-4-12 160Gb WD SATAII Server grade Nvidia 8500GT 256Mb 160Gb WD eSATAII Server grade for backup. Samsung 18x DVD writer Pioneer 16x DVD writer + 6x Dual layer 33 way card reader Windows XP Pro SP3 Thermaltake Matrix case with 430W Silent Power 17" Benq FP737s LCD monitor HP Officejet Pro K5300 with refillable tanks

02-13-2007, 08:35 AM	#6
bgavin Badcaps Veteran Join Date: Jan 2007 City & State: Orangevale, CA Posts: 1,350	Re: Fortron FSP-ATX-400PNF If one wanted to measure a PSU suspected of doing this, is it simply a matter of measuring the voltage across the cap in question while power is applied? Or is there a surge voltage that isn't apparent with this method?

02-13-2007, 09:09 AM	#7
willawake Super Modulator Join Date: Nov 2003 City & State: Αθήνα Posts: 7,971	Re: Fortron FSP-ATX-400PNF there is 3.3v, 5v and 12v rails, why would you need to measure?

02-13-2007, 01:49 PM	#8
bgavin Badcaps Veteran Join Date: Jan 2007 City & State: Orangevale, CA Posts: 1,350	Re: Fortron FSP-ATX-400PNF To see if a 6.3v good quality cap is sufficient where they are using a cheap 10v cap. I see many mentions of where caps of higher voltage are used without an underlying requirement.

03-15-2007, 10:43 PM	#9
Daijoubu New Member Join Date: Mar 2007 Posts: 5	Re: Fortron FSP-ATX-400PNF Mine have OSTs for the big ones and the ball bearing version of the Yate Loon fan (D12BH-12)

03-22-2007, 10:24 PM	#11
Big Pope Approved Vendor Join Date: Dec 2005 City & State: Hong Kong Posts: 380	Re: Fortron FSP-ATX-400PNF willawake, Would you tell me the value capacitance and diameter of large can input caps(Teapo)? __________________ My SAMXON Capacitors Database HERE!! X-CON is a new brand for SAMXON's Polymer Capacitors.

03-25-2007, 04:01 AM	#12
willawake Super Modulator Join Date: Nov 2003 City & State: Αθήνα Posts: 7,971	Re: Fortron FSP-ATX-400PNF they are Teapo LXK 820uf 200v. looking at the spec sheet they would be either 25x30 or 35x30. I will pull the psu to check, when i can.

03-27-2007, 06:12 PM	#14
kc8adu Super Moderator Join Date: Nov 2003 City & State: dayton ohio Posts: 6,433	Re: Fortron FSP-ATX-400PNF watch for those 25v caps to be on the -5 and -12. they are filters before the regulator ic for the 2 lines. since supply has to be well above the target for the common 78xx and 79xx a 16v cap wont do and give any headroom.

04-07-2007, 11:51 PM	#15
skafiskafnjak New Member Join Date: Aug 2006 City & State: Canada Posts: 14	Re: Fortron FSP-ATX-400PNF I am using these power supplies in all my custom built PC's for a long time and never had any problem with them.

10-18-2010, 05:28 PM	#16
mzperx New Member Join Date: Oct 2010 Posts: 4	Re: Fortron FSP-ATX-400PNF I have 2 of these PSU laying around with bad caps. One of the 2 CAPs in the middle (Teapo 1000uF 10V) are dead on both. I wonder if it originates from the capacitor quality or maybe the motherboard what it worked with killed it.. (I found these) I would change them, but I have only 1 such capacitor in my inventory but that has greated diameter, or I have some (a lot) nichicon 1000uF 6.3V caps.. oh and a Jee 1000uF 16V. Jee is low quality as I read, but maybe it is oversized enough not to die? Also would it be enough to change 1 cap on both, or both caps since they are identical, and I guess the other can fail as well?

10-18-2010, 06:03 PM	#18
shovenose 404 Not Found Join Date: Aug 2010 City & State: Fairfax, California My Country: USA Line Voltage: 120VAC 60Hz I'm a: Forum Junkie Posts: 3,494	Re: Fortron FSP-ATX-400PNF fsp is a decent psu oem, but the love crap caps! __________________ Firefox is named after a fox - WRONG! That orange thing is a Red Panda, not a fox!! http://www.youtube.com/watch?v=y6GaPkkGZGw

10-18-2010, 10:46 PM	#20
c_hegge Unknown Join Date: Sep 2009 City & State: North Coast, NSW My Country: Australia Line Voltage: 240V 50Hz I'm a: Professional Tech Posts: 3,354	Re: Fortron FSP-ATX-400PNF Personally, I'd be replacing all of the secondary caps if I had one of these. Jamicon are pure junk, right down there with Fuhjyyu and Sacon. El-cheapo Teapo are marginally better, but not much. I see lost of PSUs with failed teapos. I wouldn't be too worried about the primaries, though, as they rarely fail in any PSUs. __________________ I love putting bad caps and flat batteries in fire and watching them explode!! Main PC: Core i5 660 3.33GHz, Gigabyte GA-P55-UD3R, 4GB Kingston DDR3 1333, 750GB WD HDD, Sony Optiarc DVD RW, nVidia GTX295 1760MB, Antec 1200 Case, Delta DPS-750CB 750W PSU, Hauppauge TV Tuner, Windows XP Pro. Main Laptop: Lenovo Thinkpad T60: Core 2 T2500 2GHz, 2GB DDR2, 80GB HDD, DVD RW, Intel Graphics, Windows XP Pro. 2nd Laptop: Toshiba Satellite A200: Core Duo 1.73GHz, 2GB DDR2, 60GB HDD, DVD RW, nVidia GF Go 7300 Graphics, OpenSUSE 12.2, Fan Mod

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