There were some bulging caps but they were replaced and the problem was present before that.
Replace the capacitors indicated in the red square - they are in the 5VSB circuit. Note that later revisions of this design from FSP used a DM311A whereas the older revisions use the old two transistor forward circuit for the 5VSB. The crucial difference being that when the switch is powered on the older revision, the 5VSB circuit is always on and generates heat which greatly shortens these units lifespan.
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mockingbird wrote on 2024-10-01, 23:18:Replace the capacitors indicated in the red square - they are in the 5VSB circuit. Note that later revisions of this design from FSP used a DM311A whereas the older revisions use the old two transistor forward circuit for the 5VSB. The crucial difference being that when the switch is powered on the older revision, the 5VSB circuit is always on and generates heat which greatly shortens these units lifespan.
What kind of capacitors should I use? Should I try to match the ESR and ESL of the original ones as close as possible or should I use any electrolytic caps of the right size, voltage and capacity? Did FSP include any protections against the +5VSB line going rogue in the 2 transistor units?
Kvopper256 wrote on 2024-10-02, 05:25:What kind of capacitors should I use? Should I try to match the ESR and ESL of the original ones as close as possible or should I use any electrolytic caps of the right size, voltage and capacity? Did FSP include any protections against the +5VSB line going rogue in the 2 transistor units?
I can't find my notes ATM, but I do know that the two 8mm caps in the indicated area are Teapo SC -- I believe 1000uF or so... I have used anywhere from 1000uF to 1500uF for that area.
No, don't focus on ESR there... You want the highest endurance part possible. Something like this will work.
No, there are no "protections" for the 5vsb so-to-speak other than when the caps start to go, you get issues like you describe. I don't know for certain that this is your issue, but it's a good place to start.
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mockingbird wrote on 2024-10-02, 15:19:I can't find my notes ATM, but I do know that the two 8mm caps in the indicated area are Teapo SC -- I believe 1000uF or so... […]
Kvopper256 wrote on 2024-10-02, 05:25:What kind of capacitors should I use? Should I try to match the ESR and ESL of the original ones as close as possible or should I use any electrolytic caps of the right size, voltage and capacity? Did FSP include any protections against the +5VSB line going rogue in the 2 transistor units?
I can't find my notes ATM, but I do know that the two 8mm caps in the indicated area are Teapo SC -- I believe 1000uF or so... I have used anywhere from 1000uF to 1500uF for that area.
No, don't focus on ESR there... You want the highest endurance part possible. Something like this will work.
No, there are no "protections" for the 5vsb so-to-speak other than when the caps start to go, you get issues like you describe. I don't know for certain that this is your issue, but it's a good place to start.
Will thishttps://ormix.lv/lv/catalog/item/id/35702/ work? It's easier for me to get. What replacements do you recommend for the smaller caps?
mockingbird wrote on 2024-10-02, 15:19:I can't find my notes ATM, but I do know that the two 8mm caps in the indicated area are Teapo SC -- I believe 1000uF or so... […]
Kvopper256 wrote on 2024-10-02, 05:25:What kind of capacitors should I use? Should I try to match the ESR and ESL of the original ones as close as possible or should I use any electrolytic caps of the right size, voltage and capacity? Did FSP include any protections against the +5VSB line going rogue in the 2 transistor units?
I can't find my notes ATM, but I do know that the two 8mm caps in the indicated area are Teapo SC -- I believe 1000uF or so... I have used anywhere from 1000uF to 1500uF for that area.
No, don't focus on ESR there... You want the highest endurance part possible. Something like this will work.
No, there are no "protections" for the 5vsb so-to-speak other than when the caps start to go, you get issues like you describe. I don't know for certain that this is your issue, but it's a good place to start.
You seems it be quite knowledgeable about power supplies. Can you also take a look at this Chieftec I-Arena GPA-400B8? Computers I use it with randomly restart and the problem goes away when I use another PSU. It was bought in 2016 and used until 2023 in a Core i3 4160 system with no dedicated GPU, 2 ODDs, 2 HDDs and a SATA SSD with no issues. Then I put it in a Socket 370 system with one HDD, one ODD, one 3,5" FDD and a 1 GHz Coppermine Celeron, and it was fine. Then it was in storage for several months and it went bad during that time for some reason. I tested it in said Socket 370 system and a Socket 1156 Core i3+ GT630 system and it would restart randomly. The Socket 1156 system worked fine with an older, heavier (probably passive PFC, didn't open it) despite it being somewhat more +5V heavy than a modern PSU should be.
Kvopper256 wrote on 2024-10-02, 16:58:Will thishttps://ormix.lv/lv/catalog/item/id/35702/ work? It's easier for me to get. What replacements do you recommend for the smaller caps?
Yes, that's good. What are the values of the smaller caps?
Kvopper256 wrote on 2024-10-04, 15:47:Can you also take a look at this Chieftec I-Arena GPA-400B8? Computers I use it with randomly restart and the problem goes away when I use another PSU.
If you post a list of the caps, I can help you with what to use to replace them.
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mockingbird wrote on 2024-10-06, 13:48:Kvopper256 wrote on 2024-10-02, 16:58:Will thishttps://ormix.lv/lv/catalog/item/id/35702/ work? It's easier for me to get. What replacements do you recommend for the smaller caps?
Yes, that's good. What are the values of the smaller caps?
Teapo 50V 47uF; 50V 4,7 uF; 50V 1uF.
Kvopper256 wrote on 2024-10-04, 15:47:Can you also take a look at this Chieftec I-Arena GPA-400B8? Computers I use it with randomly restart and the problem goes away when I use another PSU.
If you post a list of the caps, I can help you with what to use to replace them.
[/quote]
AiSHi 400V 180uF; 4x (could only read on 2 caps due to the radiator obstructing others but there are 2 other very similar looking caps nearby) JunFu 50v 2,2 uF; 2x JunFu 25V 220uF; 2x AiSHi 16V 1000uF; 3x (couln't read on the third one due to white glue covering the capacitance and brand but it looks virtually identical to 2 other caps) CapXon 10V 2200uF; 3x AiSHi 16V 1000uF; 2x AiSHi 16V 2200uF; 2x CapXon 100uF for fan power.
Kvopper256 wrote on 2024-10-06, 22:28:Teapo 50V 47uF; 50V 4,7 uF; 50V 1uF.
Ok, I found my notes...
there are 5 capacitors in that area."
1) 50V 4.7uF 5x11mm Teapo SEK
2) 10V 1000uF 8x20mm Teapo SC
3) 10V 1000uF 8x20mm Teapo SC
4) 50V 1uF 4x7mm Capxon SK
5) 50V 47uF 6.3x11.5mm Teapo SEK
In another unit I have OST RLG and OST RMH for 4.7uF and 1uF.
Unfortunately, the website you're ordering from doesn't have a good selection of small capacitors. I see brands that are not good quality.
Kvopper256 wrote on 2024-10-04, 15:47:Can you also take a look at this Chieftec I-Arena GPA-400B8? Computers I use it with randomly restart and the problem goes away when I use another PSU.
AiSHi 400V 180uF; 4x (could only read on 2 caps due to the radiator obstructing others but there are 2 other very similar looking caps nearby) JunFu 50v 2,2 uF; 2x JunFu 25V 220uF; 2x AiSHi 16V 1000uF; 3x (couln't read on the third one due to white glue covering the capacitance and brand but it looks virtually identical to 2 other caps) CapXon 10V 2200uF; 3x AiSHi 16V 1000uF; 2x AiSHi 16V 2200uF; 2x CapXon 100uF for fan power.
[/quote]
I will need diameters as well. You can't use Newark/Farnell or a different website? The one you posted does not have the best selection.
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mockingbird wrote on 2024-10-09, 14:33:I will need diameters as well. You can't use Newark/Farnell or a different website? The one you posted does not have the best selection.
AiSHi 400V 180uF 21mm; 4x (could only read on 2 caps due to the radiator obstructing others but there are 2 other very similar looking caps nearby) JunFu 50v 2,2 uF 5mm; 2x JunFu 25V 220uF 6mm; 5x AiSHi 16V 1000uF 8mm; 3x (couln't read on the third one due to white glue covering the capacitance and brand but it looks virtually identical to 2 other caps) CapXon 10V 2200uF 10mm; 2x AiSHi 16V 2200uF 10mm; 2x CapXon 16V 100uF 5mm for fan power.
After some Binging I found out that Farnell, DigiKey and Mouser operate in my country, so you can suggest caps from there.
Kvopper256 wrote on 2024-10-09, 15:34:AiSHi 400V 180uF 21mm; 4x (could only read on 2 caps due to the radiator obstructing others but there are 2 other very similar looking caps nearby) JunFu 50v 2,2 uF 5mm; 2x JunFu 25V 220uF 6mm; 5x AiSHi 16V 1000uF 8mm; 3x (couln't read on the third one due to white glue covering the capacitance and brand but it looks virtually identical to 2 other caps) CapXon 10V 2200uF 10mm; 2x AiSHi 16V 2200uF 10mm; 2x CapXon 16V 100uF 5mm for fan power.
After some Binging I found out that Farnell, DigiKey and Mouser operate in my country, so you can suggest caps from there.
Ok, here you go:
1) https://www.digikey.lv/en/products/detail/che … 7ME11D/10486569
2) https://www.digikey.lv/en/products/detail/rub … EFC8X16/4977107
3) https://www.digikey.lv/en/products/detail/rub … EFC8X16/4977107
4) https://www.digikey.lv/en/products/detail/rub … MEFC4X7/3562693 (this is a much better option, buy it as well, and I will tell you how to install it)
5) https://www.digikey.lv/en/products/detail/che … 0MF11D/10486540
I will get back to you on your other PSU some other time... I'm a little preoccupied with other things. Good luck.
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mockingbird wrote on 2024-10-15, 14:52:Ok, here you go: […]
Kvopper256 wrote on 2024-10-09, 15:34:AiSHi 400V 180uF 21mm; 4x (could only read on 2 caps due to the radiator obstructing others but there are 2 other very similar looking caps nearby) JunFu 50v 2,2 uF 5mm; 2x JunFu 25V 220uF 6mm; 5x AiSHi 16V 1000uF 8mm; 3x (couln't read on the third one due to white glue covering the capacitance and brand but it looks virtually identical to 2 other caps) CapXon 10V 2200uF 10mm; 2x AiSHi 16V 2200uF 10mm; 2x CapXon 16V 100uF 5mm for fan power.
After some Binging I found out that Farnell, DigiKey and Mouser operate in my country, so you can suggest caps from there.
Ok, here you go:
1) https://www.digikey.lv/en/products/detail/che … 7ME11D/10486569
2) https://www.digikey.lv/en/products/detail/rub … EFC8X16/4977107
3) https://www.digikey.lv/en/products/detail/rub … EFC8X16/4977107
4) https://www.digikey.lv/en/products/detail/rub … MEFC4X7/3562693 (this is a much better option, buy it as well, and I will tell you how to install it)
5) https://www.digikey.lv/en/products/detail/che … 0MF11D/10486540I will get back to you on your other PSU some other time... I'm a little preoccupied with other things. Good luck.
Are these ok?:
1) https://lv.farnell.com/rubycon/50yxm4r7mefc5x … v-20/dp/1281852
4) https://lv.farnell.com/rubycon/50yxj1m5x11/ca … v-20/dp/2346264 (https://lv.farnell.com/wurth-elektronik/86523 … -smd/dp/2466445 or this? How should I install it?)
5) https://lv.farnell.com/wurth-elektronik/86024 … dial/dp/2533766
The shipping from Farnell is almost 3 times cheaper than from Digikey.
Kvopper256 wrote on 2024-10-15, 17:51:Are these ok?: […]
Are these ok?:
1) https://lv.farnell.com/rubycon/50yxm4r7mefc5x … v-20/dp/1281852
4) https://lv.farnell.com/rubycon/50yxj1m5x11/ca … v-20/dp/2346264 (https://lv.farnell.com/wurth-elektronik/86523 … -smd/dp/2466445 or this? How should I install it?)
5) https://lv.farnell.com/wurth-elektronik/86024 … dial/dp/2533766The shipping from Farnell is almost 3 times cheaper than from Digikey.
For item 1, YXM is acceptable and is good quality. For 4 and 5, pick something else. Wurth re-brands Taiwanese capacitors, or at least that's the theory. For item 4, the reason I specify a 4mm SMD cap is because all the manufacturers are phasing out 4mm long-life capacitors. I have stuffed 5mm parts in that tight space, but I leave the decision to you. The SMD caps can be used as through-hole caps by bending the leads and removing the black plastic base. It's not ideal, but it works.
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mockingbird wrote on 2024-10-15, 21:41:Wurth re-brands Taiwanese capacitors, or at least that's the theory.
Where did you get that from? Can't find anything with Google.
mockingbird wrote on 2024-10-15, 21:41:For item 4, the reason I specify a 4mm SMD cap is because all the manufacturers are phasing out 4mm long-life capacitors. I have stuffed 5mm parts in that tight space, but I leave the decision to you. The SMD caps can be used as through-hole caps by bending the leads and removing the black plastic base. It's not ideal, but it works.
The SMD cap I linked is 4mm in diameter.
Should I try this one: https://lv.farnell.com/nichicon/ucw1v220mcl1g … -35v/dp/1580578 ?
Kvopper256 wrote on 2024-10-16, 07:42:Where did you get that from? Can't find anything with Google.
I said it's a theory -- I did not say it is a certainty. But it is a very good theory that is based on a convergence of truths -- truths which I will not get into for the purpose of this thread.
To be safe, stick to Nichicon, Rubycon, Chemicon, Panasonic, NIC, and Elna. All the other new brands (Kemet and Wurth, for example) should be considered unreliable because they are not tested. Needless to say, there are also established brands that do not have a good reputation (Elite, Lelon, Teapo, etc...). There are a couple of exceptions off the top of my head. Samxon and Taicon produce certain quality series, but Taicon is only good for their series that use Nichicon foil and electrolyte and the same goes for Samxon (most Samxon series should be avoided).
The fact that an old, reputable company starts selling capacitors means nothing... As I said, their products should be proven before they are trusted. A good example of this is Illinois Capacitor -- their new products should be avoided. Even though they were once a reputable manufacturer, they now just re-brand foreign-produced parts under their name. These companies have no transparency, and that's for a reason -- they're getting their merchandise from Taiwan -- which means mid-tier quality capacitors at best.
The SMD cap I linked is 4mm in diameter.
Should I try this one: https://lv.farnell.com/nichicon/ucw1v220mcl1g … -35v/dp/1580578 ?
CW is an excellent 7000 hour series - but you need 1uF in 4mm not 22uF.
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mockingbird wrote on 2024-10-16, 14:52:Kvopper256 wrote on 2024-10-16, 07:42:The SMD cap I linked is 4mm in diameter.
Should I try this one: https://lv.farnell.com/nichicon/ucw1v220mcl1g … -35v/dp/1580578 ?
CW is an excellent 7000 hour series - but you need 1uF in 4mm not 22uF.
I'll get this one then. Or do I need a 1uF specifically?
Can I get this one for 5)?
By the way, the bulging caps were replaced over 2 years ago back when I had no idea about ESR with some general-purpose Samwha capacitors. Is that ok or were the bulging green Teapos low-ESR?
Kvopper256 wrote on 2024-10-16, 17:37:
You want to use 2.2uF for a 1uF capacitor? It may work, it may not. I have no clue. The YXJ for number 5 is fine.
No, Samwha general purpose is not ok for the bulging green caps (Which were Teapo SC). Yes, Teapo SC is low ESR.
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mockingbird wrote on 2024-10-20, 02:03:Kvopper256 wrote on 2024-10-16, 17:37:You want to use 2.2uF for a 1uF capacitor? It may work, it may not. I have no clue. The YXJ for number 5 is fine.
No, Samwha general purpose is not ok for the bulging green caps (Which were Teapo SC). Yes, Teapo SC is low ESR.
That Wurth cap is the be the best at Farnell that's not out of stock. OR should I get this THT Rubycon instead? What kind of ESR values should I look for? I need to replace 2x 16V 2200uF caps. Also, apparently the 10V caps I used were low-ESR (Samwha WL), so I don't need to replace them, right? Or shoud I replace them with caps that fit into the space better (the current ones are too wide)?
Kvopper256 wrote on 2024-10-20, 10:57:That Wurth cap is the be the best at Farnell that's not out of stock. OR should I get this THT Rubycon instead?
Yes, get that Rubycon, and try to stuff it in instead of the 4mm cap. I think I did that with these units. But also buy this, and bend the leads to make it a through-hole capacitor in case you cannot get the 5mm part to fit.
What kind of ESR values should I look for? I need to replace 2x 16V 2200uF caps. Also, apparently the 10V caps I used were low-ESR (Samwha WL), so I don't need to replace them, right? Or shoud I replace them with caps that fit into the space better (the current ones are too wide)?
Yes, use 10mm wide parts if 12.5mm is too wide. For ESR and ripple valued, you need to match or exceed the originals. So for example, Teapo SC parts in a 10x25mm diameter have a ripple rating of around 1400mA and an ESR of approximately 40 mOhm. Find the part you are considering, and look up the spec in its datasheet to see if it's adequate. If the datasheet says "general purpose" at the title, then it's not what you're looking for.
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mockingbird wrote on 2024-10-15, 14:52:I will get back to you on your other PSU some other time... I'm a little preoccupied with other things. Good luck.
BTW, can you take a look at this too? I found replacements for Samyoungs but not for the "funnier logo with a smaller circle in it" brand.
