Antec NeoHE430 worth buying/recapping?

[Scenic]

Re: Antec NeoHE430 worth buying/recapping?

i probably went lucky with this.
i'm the kinda guy that leaves all the windows open and just puts the computer in standby mode instead of shutting it down completely or even using a switched power strip..
(hibernation isn't really an option, as it takes forever with 6GB RAM)

so basically the 5VSB circuit has been working for months in 24/7 mode feeding my RAM while in standby.
in the current state of that PSU, it probably would have fried something (5VSB shooting through the roof) if i tried to power it up again after turning it off (to take it apart).

luckily, i didn't power it up again. otherwise both my Abit IP35P motherboard and my 6GB of DDR2 would be fried by now i guess..

and damn.. i forgot about the pics.. we had tons of rain going on here.. basement underwater and stuff..

[kleung]

Re: Antec NeoHE430 worth buying/recapping?

so, i wanted to update this thread

just picked up an old psu from a friend... but since it was a 2005/2006 antec; I decided to open it up to inspect first.

good thing i did

3 bad caps

looks like it's a seasonic made one.

just wanted to post to add pictures to the knowledge base.


PS - Voltages still good on all rails (under no load conditions) so the psu still works fine.

Will relegate to backup PSU until I get a chance to recap (if ever - so busy these days)

[technotech]

Re: Antec NeoHE430 worth buying/recapping?

If it helps, I just finished re-capping the same model PSU with the parts from Digikey. While I've replaced all caps, the ones that measured bad were the following:

3300uf 10v
2200uf 10v
2200uf 6.3v
1000uf 6.3v
220uf 16v
22uf 50v (this one was somewhere on the primary side if I remember correctly).

Additionally, the main high voltage cap was slightly off in capacitance, but I probably could have kept it.

Following the recap the PSU is working great.

[Adrian_]

Re: Antec NeoHE430 worth buying/recapping?

Raising this topic from the dead for a good cause

I'm currently scratching my head trying to figure out the original size/specs of the capacitors on the secondary side (doing some voluntary work for a social project which basically involves fixing old hardware then donating it to orphanages and so on).
Apparently the fellow who donated us this computer had the PSU "fixed" at some point by a so-called professional who replaced 3300uF caps with 2200uF and so on, therefore rendering the whole thing unusable in a rather short time.

I know it's a long shot, but does anyone remember/has relevant schematics/pictures that would allow to identify the specs for the caps on the secondary side of this PSU?
Thanks a lot for any help.

[goodpsusearch]

Re: Antec NeoHE430 worth buying/recapping?

Please post some pictures of the unit to help us help you.

[Adrian_]

Re: Antec NeoHE430 worth buying/recapping?

Sure, let me share what I've been able to find so far and what still remains to guess:

1. This cap here is a 2200uF 16v but according to my findings should be a 3300uF 16v

[Adrian_]

Re: Antec NeoHE430 worth buying/recapping?

The caps circled red by me in first and second attachments in this post have been switched between them (the one in pic 1 should be 2200uF 10V and the one in pic 2 should be 3300uF 10V, probably whoever worked on this PSU didn't made notes and removed multiple components before replacing them).
The 3300uF one is Samsung but the 2200uF one (placed where the 3300uF should have been) appears to be Russian made (??) - perhaps salvaged from some old device and probably not HF.

[Adrian_]

Re: Antec NeoHE430 worth buying/recapping?

I was unable to find any reference about the capacity and voltage that the two caps circled red in this pic should have. Maybe they ware replaced correctly but i'd rather make sure if possible.

No other caps appear to have been replaced. All those present appear physically OK but I suspect at least some of those replaced were not HF and of course those that are way below capacity are probably dead by now).

The PSU tests OK on voltages when powered on with a tester but cannot power up a working motherboard.

Thanks in advance for any help (both in validating or not my current findings and in helping me with the missing info)

[Stefan Payne]

Re: Antec NeoHE430 worth buying/recapping?

Samwha RD series? SRYSLY?!
They aren't really suitable for PSU filtering as they are General Purpose caps.

That is the problem!

Some idiot recapped the PSU who didn't know anything about caps and that there are some different types of caps...
And due to that fact the caps might already be dead because they aren't designed to take the ripple...

The capacitance of the caps isn't as relevant as most people say they are, other factors are more important...
Like Ripple Curent, ESR, especially for SMPS...

Though that doesn't matter if you use a totally wrong type of capacitors!!
And you have to put your head into Datasheets and compare the electrical values, size and so on.

By the way:
It seems like I have a similar PSU: Antec True Power Trio.
And that one uses AFAIR OST RLS and AFAIR also some RLX - wich seem to be rather low impedance ones...
So it seems you have to do the "cap job" all over again...
And also replace the filtering caps with something that comes close to the original ones...

That somehow reminds me of this thread where someone recapped a brand new Corsair VS - also with Samwha RD...
https://linustechtips.com/main/topic...caps-on-a-psu/

[Adrian_]

Re: Antec NeoHE430 worth buying/recapping?

Yes I suspected something fishy but wasn't even familiar with these Samwha caps. Do you mind having a look at your Antec TP trio and tell me which ones are OST RLS and which ones are RLX?

I'll need to figure out what's available locally and then compare dataheets and so on.

However I'm still looking to figure out the correct cap/voltage for these caps.

[goodpsusearch]

Re: Antec NeoHE430 worth buying/recapping?

Please post a topside photo of the psu.

I have recapped Antec True Power II 380W and Antec Smart Power 450W several years ago and they are working great.

Stefan Payne is correct about the uF of the caps originally installed. There is no need to replace them with caps of the same uF.

My Antec True Power II 380W came with 4700uF 10V capacitors with 10mm diameter. It is impossible to find good 4700uF caps with 10mm diameter.

Usually when recapping Antec psus from that age I follow this rule:

3.3V: 2x3300uF 6.3V* d10mm

5V: 2x3300uF 6.3V* d10mm

12V: 2x3300uF 16V d12.5mm**

The "grade" of the caps needs to be low esr but not too low, motherboard grade capacitors should be avoided or you are going to get a whining psu (several videos available on YouTube)

I used Panasonic FK (excellent caps for that application but expensive and difficult to find in stock), Panasonic FM/FR and many members of badcaps community have used Samxon RS with success, available at badcaps.net online store. May also want to ask Behemot, he stocks 10mm diameter caps that are ideal for crammed psus like that.

Momaka has a list of suitable caps for the majority of power supplies, I hope he reposts it here.

*6.3V for 3.3V and 5V rails is 100% safe, but it doesn't hurt if you manage to find suitable 10V caps.

**Fitting 12.5mm caps wont be easy, but back at that time I wasn't able to find 10mm 16V 3300uF caps with suitable esr for that psu. I could get away with 2x200uF but I chose not to downgrade C of 12V rail.

More info:
https://www.badcaps.net/forum/showthread.php?t=8223
https://www.badcaps.net/forum/showthread.php?t=8385

[Stefan Payne]

Re: Antec NeoHE430 worth buying/recapping?

**Fitting 12.5mm caps wont be easy, but back at that time I wasn't able to find 10mm 16V 3300uF caps with suitable esr for that psu. I could get away with 2x200uF but I chose not to downgrade C of 12V rail.

That hasn't changed since then...

I haven't found a single 3300uF/16V cap in 10mm from a reputable source.
The bad thing is that you see them all the time in all kinds of PSU everywhere, those tall, 10mm 3300uF/16V types...

But even Mouser doesn't have what we need - the one they have is again a general purpose one (Nippon KMG) wich is useless for us.

It's hard enough to find a 2200uF/16V type in 10mm...

[Per Hansson]

Re: Antec NeoHE430 worth buying/recapping?

Then you have not looked hard enough Stefan

https://www.badcaps.net/forum/showthread.php?t=39123

[Adrian_]

Re: Antec NeoHE430 worth buying/recapping?

Thanks for the tips guys. I'll try to buy some 3300uF 16V 10mm caps from Behemot, problem is that this is just something I do as voluntary work for charity so I cannot purchase relevant quantities. As you may have guessed already not many people donate decent PSU's which are worth repairing.
In most cases it's like JNC or Premier or Floston crap, the money would be better spent by purchasing working PSU's in bulk from companies that dismember phased-out computers from big companies rather then purchasing quality caps to fix junk PSU's.

[Adrian_]

Re: Antec NeoHE430 worth buying/recapping?

Just a quick follow up after the package from Behemot arrived (turned out that shipping from the Czech republic to my own country wasn't really expensive):
I removed all the caps that were replaced during the previous recap job done by some idiot. Found the following:
1x Samwa RD 3300uf 10v
2x Samwa RD 2200 uF 10v
1x Daewoo RUS 2200uF 16v
1x Samwa RD 1000uF 6.3v (tiny bugger placed on a huge 10mm cap post)

I went overboard and used 4x 3300uF 16v plus a 3300uF 6.3v instead of the tiny 1000uF 6.3v. PSU Started just fine on the tester and is currently idling on some P4 in Win 7.
Except for the +5vsb which seems to run low according to AIDA (4.5v) everything else is solid. No other cap appears to be bulged or leaked so I'm not going to replace anything else unless I have to.

Attempting to use the multimeter to read the +5vsb on the mobo connector with the motherboard powered on resulted in immediate shutdown.

[Per Hansson]

Re: Antec NeoHE430 worth buying/recapping?

Attempting to use the multimeter to read the +5vsb on the mobo connector with the motherboard powered on resulted in immediate shutdown.

So maybe the result for the low reading is a poor connector.
Check the crimp of the cable to the connector and the mating of the connector itself to the mainboard.
If you have it out of the case you could even check the resistance of the cable from the origination point int he PSU to the backside of the mainboard ATX connector.

[Adrian_]

Re: Antec NeoHE430 worth buying/recapping?

It turned up to be something wrong with the old mobo I was using for the test. Tried it on another one and all the voltages are rock solid and within spec.

[Behemot]

Re: Antec NeoHE430 worth buying/recapping?

Glad it helped The on-board sensors are not to be trusted much anyway, you never know where exactly are they located (so there could be some drop on the way), sometimes they are totally off (most likely bad).

Measuring the voltage in Main ATX should be problem-free if the cables are not very think - just put one probe to molex ground and push the other one to the violet cable inside the connector plastic housing until you see something