ANTEC Power Supply EA-430D - Suddenly dead!

[Advall]

This PS is about 6 years old and suddenly died.

A 3300 uF 6.3 V cap is swollen and had brown gunge in the cross channels

It is a CapXon product - GL 105 deg C series.

Could this be the reason for sudden and complete failure?

All, other caps look OK.

Is a Nippon Chemi-Con KMG series Cap of the same basic specification and size a suitable replacement?

I appreciate any help.

[Per Hansson]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

It depends, if it's for the 5VSB supply then yes it might be the reason.
But how have you verified if it is completely dead?
I.e. do you have 5VSB on the green wire?
Some pics might help...
P.S: Moved your thread...

[jazzie366]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

This PS is about 6 years old and suddenly died.

A 3300 uF 6.3 V cap is swollen and had brown gunge in the cross channels

It is a CapXon product - GL 105 deg C series.

Could this be the reason for sudden and complete failure?

All, other caps look OK.

Is a Nippon Chemi-Con KMG series Cap of the same basic specification and size a suitable replacement?

I appreciate any help.

Considering that this is a 3300uF cap that's 6.3V, it's probably the 5VSB rail, and in reply to Per Hansson, usually the 5VSB rail has one large cap to smooth it, not multiples like the 5v and 12v rails have.

Also considering this is an EarthWatts (which is usually good compared to VP series) it's probably not special. Now, this could be something else, but pics would be great for confirmation.

As for the NCC cap you mentioned, KMG is not good for this application, get something like KZM, a low ESR cap, not a standard use. KZM for long life and super low impedance. I'd recommend the KZM as it's long life. Also, if the primary capacitors are Teapos, I've had nothing but trouble with those, and if I were you I'd replace them.

Good luck and happy capping.

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

It depends, if it's for the 5VSB supply then yes it might be the reason.
But how have you verified if it is completely dead?
I.e. do you have 5VSB on the green wire?
Some pics might help...
P.S: Moved your thread...

The computer does not fire-up the fan is not working. There is no voltage on the green wire and shorting this to a black wire does nothing.

Please advise what pictures you would like.

Many thanks.

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

Considering that this is a 3300uF cap that's 6.3V, it's probably the 5VSB rail, and in reply to Per Hansson, usually the 5VSB rail has one large cap to smooth it, not multiples like the 5v and 12v rails have.

Also considering this is an EarthWatts (which is usually good compared to VP series) it's probably not special. Now, this could be something else, but pics would be great for confirmation.

As for the NCC cap you mentioned, KMG is not good for this application, get something like KZM, a low ESR cap, not a standard use. KZM for long life and super low impedance. I'd recommend the KZM as it's long life. Also, if the primary capacitors are Teapos, I've had nothing but trouble with those, and if I were you I'd replace them.

Good luck and happy capping.

Please advise what pics you would like.

I am not sure what are "primary capacitors" Are they the ones close to the mains input where they are about 8 small caps close together?. I am not sure about the manufacturer of the other caps without removing. .

Thank you for your advice re KMG and KZM.

Many thanks

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

It depends, if it's for the 5VSB supply then yes it might be the reason.
But how have you verified if it is completely dead?
I.e. do you have 5VSB on the green wire?
Some pics might help...
P.S: Moved your thread...

Forgot to advise that after replacing the power supply the computer booted as normal.

Thanks for moving the thread.

[Per Hansson]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

Sorry, I wrote a little too fast, I meant measure if you have 5VSB on the purple wire to ground.
http://pinouts.ru/Power/atx_v2_pinout.shtml

As for pictures take some showing the dead capacitor, and some of the others.
The bulk capacitor is the large can type one.

[jazzie366]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

Please advise what pics you would like.

I am not sure what are "primary capacitors" Are they the ones close to the mains input where they are about 8 small caps close together?. I am not sure about the manufacturer of the other caps without removing. .

Thank you for your advice re KMG and KZM.

Many thanks

Primary capacitors are the biggest ones on the board, where the AC wires go to on the board, they'll be right there with them.

The 8 small ones are the secondary capacitors.

However, pictures of both would be appreciated.

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

Sorry, I wrote a little too fast, I meant measure if you have 5VSB on the purple wire to ground.
http://pinouts.ru/Power/atx_v2_pinout.shtml

As for pictures take some showing the dead capacitor, and some of the others.
The bulk capacitor is the large can type one.

There is no voltage on the purple wire to ground. Please note the errant cap has been removed from the board.

Here are some pics. If you require others please advise.

The RIMG0816 file shows a close up of the brown errant cap placed in situ.

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

Primary capacitors are the biggest ones on the board, where the AC wires go to on the board, they'll be right there with them.

The 8 small ones are the secondary capacitors.

However, pictures of both would be appreciated.

I have just uploaded 3 pics in response to Per Hansson's last post.

Regards

[Per Hansson]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

I see several different capacitor brands, is the dead one a Samxon GL or CapXon GL?
Anyway you might get away with only replacing it and if there is any others of the same model I'd replace them too.

What you need to check is if this capacitor is related to the 5VSB circuit, to do that we need a good clear in focus picture of the underside of the PCB.
Or you can trace it yourself, the 5VSB driver seems to be a TinySwitch TNY278PN.
There are example circuits of it on the net: https://cdn.badcaps-static.com/pdfs/...b56d9fb7b3.pdf

[dmill89]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

I see several different capacitor brands, is the dead one a Samxon GL or CapXon GL?

Looks like a G-Luxon from the 2nd pic, can't really make out the series though.

Anyway you might get away with only replacing it and if there is any others of the same model I'd replace them too.

X2, Delta reached into their "capacitor grab bag" for these PSUs (the same applies to most of their "budget" models), so you'll likely find a mix of Japanese (Nichicon, Rubycon, Nippon-Chemi-Con) and Taiwanese/Chinese (L-Tec, Lelon, G-Luxon, Samaxon, Taicon) caps. The Japanese caps are likely still good, and any Taicon (Taiwanese partner of Nichicon) and Samaxon (except possibly GF series) have decent chance of still being good as well, while the L-Tec, G-Luxon and Lelon caps are probably best replaced.

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

I see several different capacitor brands, is the dead one a Samxon GL or CapXon GL?
Anyway you might get away with only replacing it and if there is any others of the same model I'd replace them too.

What you need to check is if this capacitor is related to the 5VSB circuit, to do that we need a good clear in focus picture of the underside of the PCB.
Or you can trace it yourself, the 5VSB driver seems to be a TinySwitch TNY278PN.
There are example circuits of it on the net: https://cdn.badcaps-static.com/pdfs/...b56d9fb7b3.pdf

The blown cap is a CapXon GL 3300 uF 6.3 volt.
Here is a pic of the underside of the board with the blown cap removed . Its position is marked up as BAD CAP

[pfrcom]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

I'm not power supply expert, but on premise that best way to get correct answer on Internet is to post wrong answer, my 2cents worth ...

Having zeroVSB, what you've measured from purple to ground wires, might be fixed by replacement of small capacitors in the middle, between the two heatsinks

In your first picture, first candidate may be hidden under white glue - is there a small capacitor at the place marked C9something or just C9 on the printed circuit board ?

If its replacement doesn't resuscitate 5VSB, try replacing cap that is visible in your pic

If that doesn't fix it,

But if you restore ~5VSB, power supply may well start

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

I'm not power supply expert, but on premise that best way to get correct answer on Internet is to post wrong answer, my 2cents worth ...

Having zeroVSB, what you've measured from purple to ground wires, might be fixed by replacement of small capacitors in the middle, between the two heatsinks

In your first picture, first candidate may be hidden under white glue - is there a small capacitor at the place marked C9something or just C9 on the printed circuit board ?

If its replacement doesn't resuscitate 5VSB, try replacing cap that is visible in your pic

If that doesn't fix it,

But if you restore ~5VSB, power supply may well start

I am not sure what C9 you refer to but adjacent to the purple lead there is C 953 1000 uF 10 v . I attach a sketch of the cap layout with all the information I can ascertain without cap removal.

Hope this helps and regards.

[pfrcom]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

I am not sure what C9 you refer to

Please refer to pic

FYI: https://en.wikipedia.org/wiki/Reference_designator

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

I have replaced the blown cap 3300uF 6.3 V but the supply does not fire up and no voltage of 5VSB. Any ideas?

[pfrcom]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

Any ideas?

might be fixed by replacement of small capacitors in the middle, between the two heatsinks

In your first picture, first candidate may be hidden under white glue - is there a small capacitor at the place marked C9something or just C9 on the printed circuit board ?

If its replacement doesn't resuscitate 5VSB, try replacing cap that is visible in your pic

.

[Behemot]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

That cap seems to be on +3.3V rail, that does not affect the SB not working.

[Advall]

Re: ANTEC Power Supply EA-430D - Suddenly dead!

.

I have removed the caps hidden under the white glue and they are

C951 2200uf 16v ltec
C952 22uf 50v nichicon
C953 is 1000uf 10 v nichicon and is located next to the purple +5VSB lead out wire.

They all look good.

I will have to order replacements.