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**Behemot** · 07-02-2015, 10:26 AM

Re: Tagan TG480-U01 480W ATX PSU

Generaly I would use such only in high power and/or modern units with higher switching frequencies (especially these resonant and other modern topologies). Most caps in older units have way higher ESR/lower current and it may start oscillating.

I guess Nichicon means these new designs - definitelly not to replace bad caps in decade old design.

**Majestyk** · 07-02-2015, 12:23 PM

Re: Tagan TG480-U01 480W ATX PSU

Yea, but that´s all assumptions that might apply here or might not. We do not have the schematics of most PSUs and we do not know, what the developers' intentions and calulations have been.

From a more superficial point of view the design of the secondary side of a 2008 PSU doesn´t differ too much from one built in 2012. Many designers seem to be quite conservative here.

But, as Karl Marx said "When theory and practice don´t match, practice rules".

I for one have encountered no oscillations so far when very Low ESR caps were used for secondary filtering but I wouldn´t try polymers though.

If someone has made different observations they would be welcome to report them here. The bigger the test the better the results.

**Behemot** · 07-02-2015, 12:38 PM

Re: Tagan TG480-U01 480W ATX PSU

I better play it safe and use caps on the higher side of ESR…Chemi-Con KZN is the furthest I go, and those mostly also in case of 1500/6,3 caps (or those custom 3300/16).

**Stefan Payne** · 07-03-2015, 03:59 PM

Re: Tagan TG480-U01 480W ATX PSU

Were you able to test the efficiency?
How bad is it?
Under 70% or just over 70%?

**Pentium4** · 07-04-2015, 01:38 PM

Re: Tagan TG480-U01 480W ATX PSU

Originally posted by Stefan Payne View Post

Were you able to test the efficiency?
How bad is it?
Under 70% or just over 70%?

You know, just cause it's old doesn't mean it's absolutely terrible. This is a good platform. c_hegge reviewed one and it was basically 80 Plus on 230V.
http://www.hardwareinsights.com/wp/g...saf450-review/

The ripple was high probably because those crappy Fuhjyyu capacitors were already failing.

**Stefan Payne** · 07-05-2015, 02:19 PM

Re: Tagan TG480-U01 480W ATX PSU

Doesn't mean this one is as efficient as the global win one.

I've seen many reviews of the Topower P4 and P5 Plattform. And the seem to range between about 65% efficiency and maybe lower 70%. Something like 72%.

Here some Topower P4/P5 ones:
http://www.planet3dnow.de/artikel/ha...l2005/51.shtml
http://www.planet3dnow.de/artikel/ha...l2005/53.shtml
http://www.planet3dnow.de/artikel/ha...l2005/25.shtml

And two P6:
http://www.planet3dnow.de/artikel/ha...klasse/7.shtml
http://www.planet3dnow.de/artikel/ha...lasse/39.shtml

Oh and one of the first (or even the first??) fully modular PSUs:
http://www.planet3dnow.de/artikel/ha...ii/index.shtml
The irony is that that company doesn't really do fully modular, except for the Power Zone ones X-D

Another interesting detail:
be quiet/Revoltec and Tagan were only about 15km away...
Well, Enermax (Germany) is also in that area as is Silverstone and Seasonic...

**kaboom** · 07-05-2015, 02:30 PM

Re: Tagan TG480-U01 480W ATX PSU

Originally posted by Pentium4 View Post

You know, just cause it's old doesn't mean it's absolutely terrible.

Not that again...

Originally posted by Pentium4 View Post

The ripple was high probably because those crappy Fuhjyyu capacitors were already failing.

Thank you. Oh, the phrase "crappy Fuhjyyu" is redundant.

**Pentium4** · 07-05-2015, 04:26 PM

Re: Tagan TG480-U01 480W ATX PSU

Originally posted by Stefan Payne View Post

Doesn't mean this one is as efficient as the global win one.

I've seen many reviews of the Topower P4 and P5 Plattform. And the seem to range between about 65% efficiency and maybe lower 70%. Something like 72%.

Here some Topower P4/P5 ones:
http://www.planet3dnow.de/artikel/ha...l2005/51.shtml
http://www.planet3dnow.de/artikel/ha...l2005/53.shtml
http://www.planet3dnow.de/artikel/ha...l2005/25.shtml

Oh, I see. I do know that a lot of the older ones only used two 10A ultra fasts on the 12V. That would be why the efficiency was so much lower. I wonder how the global win would have been on efficiency if it had two 30 or even 20A schottkys on the 12V instead of ultra fasts.

Originally posted by kaboom View Post

Not that again...

At least I try?

Thank you. Oh, the phrase "crappy Fuhjyyu" is redundant.

Ah, yes.

**ep9es** · 07-24-2015, 07:57 PM

Re: Tagan TG480-U01 480W ATX PSU

Hello.
I have a Tagan TG480-U01 (Topower) from 2004 and a Gigabyte GE-R460-V1 (FSP 400W).
I cleaned the Tagan psu in 2007 with compressed air , the fan began to turn at least 4000-5000-6000 rpm ( max in this fan is 1800 rpm), I was happy
because I thought it was going to be very clean, but when finished cleaning I note that it smelled of burning.
Logical, I had spun the fan so it had generated electricity, even too much.
Worried, I turned on the computer , it went on but I noticed that the external fan was not spinning. But the computer went ok.
If I pushed a bit of a fan blade, it began to turn, but there were times it stopped and I could not always be aware of pushing for reacting .
It was so for a few months until one day stopped working and as I had no time to research how to fix it, I decided to buy a new PSU Gigabyte GE-R460-V1 (FSP 400w ).

Actually I'm using the Gigabyte (FSP) in my desktop but 3-4 weeks ago when I turned it on, it started to smoke so a I quickly I turned off. I looked

through the grid and saw the plastic wrap from above the primary cap was burned but did not seem that the capacitor had burst and released liquid on

top.
Cross the fingers and try to light on to see what happened (could have fried the computer easily).
Until today I have the desktop 24/7 and do not want to turn it off because I understand or think the time that which suffers most the primary condenser

is at startup (from off) and not being on.
I know that my behavior is unconscious and I'm playing Russian roulette with my computer but I want to repair it ASAP.
The primary cap is a OST serie SPS 270uf 400VDC 85ºC 30x35mm(DxH) Ripple(120Hz 85ºC)=1.70
http://www.ost.com.tw/products_ec_list.asp

I thought replace it with this one:
Panasonic serie TS-ED EETED2G271DA 270uf 400VDC 105ºV 30x35mm(DxH) Ripple(120Hz 105ºC)=1.56 ESR(120Hz 20ºC)=0.491
https://cdn.badcaps-static.com/pdfs/...b77415dbfa.pdf

I was making the order for this capacitor when I found in this forum a thread of the same model from the other psu that I have completely broken, Tagan
TG480-U01 (Topower).
So I'll wait a few days to also buy caps for both.

Photos are from Gigabyte (FSP), primary cap

Attached Files

**stj** · 07-24-2015, 08:16 PM

Re: Tagan TG480-U01 480W ATX PSU

that cap has got VERY hot,
there may be other problems that caused it.

you should check the mains rectifier.

**ep9es** · 07-24-2015, 08:58 PM

Re: Tagan TG480-U01 480W ATX PSU

Thanks stj for your quick answer to a newbie.

I'm writing now from the desktop with this psu (Gigabyte-FSP).

I only have a multimeter, no oscilloscope.

Now I'll search in google how to check the mains rectifier.

These are the voltages that motherboard shows.
Maybe the VRM in the motherboard is doing a hard job stabilizing bad voltages from the PSU.

Repeat from my last post, "I know that my behavior is unconscious and I'm playing Russian roulette with my computer"

Attached Files

**stj** · 07-24-2015, 10:03 PM

Re: Tagan TG480-U01 480W ATX PSU

does your multimeter have a diode-test ?

**ep9es** · 07-24-2015, 10:52 PM

Re: Tagan TG480-U01 480W ATX PSU

Checked diode function. (no desoldered, checked in circuit)

You're right about the bridge rectifier.

No diode between +pin/ACpin and NO diode between -pin/ACpin (check in both senses)

Only continuity between -pin and the screw

How is it possible this psu can works now??

Then I must replace the primary cap and the bridge rectifier.
Do I replace the same rectifier or do you recommend me an equivalent/similar??

Thanks

Attached Files

**stj** · 07-25-2015, 12:37 AM

Re: Tagan TG480-U01 480W ATX PSU

i recomend you test it off the board.

**ep9es** · 07-25-2015, 02:30 AM

Re: Tagan TG480-U01 480W ATX PSU

Well, I'm stupid

I was using in the multimeter the continuity scale(200R) but not the diode scale (2KR).

I desoldered the rectifier.

If the pins are like this - ac1 ac2 + , and the multimeter cables are Red(R) and Black(B), the measures are:
-(R) ac1(B) 0.55
-(R) ac2(B) 0.55
-(R) +(B) 1.241

+(B) ac2(R) 0.544
+(B) ac1(R) 0.544
+(R) -(B) infinite

ac1(R) ac2(B) infinite
ac1(B) ac2(R) infinite

Other combinations, also infinite.

Then, Is it ok??

I will wait your answer to solder it again into the board.

Thanks

**Behemot** · 07-25-2015, 03:36 AM

Re: Tagan TG480-U01 480W ATX PSU

PFC coil looks good.

Just replace ALL caps and stop using that thing with bloated primary cap for gods sake!!! Switchers must be overloaded like hell and I don't want to see that ripple.

**ep9es** · 07-25-2015, 04:13 AM

Re: Tagan TG480-U01 480W ATX PSU

Originally posted by Behemot View Post

PFC coil looks good.

Just replace ALL caps and stop using that thing with bloated primary cap for gods sake!!! Switchers must be overloaded like hell and I don't want to see that ripple.

Thanks for your advice.

Of course, I want to replace the primary cap, and because you recommend me also replace ALL caps.

They're not bloated and now I'm checking them using a digital multimeter:
http://www.electricaltechnology.org/...h-digital.html

This psu is a FSP one, but I also have a Tagan 480w to replace all the caps (Fuhjyyu) except may be primary ones (Panasonic).

This thread is about Tagan psu. In the next post I want to explain you the caps that are broken in Tagan one and what caps to replace them (Panasonic).

Because shipping cost, I would like to make only 1 order to the eshop for caps and other components (is it the bridge rectifier ok? ).

Now the psu components are cold, so is it dangerous to switch on using this bloated primary cap?

Thanks

**Behemot** · 07-25-2015, 04:25 AM

Re: Tagan TG480-U01 480W ATX PSU

It is FSP GLN platform, the caps will fail so just replace them right away and you will be OK.

I can supply you with caps, got D8 especially for these platforms. Also suggest checking/replacing the diodes in stand-by curcitry, they often use GP 1N4007 instead of fast diodes.

**ep9es** · 07-25-2015, 05:53 AM

Re: Tagan TG480-U01 480W ATX PSU

Originally posted by Behemot View Post

It is FSP GLN platform, the caps will fail so just replace them right away and you will be OK.

I can supply you with caps, got D8 especially for these platforms. Also suggest checking/replacing the diodes in stand-by curcitry, they often use GP 1N4007 instead of fast diodes.

I'll look at the characteristics of the other capacitors (fortunately in this FSP psu are few).

This thread is about Tagan TG480-U01, and I have one broken.

When I took and opened, I thought: "Wow, it's heavier than the FSP and (for me) very well built. It seems semi-passive!! "

I had read some people say that Topower not be in the highest level psu's, but I think is enough.

In the Tagan psu I found these caps:
- PFC board: broken 1x Fuhjyyu MK 22uf 400v 85ºC
- Primary: OK 2x Panasonic 680uf 200v 85ºC
- Secondary: want to replace
2x Fuhjyyu P7 1000uf 10v 105ºC
2x Fuhjyyu P10 4700uf 10v 105ºC
2x Fuhjyyu TMR AA10 2200uf 10v 105ºC
1x Fuhjyyu TMR AA09 3300uf 16v 105ºC
2x Fuhjyyu P7 470uf 16v 105ºC

Apart from these, I see more little capacitors, they seem ok, not bloated and are difficult to access.

Seeing the specifications of these capacitors I think I can't use repeated capacitors because they have different capacitances .
That is, I think I'll have to replace them with others with the same capacity and perhaps higher voltage.

Behemot, your eshop is HV World, no??

Attached Files