3 power supplies from the past

[goodpsusearch]

The following power supplies were made in 2001-2003. They all have a P4 connector but they are 5V heavy. Let's talk about the HEC first:


Herolchi Electronic Corporation HEC-250LR-PT

First impression is that the case is sturdy and heavy. When I opened it I was impressed about the PPFC mounting on the case. The pcb insulator from case is also thick and black colored and feels better compaired to the thin cheap insulator we find in later power supplies (or there isn't one at all!).

The fan is a typical sleeve bearing Globe Fan rebranded as Hec. I oiled it with Singer sewing machine oil. The fan is temp controlled by the psu.

The PPFC of course is not fake.

The input filter is complete, including the movs.

It's a typical half bridge psu, with DBL494 pwm controller and DBL339 for UVP OVP.

The primary section includes a PBL405 bridge rectifier, 2x470uF 200V Capxon capacitors (their capacity is in specs) and 2x 2SC2625. All of them more than good for 250W continuous.

The main transformer is ERL 35. The 5vsb transformer is good for 2A.

Btw the 5vsb circuit is not the typical 2 transistor circuit. It features a TOP222Y "TOPSwitch-II Family Three-terminal Off-line PWM Switch". Is this something like the DM311?

The secondary section:

3.3V: S15D40C TO-247 but only 15A capable

5V: 2x SBL3040PT for a total 60A support at 5v

12v: S20C60 20A, very good for a 2001 250W psu!

Output filtering:

3.3V: 1x470uF 25V Capxon KM, coil in series and 1x 2200uF 16V JPCE-TUR

12V: 1x2200uF 16V Fuhjyyu TMR bulging, no coil

5V: 3 caps in parallel!
1x3300uF 10V Fuhjyyu TMR, 2x 1000uF 16V Fuhjyyu TNR one of them bulging.

The psu works. I would like to recap it.

[mariushm]

Re: 3 power supplies from the past

Yes, it's similar to DM311 or TNY277 .. switching regulators with integrated mosfet .. see datasheet here: https://cdn.badcaps-static.com/pdfs/...b7a17963fc.pdf

[goodpsusearch]

Linkworld LPH6-300W

This is the best Linkworld I have seen. 100% capable of doing its label ratings.

The case is the shinny cheap metal case Linkworld loves to use.

The typical sleeve bearing Globe Fan is here too and was partially seized. I oiled it with Singer sewing machine oil and it came back. The "fan controller" is a thermistor in series with the fan, typical Linkworld design again. As a result of this, the power supply was completely covered in dust. What you see in the pictures is the cleaned up version of it.

Full input filter, including movs.

No PFC of any kind.

The primary consists of KBU606 6A bridge rectifier, 2x (not fake) 680uF 200V Capxon capacitors and 2x Fairchild E13009L TO-3P NPN switching transistors.

Main transformer is ERL 35. The 5vsb transformer is EEL-19.

This psu doesn't have the typical 2 transistor circuit, as it uses a Fairchild 1H0265R Power Switch(FPS). I don't know if that means 5vsb is safe from failing or overvolting, but it's interesting to see that very old psus went a level higher from CWT motherboard killer Antec psus.

The PWM controller is KA7500B, there is no supervisor IC on that psu..

3.3V: 1xSBL2040CT 2x2200uF 10V Fuhjyyu TN

5V: 1x MBR4045PT 1x4700uF(!) 10V Fuhjyyu TN, 1x3300uF 10V can't remember brand and series

12V: 1xBYW51200 20A, 1x2200uF 16V "Low esr" CS bulging

All the output rails have pi coils including 5vsb and negative voltage rails -5V -12V.

Please notice the length of the 12V and 5Vsb output coils. They are the biggest output coils I have seen in smps.

I already replaced the bulging capacitor with 3300uF 16V and tested the psu with a Pentium 3GHZ Prescott Nvidia 6600GT and it didn't oscillate and all the voltages remained in specs. 12V didn't go lower than 11.74V in torture tests.

[goodpsusearch]

Jou Jye Electronic TA-300CE

Jou Jye psus are decent power supplies, usually quite overbuilt, some reviewers have proved they can do more than the label ratings, with voltages and ripple remaining in specs. Unfortunately, some design glitches tend to make them fail prematurely.

This power supply is not an exception. Nearly every single output capacitor has failed.. They used some kind of glue (I think it may be the bad one that gets conductive) all over the psu, making minimum load resistors and other hot parts conduct their heat to the nearby capacitors. There is heat discoloration that covers a large area of PCB.

5vsb is ok, but when shorting GREEN to ground, only the 3.3V rail shows some kind of activity for a second. It's highly possible that the 5V/12V group regulation toroid coil is the culprit, as it looks burnt to me anyway.

Once again, the typical sleeve bearing Globe Fan is used and it has started going bad. I oiled it with Singer sewing machine oil and the noise disappeared. The fan controller is the attached pcb on the secondary heatsink. This power supply was also covered in dust.

There is no PFC. The input filtering is good, but there are no MOVs.

The primary section consists of KBU606 6A bridge rectifier, 2x680uF 200V JunFu capacitors and 2x 2SC2625 switching transistors.

Main transformer is more than enough for a 300W power supply and 5vsb transformer is capable of 2A output.

For 5vsb, it uses NPN transistor KSC5027-R in a typical 2 transistor 5vsb circuit.

The PWM controller is KA7500B, there is no supervisor IC, but I think that the OVP/UVP is done with that extra add on board near PWM IC.

3.3V: 1xSBL2040CT 2x2200uF 10V JunFu WG bulging

5V: 1x S30D40C 2x2200uF 10V JunFu WG bulging

12V: 1xF16C20C 16A, 1x2200uF 16V JunFu WG bulging, 1x1000uF 16V Capxon KM

All the output rails have pi coils including 5vsb and negative voltage rails -5V -12V.

It's not worth the time removing the glue that is all over the place to repair it.

[BigTroll]

Re: 3 power supplies from the past

I really like the HEC, I have a hec 250SR-T in service, I also like HEC cases, they are a good value. I also have a HEC 300 watt TFX psu as a tester. they seem to use middle tier Taiwanese caps.

[Pentium4]

Re: Jou Jye Electronic TA-300CE

The following power supplies were made in 2001-2003. They all have a P4 connector but they are 5V heavy. Let's talk about the HEC first:


Herolchi Electronic Corporation HEC-250LR-PT

Nice! That's very beefy for a 250W PSU. It could do at least 300W continuous, maybe more. I've seen 2SC2625's in PSU's that can do 350W. I'm glad you decided to recap it. Too bad there's only one cap for 12V and no coil, but if you put a better specced cap there I'm sure the ripple wouldn't be too bad. Does it have just the one fan?

This is the best Linkworld I have seen. 100% capable of doing its label ratings.

That's the best Linkworld I've seen too. Very impressive. I can't find much on that model number at all. If you don't mind me asking, what markings are on the main transformer under that "QI OK" sticker?

Good input filter even with safety approved parts, nice!

Jou Jye psus are decent power supplies, usually quite overbuilt, some reviewers have proved they can do more than the label ratings, with voltages and ripple remaining in specs. Unfortunately, some design glitches tend to make them fail prematurely.

Nice PSU. Looks like it runs hot though

[BigTroll]

Re: 3 power supplies from the past

another thing interesting is the plus shaped vents on the bloated blue Jun Fu's on the secondary side of that power supply fuhjyyus never have had that vent style.

[c_hegge]

Re: 3 power supplies from the past

Yeah, older Jun Fools used that + shaped vent. The newer Fuhjyyu-made ones don't.

[BigTroll]

Re: 3 power supplies from the past

doesn't HEC make cougar power supplies or something like that now? i heard there good units?

[Pentium4]

Re: 3 power supplies from the past

Yeah, HEC and Cougar in general are usually pretty decent power supplies

[goodpsusearch]

Re: 3 power supplies from the past

I replaced the 2x470uF 200V Capxon capacitors with 2x680uF 200V Jun Fu caps taken from the dead Jou Jye 300watt psu I posted above.

I also replaced the 3.3V rectifier S15D40C TO-247 15A with D83-004 30A rectifier.

The thermal sensor of the psu was sensing nothing but air temp, so I glued it to secondary heatsink using cables to move it from its original place. But I was still not pleased with the thermal control. The fan controller spins the fan at full speed when the psu gets hot, but the original Globe Fan was inadequate. I replaced it with a Yate Loon fan I took from an exploded Dell psu made by Huntkey. Now, the psu remains cool without getting too loud.

I recapped it using Teapo, Samxon, Nichicon, Panasonic, Rubycon and OST! I had to keep the cost down.

3.3V: 2x 2200uF 6.3V Teapo SX

5V: 1x 2200uF 10V Samxon & 2x 1500uF 16V OST

12V: 1X Panasonic FM 3300uF 16V

[goodpsusearch]

Re: 3 power supplies from the past

Look what I got for free! 4 250W-300W rated power supplies. Their production date varies from 2000 to 2003.

Look at the photo. Do you see something strange?



The more overbuilt psu is the one rated for 250W while the others with the tiny heatsinks,undersized transformers and inadequate switching transistors are rated for 300W

More about it later

[goodpsusearch]

Re: 3 power supplies from the past

The first one is another ACE AM608B1-300WS. I don't know the OEM, "wan nien" is written on PCB.

The bridge rectifier is KBP06, rated for 1.5A only!

The primary caps are Capxon 330uF 200V. Didn't bother to measure real capacity.

The switching transistors are the usual suspects 2x E13007 and the transformer is EL-33.

You don't see a second toroid coil on the secondary of the psu because this psu generates 3.3V with a mosfet. PHP45N03LT rated for 45A.

5V rectifier is the usual SBL3040PT and 12V rectifier is STPR1020CT rated for 10A.

The "fan controller" is a thermistor in series with the fan...

[goodpsusearch]

Re: 3 power supplies from the past

Linkworld LPK9-4 300W

The only difference with LPK9-3 is that in LPK9-4 the 5V rectifier is SBL2040CT instead of SBL30.


The bridge rectifier is KBL406.


The switching transistors are 2x E13009L which is more than enough for 300W. Too bad that the main transformer is not ERL35. The secondary toroid coils are not undersized and the outputs rails have coils and caps. 2 caps are bulging though.

The fan is directly connected to 12V without the thermistor in series we see in Linkworld psus.

All main voltage rails rectifiers are rated for 20A. I don't think it's bad, but it certainly wouldn't do 300W without blowing.

The MK 470uF primary caps real capacity is 294

[goodpsusearch]

Re: 3 power supplies from the past

The third power supply is Shido CWT-300ATX12. As the model implies, the OEM is Channel Well Technology. It is a half bridge unit with its 3 main voltages group regulated with one toroid coil. The power supply is made in 2003 but the design must be older. UTC TL494 and LM339N are used for PWM and OVP/UVP.

-RBV-406M 4A bridge rectifier

-2x330uF primary capacitors of unknown maker.

-2x P13007-H2 switching transistors

-small sized transformer

It is already certain that this is a 250W max psu. Until now nothing seemed unusual for a psu of its range. But when I looked at the secondary of this psu there was a big surprise for me:


There are 2 Panasonic caps on this gutless wonder! The caps are not fake and they measure good to the cap tester! The are 105C FJ 6.3V 1500uF & 2200uF.

On the other hard this pos has only 1 cap per rail, except 5vsb where it has 2 and no coils for 3.3V, 5V and 12V. I expect a lot of ripple on its outputs..

Rectifiers:
12V: D10LC20U 10A rated
5V: CTB-34M 30A
3.3V: CTB-34 15A

[chozo4]

Re: 3 power supplies from the past

Reminds me of the RAIDMAX RX-380K 380W I have I use for a bench supply. Heavy on the +5v with 29A and only 11A on the +12 but isn't as gutless as would expect from other older supplies. One of these days I'll get around to recapping it as it has partially bulging Teapo's inside. Used to serve pretty well on my overclocked Opteron 170 back in the days though.

[goodpsusearch]

Re: 3 power supplies from the past

I saved the best for last:

Moretec Electronics MPA-8809 (250W) made in 2000.

I am not familiar with that brand, all I can say is this is the actual maker of the psu.

It's the only power supply that actually has fan speed controller, it's the pcb mounted on the secondary heatsink.

The input filtering includes 2 MOVs for surge protection, that none of the 3 previous power supplies had.
The bridge rectifier is KBU6 rated for 6A more than enough for a 250W psu.
The primary capacitors are 470uF JPCE and their actual values are 480uF and 484uF. No fake primary caps here!

The main transformer is size 35 and the switching transistors are 2x C5352 from Toshiba good for 10A continuous, 15A pulsed.

The heatsinks are impressive. There is a daughter board for 5vsb, implying that this is a modified AT design.

The toroid coil is large and could do 350W easily.

The 3.3V is generated after 5V rectification with a 76121P 47A mosfet.

The 5V is rectified with 2x SBL2040C giving 40A total current.

Finally, the 12V rectifier is BYQ28X-200, rated for 10A maximum.

It's nice to see that every main output filter cap is 2200uF. Moreover, there is not a single output in this unit without a coil. All the coils are decently sized and have a core.

Not a single cap is bulging or leaking.

The soldering is good too and there is insulator glued to the PCB as you can see in the picture.

Unfortunately, this psu lacks an ATX 12V connector.

What do you think?

[momaka]

Re: 3 power supplies from the past

Nice PSU round-up.

The third power supply is Shido CWT-300ATX12. As the model implies, the OEM is Channel Well Technology.
...
Rectifiers:
12V: D10LC20U 10A rated
5V: CTB-34M 30A
3.3V: CTB-34 15A

Wait, so the 3.3V rail is not linearly regulated with a MOSFET?
If yes, then this is a real crappy PSU, with a separate 3.3V tap on the main transformer, which makes for very crappy 3.3V rail regulation.

On the other hand, such PSU is nice for modifying (for non-computer stuff) if you want much lower or much higher voltage outputs, because the 3.3V rail will raise or lower with the other rails.

...
As for the Moretec - it looks ancient, but still very decent. I have a very old 235W Morex power supply that is also quite overbuilt. It has similar looking heatsinks, Panasonic primary capacitors, and PCE-TUR output capacitors. I wonder if it is made by the same company as yours. Though, I should note, the soldering on my Morex is horrible. I think they got the wrong flux or something - it is that kind of bad.

[Stefan Payne]

Re: 3 power supplies from the past

doesn't HEC make cougar power supplies or something like that now? i heard there good units?

Well, depends.
The first charge of the Cougar units isn't that good.

Didn't have a scope but the Chroma report said for my 700W Cougar CM that the ripple was very very bad (about 200mV on +12V, 100mV on minor rails), though I don't know how that looked.
Maybe they were some short spikes that doesn't hold much energy, that wouldn't be that bad. But I didn't have the time to get a scope and take a closer look...

Buttom line:
They are in the pretty OKish range, like most FSP units.
Well at least the ones with a real HEC or HEC/Cougar sticker on it.
Sadly HEC also did some overrated garbage like some Xilence units or some other things...

Well, the be quiet layout seems to be pretty OK for lower end bronze units nowadays (be quiet layout because they were the first to use the two cooler design from HEC in the L8-CM series)...

[goodpsusearch]

Re: 3 power supplies from the past

Nice PSU round-up.


Wait, so the 3.3V rail is not linearly regulated with a MOSFET?
If yes, then this is a real crappy PSU, with a separate 3.3V tap on the main transformer, which makes for very crappy 3.3V rail regulation.

Indeed, there is no mag amp for 3.3V, that means the transformer has a separate 3.3V tap and then 3.3V is group regulated with the toroid coil that regulates 5V and 12V, like the Powertech psu I posted some months ago.

As for the Moretec - it looks ancient, but still very decent. I have a very old 235W Morex power supply that is also quite overbuilt. It has similar looking heatsinks, Panasonic primary capacitors, and PCE-TUR output capacitors. I wonder if it is made by the same company as yours. Though, I should note, the soldering on my Morex is horrible. I think they got the wrong flux or something - it is that kind of bad.

Btw all psus work, some have voltages out of the ATX specifications but that's due to bulging caps and no load operation.

The Moretec however has 0V on its 3.3V. Maybe the mosfet failed open? Don't know, didn't bother to check.

Sadly HEC also did some overrated garbage like some Xilence units or some other things...

Like that?
https://www.badcaps.net/forum/showthread.php?t=34170