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**370forlife** · 08-07-2009, 12:40 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

really not that bad, really just needs a beefier bridge rectifier, and input filtering, and maybe a recap (if my next question is yes).

Are those real chemi-cons on the secondary?

The UL leads to casing macron.

**Newbie2** · 08-07-2009, 12:45 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

Oops I copy and pasted the wrong spec sheet link for the STPR1620CT, here is the correct link: https://cdn.badcaps-static.com/pdfs/...97f161f2c7.pdf

**Newbie2** · 08-07-2009, 12:47 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

Originally posted by 370forlife

really not that bad, really just needs a beefier bridge rectifier, and input filtering, and maybe a recap (if my next question is yes).

Are those real chemi-cons on the secondary?

The UL leads to casing macron.

I'm not going to bother with this power supply, I already used up all my available parts on my L&C 450W power supply.

I did put a few United Chemi-con capacitors on the secondary side, but the few others are "SAMYOUNG" capacitors. (at the time I did this I just put in what I had laying around to replace the TEAPO capacitors that came with it)

**Newbie2** · 08-07-2009, 12:55 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

I doubt that it's a Casing Macron power supply. On the PCB silkscreen it has references to ISO brand power supplies near the fuse, "T6.3AH/250V FOR ISO-350,400,450", "T5AH/250V FOR ISO-200,230,250,300", and "T8.0AH/250V FOR ISO-500". I heard the ISO brand is the infamous Channel Well Technology (CWT)'s budget brand of power supplies.

Also, willawake's ISO brand 420W power supply also appears to have the exact same PCB layout as this "The Best Power" 500W power supply, take a close look:

willawake's ISO 420W power supply:

My "The Best Power" 500W power supply:

**370forlife** · 08-07-2009, 12:59 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

ISO is CWT, thats true.

**Krankshaft** · 08-07-2009, 01:59 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

Aside from their Fukyuu fling CWT supplies are built pretty well.

**momaka** · 08-07-2009, 04:51 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

Newbie2: I have the exact same power supply! Same PWM controller design, same PCB design, same main transformer marking "TEPN-EI33250", same case (but no second fan on top of the power supply), same capacitors choices (Fuhjyyu, Teapo, Ost), and same "ISO" markings.

But... mine is a TurboLink LC-A420ATX. In other words, it's a L&C Technology power supply. It even has the UL number for L&C (E164554).
Kind of makes me wonder who made these units. They don't seem to use the typical Allied/Deer/L&C design with the "year" PWM controller. Maybe they are a Channel Well design, but the transformers aren't labeled CWT.
Anyways, I don't think it's a Macron Power - PCB doesn't say so and nither does the transformer (no "MP" markings).
----
As far as its quality, I think it's actually pretty decent for a low-power computer. The power supply has a "33" sized main transformer good for 250 watts. The primary switchers are rated 24A in pulse mode - probably enough to go with the transformer rating. And the overall design is good as well. TL494 is the PWM controller while TPS3510P is the supervisory chip providing OVP (over-voltage protection), UVP (under-voltage protection), and SC (short-circuit protection).

All you really need to do is add the primary side filtering and it should be good to go. I can see enough space on the PCB for 2 X caps, 2 Y caps, a choke (LF2), and a small coil (LF1). Bigger caps on the secondary might help too. What do you have in there right now?
Other than that, the 4A bridge diode should be enough for that power supply, giving you 440 watts to work with (of course I wouldn't force this power supply over 250, like your other L&C).

**ratdude747** · 08-07-2009, 04:53 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

Your psu has thin wire. not good at all.

**i4004** · 08-07-2009, 05:39 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

we commented it in the link you provided
https://www.badcaps.net/forum/showthread.php?t=5727
so why should we do it again?

it's still pos with potentially dangerous +5vstby supply.
not worth bothering with.

**Newbie2** · 08-07-2009, 05:58 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

Originally posted by momaka

Newbie2: I have the exact same power supply! Same PWM controller design, same PCB design, same main transformer marking "TEPN-EI33250", same case (but no second fan on top of the power supply), same capacitors choices (Fuhjyyu, Teapo, Ost), and same "ISO" markings.

But... mine is a TurboLink LC-A420ATX. In other words, it's a L&C Technology power supply. It even has the UL number for L&C (E164554).
Kind of makes me wonder who made these units. They don't seem to use the typical Allied/Deer/L&C design with the "year" PWM controller. Maybe they are a Channel Well design, but the transformers aren't labeled CWT.
Anyways, I don't think it's a Macron Power - PCB doesn't say so and nither does the transformer (no "MP" markings).
----
As far as its quality, I think it's actually pretty decent for a low-power computer. The power supply has a "33" sized main transformer good for 250 watts. The primary switchers are rated 24A in pulse mode - probably enough to go with the transformer rating. And the overall design is good as well. TL494 is the PWM controller while TPS3510P is the supervisory chip providing OVP (over-voltage protection), UVP (under-voltage protection), and SC (short-circuit protection).

All you really need to do is add the primary side filtering and it should be good to go. I can see enough space on the PCB for 2 X caps, 2 Y caps, a choke (LF2), and a small coil (LF1). Bigger caps on the secondary might help too. What do you have in there right now?
Other than that, the 4A bridge diode should be enough for that power supply, giving you 440 watts to work with (of course I wouldn't force this power supply over 250, like your other L&C).

An L&C-made power supply!?

I guess the people at Deer/L&C couldn't figure out how to design something better than their common "Y-B200ATX" design and decided to clone one of CWT's designs.

I'm not going to bother doing anything to this power supply, since first I don't have any parts to scrap from old power supplies for the input filtering, I don't have enough extra caps to do the job, and my brother's PC is running fine on the Enermax 300W PSU and my Celeron 2.2GHz PC is doing good with my modified L&C 450W PSU.

But, if I could modify it, I would since the CWT design in it is very good.

momaka, can you post pictures in the forum somewhere of your Turbolink power supply?

**Newbie2** · 08-07-2009, 06:30 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

I just found some photos of momaka's Turbolink LC-A420ATX power supply. Just as momaka said, it's the exact same thing besides the second fan on mine.

The fourth photo shows the rear 80mm fan of that power supply. It appears to be the same "Rulian Science" RDL8025SA fan that originally came in my "The Best Power" power supply.

Also, judging from the fifth photo, the openings in the rear of the power supply along with the sticker showing the month and year of production are the exact same as my "The Best Power" power supply.

From this, I can conclude that the actual manufacturer of this "The Best Power" 500W power supply is Deer/L&C, with a clone of a CWT design.

**ratdude747** · 08-07-2009, 08:03 PM

Re: Examination of "The Best Power" MT-500P 500W ATX power supply

yup a shitty gutless wonder

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Examination of "The Best Power" MT-500P 500W ATX power supply

Examination of "The Best Power" MT-500P 500W ATX power supply

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