Solytech/deer getting better

[i4004]

Re: Solytech/deer getting better

could you post some images of that fortron with 2 tr. design?
i presume it's this
http://www.newegg.com/Product/Produc...82E16817104951

if that one indeed has 2 tr. circ. then i need to stop generalizing.
<wink>

[everell]

Re: Solytech/deer getting better

I purchased my Allied as a used one among several. It looks like brand new, very clean inside. So I only spent one dollar on mine. Yes, it has the 2 transistor 5vsb circuit. I started looking at it, and the Allied is totally dead. The fuse is good, the input voltage across the two stacked input capacitors is 320 volts. But the 5vsb circuit is dead, dead, dead. I measured the resistance of the 2N65 transistor - looks OK. Even tried replacing it with another. Still dead. I also took out the other transistor (2222A) and measured it. Looks OK. So no shorts. The transformer measures OK for ohms. So now will have to look at and check out parts one by one. I have never been able to fix one - unless you call "permanently" fixing one - that is, putting a transistor into orbit! So if I don't find a fix in a reasonable amount of time, I will just gut the circuit and install one of my DM311 circuits on this power supply.

This board has resistors and capacitors mounted to top of pc board instead of the little surface mount components on bottom of board (like the better Bestecs). It also has the chip of the year - 2005 pwm/supervisor chip. I get the impression that this must be leftover war surplus or something. No date on pc board to give a clue.

The main switching transistors on mine are 13007.

Nice power supply to play with for a buck!

[370forlife]

Re: Solytech/deer getting better

could you post some images of that fortron with 2 tr. design?
i presume it's this
http://www.newegg.com/Product/Produc...82E16817104951

if that one indeed has 2 tr. circ. then i need to stop generalizing.
<wink>

http://www.newegg.com/Product/Produc...82E16817103915

That one

Kinda hard to get a pic, it is in a server rack running a home server for a friend who lives about 20 miles away, and I only go over there once every 2 weeks for a lan party. It does do pretty well being cooped up in that server rack with a dual p3 1ghz board. Just based on a old design.

[ratdude747]

Re: Solytech/deer getting better

So you wouldn't use a low watt fsp, hipro, delta, enermax, corsair, etc... because those too only have 2 capacitors per rail?

ive seen better... even my 300w delta is built better than that.

[i4004]

Re: Solytech/deer getting better

everell, but it seems to me (from your pics) that power tr. for +5vstby is blown?
or is it just optical illusion?
this pic
https://www.badcaps.net/forum/attach...chmentid=11759
look at it on 370s pic
https://www.badcaps.net/forum/attach...chmentid=11470

>Nice power supply to play with for a buck!

that seems like a proper price for it.
<wink>

------------
i would pick delta or something cwt made over fortron, but for the price of fortron...
<wink>
this fortron
http://www.ve-mil.hr/opis.aspx?prika...=0&Sifra=21552
is essentially cheapest decent psu i can find here...

though(just now i see it) this
http://www.ve-mil.hr/opis.aspx?prika...&Sifra=1011557
is not too bad price-wise...

what's inside, i wonder....

[everell]

Re: Solytech/deer getting better

Back to the Allied power supply ...................... it is fixed, and running. Turns out that a wire lead was shorting across to another trace grounding out the 5vsb. Judging from the way it looks, this was probably a defect from the factory, So much for Solytech improved quality. And I finally fixed one of them 2 transistor 5vsb circuits.

[momaka]

Re: Solytech/deer getting better

It also has the chip of the year - 2005 pwm/supervisor chip. I get the impression that this must be leftover war surplus or something.

I wouldn't be too surprised if they were, whichever war that might be for .
I've seen some '2002' or '2004' variants as well, but they seem to be very rare.
----
Congrats on the fixed Allied.
If you ask me, their QC is still better than most other gutless units, especially when compared to Leadman, Raidmax, and a few others which have absolutely no indication (be it a sticker or mark) that they passed QC.

[everell]

Re: Solytech/deer getting better

The transistor was OK, that was just flash from the camera.....an optical illusion!

[i4004]

Re: Solytech/deer getting better

that snafu aside, you probably take best pics of psu guts i've seen here...

and yes, i checked what camera you use, it seems to be some cheapo kodak..heh...

well done.

[c_hegge]

Re: Solytech/deer getting better

Lookie here what I found!

Sorry to dig this thread up, but I have an Identical PSU to everell's one here. one of the transistors on the 5vsb has exploded. I'm thinking of recapping it and giving it a DM311 PWM chip mod, however, I'll need some help. everell, would you be able to draw up a few diagrams of the 5vsb of this PSU (a bit like you did in your Bestec ATX-250-12E thread?)

[shovenose]

Re: Solytech/deer getting better

I bought the fsp atx-300pa off newegg. Its quiet but i dont trust. It has shit caps (teapo, capxon, and Has a so-so adda fan.

[goodpsusearch]

Re: Solytech/deer getting better

Teapo is nice if it cooled enough.

[weirdlookinguy]

Re: Solytech/deer getting better

Some of the older Adda fans have a history of seizing up after a few years of service. I don't know if their newer fans still do this.

Don't worry about it, but do check it every now and then.

[shovenose]

Re: Solytech/deer getting better

Um...im selling it. Still better than the sunbeams you often find on some ebay pcs

[everell]

Re: Solytech/deer getting better

Sorry to dig this thread up, but I have an Identical PSU to everell's one here. one of the transistors on the 5vsb has exploded. I'm thinking of recapping it and giving it a DM311 PWM chip mod, however, I'll need some help.

Compare this power supply which I modified with the one you have. They should be very close.

https://www.badcaps.net/forum/showth...=raptor&page=2

It includes the drawing of the 5vsb before conversion and the drawing of the new 5vsb circuit.

The starting point is to draw the circuit which you actually have. Then draw what you plan to change. Then you can begin removing parts and replacing parts. Kinda like cut and paste!

[everell]

Re: Solytech/deer getting better

Also study this thread showing a recent Solytech power supply. It has the Infineon ICE series chip in the 5vsb circuit. I have included schematics in the thread below

https://www.badcaps.net/forum/showthread.php?t=11416

There are several different pwm chips you can use in the 5vsb circuit.