Question about Bestec (ATX-250-12E) 250-Watt Power Supply

3 Answers

Schematic diagram for ATX-250-12E

Can I obtain a schematic diagram for the ATX-250-12E?

Posted by on

  • 1 more comment 
  • farmme Aug 11, 2008

    I alsorequire a manual for a Bestec ATX 250 12E please

  • Alex Aguilar Apr 08, 2014

    You probably wont find the schematic from the manufacturers website, however there are plenty of electronics engineers and hobbyist whom inverse engineer these power supplies and either charge for the schematic or post it free for download. For instance here is the schematic I found to a similar one:http://www.smpspowersupply.com/ATX_power... If you can understand one ATX you pretty much understand them all! There are several reasons for wanting the schematic to a power supply other than just to simply repair it; For instance to mod it to take a cigarette lighter in a car as input voltage instead of plugging into a power outlet. The parts and circuits making up most ATX power supplies with the exception of the main transformer are quite cheap and can be purchased at your local Radioshack or at sites like mouser.com. I sometimes get them out of broken radios.

  • Alex Aguilar Apr 08, 2014

    Some helpful links:http://www.pavouk.org/hw/en_atxps.htmlhttp://www.smpspowersupply.com/

×

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

I repair power supplies and various electroics, most cases it will be compacitors, or diodes which have caused it to fail!!

Posted on Jan 14, 2012

  • 3rdBaSs Jan 14, 2012

    most cases manufactors use cheap ones which some gui mes leak across the motherboard and destroy it, by allowing power spikes on lower sections of the board

  • Alex Aguilar Apr 08, 2014

    Id also like to add that you can buy an entire bag of capacitors or diodes for only a few bucks at radioshack or from mouser.com

×

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 3 Answers

You probably wont find the schematic from the manufacturers website, however there are plenty of electronics engineers and hobbyist whom inverse engineer these power supplies and either charge for the schematic or post it free for download. For instance here is the schematic I found to a similar one: http://www.smpspowersupply.com/ATX_power_supply_schematic.pdf. If you can understand one ATX you pretty much understand them all! There are several reasons for wanting the schematic to a power supply other than just to simply repair it; For instance to mod it to take a cigarette lighter in a car as input voltage instead of plugging into a power outlet. The parts and circuits making up most ATX power supplies with the exception of the main transformer are quite cheap and can be purchased at your local Radioshack or at sites like mouser.com. I sometimes get them out of broken radios.
Some more helpful links: http://www.pavouk.org/hw/en_atxps.html http://www.smpspowersupply.com/
Sincerely,
Alex

Posted on Apr 08, 2014

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 5,568 Answers

Once upon a time . . . I actually repaired PC supplies but only for some oddball PCs whose makers were too stupid to buy 'off-the-shelf' supplies from others.
There is a good possibility that replacement parts to repair one of these will cost more than a new replacement supply. You just cannot compete with people who earn a couple of dollars a day assembling them.
They aren't tough to repair if you have some technical skills but it just isn't worth it.
I'm pasting part of a post below I just did for someone else who wanted to know if the board could be damaged from a failing supply-
"Since there have been some changes in available outputs and connectors even on ATX supplies, make sure you compare pictures of the supply to your own but in any case, I would recommend using a replacment rated at 350W as this will run more conservatively and not be as stressed as the 250 you now have. It won't cost a lot more and will not consume any more power but the critical components will run cooler.
 
Not as a recommendation, just a current example on eBay:
 
http://cgi.ebay.com/Mustang-Switching-Power-Supply-350W-Model-LC-B350ATX_W0QQitemZ250294363195QQcmdZViewItem?hash=item250294363195&_trkparms=72:1156|39:1|66:2|65:12|240:1318&_trksid=p3286.c0.m14
 
 The last couple I bought were $5 each with $7 shipping charge from a US source."      

Posted on Sep 19, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

I need a schematic diagraqm for a Pacific Power Supply ATX 1U


Do you have the exact model of the power supply? There are a lot of these running around but without the model it's hard to say which one.

Dec 01, 2014 | Power System Power Supplies

3 Answers

Schematic atx diagram


I give up! Why would you need a schematic for a computer power supply? I've been in the computer business for over 30 years and have never needed a power supply schematic. Just curious!

Sep 18, 2013 | Antec BP350 350-Watt Power Supply

1 Answer

Where can I find a schematic diagram fot Enermax EG465P-VE ATX


You can't found any diagram for and specific ATX PSU
but there are some generics

Dec 01, 2012 | System Power Supplies

1 Answer

SCHEMATIC DIAGRAM FOR ATX250-3505


While this link will show you a schematic for a 200 Watt ATX, the one you seek should be similar.

http://www.pavouk.comp.cz/hw/en_atxps.html

Dec 29, 2011 | Astec 250W Power Supply w / External Fan...

1 Answer

5VSB IS MISSINIG FROM MOTHERBOARD CONECTOR . COMPUTER WILL NOT BOOT WHEN POWER SWITCH ON FRONT PANEL IDEPRESSED . NEED A SCHEMATIC AND COMPONENT DIAGRAM FOR THIS UNIT .


specs are here
http://www.antec.com/specs/SP500_spe.html
This includes 5VSB
There is more info here
http://www.newegg.com/Product/Product.aspx?Item=N82E16817103937
the ATX spec and 20+4 connector pinout (wich locates 5VSB got you) can be found in the Wikipedia article (section 3 in http://en.wikipedia.org/wiki/ATX#ATX_power_supply_revisions has pin out details for ATX rev 2.1).
If your psu is missing 5VSB it is defective and should be returned to manufacturer or retailer if within warranty period. See testing psu articles also.

Jan 19, 2011 | Antec SmartPower SP-500 (ASKU37152)...

1 Answer

Dell ATX(12v) power supply


The fact that it is made by Dell is irrelivent.

ATX is a standard and so are 20 and 24 pin motheroboard connectors.

You should find what you need by searching for: power supply unit on Wikipedia and Google.

Good luck!

Apr 08, 2010 | Dell 200W ATX Power Supply GX1 - GX110...

1 Answer

SCHEMATIK DIAGRAM FOR POWER SUPPLI


I would also have liked to have had a schematic diagram for my ECHOSTAR 450w ATX power supply.

Not having one though, I have replaced two capacitors (one with a bulging top) and another with a leaking top, three rectifiers (two shorted and the third had a cracked case), and have ordered transistor Q1 (also shorted). Will also need to repair trace damage on the bottom of the circuit board. Other components check out OK so I hope it will be working again after the transistor arrives Monday. I need the -5v this one supplies to get my old computer running so I can retrieve last year's tax info.

Jan 17, 2010 | Echo Star 450W 450 Watts ATX Power Supply,...

3 Answers

I need datasheet for AT2005 IC


Datasheet here:

http://www.china-ate.com/PDF/IC/AT2005B.pdf

Jan 30, 2009 | OEM Systems ATX P4 350 Watts Power Supply...

1 Answer

Schematics or diagram for a 480W PSU


I need a schemetic diagrm D15-1013/diablo ATX 250w Power supply
Thanks Louie.

Dec 18, 2008 | System Power Supplies

Not finding what you are looking for?
Bestec (ATX-250-12E) 250-Watt Power Supply Logo

3,491 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bestec System Power Supplies Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Matthew Spark
Matthew Spark

Level 3 Expert

1042 Answers

Mark Taylor
Mark Taylor

Level 3 Expert

728 Answers

Are you a Bestec System Power Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...