Need ATX Power Supply Repair Manual

• Jul 17, 2011

• #1

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Hi,
I need a Repair/Service Manual for ATX Power Supply . It will be more helpful if it is a diagram based on Made by China ATX Power supply . Because in my country - China made ATX Power Supply is available .

If anyone have this, please share with me ..........

Thanks .

 

Last edited: Jul 17, 2011

• Jul 17, 2011

• #2

andre_luis

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I´m aware that is not the answer you expect, but most of problems related to power supplies are statistically concentrated in switching devices ( IGBT, MOSFET ) or at the Fuse.

+++

 

• Jul 17, 2011

• #3

J

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Do you mean "pin out", rather than "point out?" If pinout, this should help.

If voltages, let me know, I do have a schematic of a typical ATX laying around.

John

 

• Jul 17, 2011

• #4

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Thanks Andre for your Reply . Yes you are right . I am facing Switching problem with an ATX PSU . This PSU has burnt out 13007 Transistor and its Base fusing Resistor 10 ohms . I have Replaced them but still it is not starting . I have checked rest all of parts of the PSU Except in Controller section's Resistors . But in Controller section - I am getting 5VSB and 5V PS-ON . But still it does not run . Even I have changed IC TL494 and LM339 also ...... but all the hail ..... It does not listen to me at all . What will I do now ??? Why it is not switching ???

 

• Jul 17, 2011

• #5

andre_luis

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Had you attached some load to output ?
A minimal current drain is required to SMPS works.
( I´m asking just to certify )


+++

 

• Jul 17, 2011

• #6

mister_rf

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Some ATX Power supply schematics:

 

Attachments

• ATXpower3.bmp

  2 MB · Views: 509
• 
  300W ATX PC POWER SUPPLY.gif

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• 
  ATX6.jpg

  1,009.8 KB · Views: 1,538
• 
  ATX22.PNG

  45.1 KB · Views: 8,063
• 
  atx250_sg6105.gif

  46.3 KB · Views: 1,522
• 
  ATX win 235.jpg

  386.8 KB · Views: 3,869
• 
  FSP145-60SP.gif

  61.1 KB · Views: 1,662
• 
  iwp300a2.gif

  49.9 KB · Views: 1,220
• JNC Y-B200-ATX.BMP

  888.8 KB · Views: 407
• 
  jnc.gif

  120.6 KB · Views: 3,424

• Jul 17, 2011

• #7

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Ya .... I had tried with also . I attached a ASUS CD-ROM 52X . But no hope .......

 

• Jul 17, 2011

• #8

mister_rf

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ATX power supply schematics

 

Attachments

• ATX2005.pdf

  149.9 KB · Views: 681
• ATX7500.pdf

  46.1 KB · Views: 577
• ATX-5400M (Microlab 350W).pdf

  47.3 KB · Views: 486
• ATX-5400X (Microlab 400W).pdf

  46 KB · Views: 501
• ATX 2 SCHEM .pdf

  629.3 KB · Views: 559
• ATX Power Supply HPC-420-302 DF.pdf

  178.1 KB · Views: 522
• ATX Power Supply Linkworld 200W, 250W, 300W.pdf

  385.8 KB · Views: 544
• ATX PowerSupply-W-P300.pdf

  213.9 KB · Views: 583
• ATX_forward_1 PC Power.pdf

  2.9 MB · Views: 659
• ATX_forward_2 PC Power.pdf

  2.3 MB · Views: 643

• Jul 17, 2011

• #9

mister_rf

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ATX power supply

 

Attachments

• ATX_forward_3 PC Power.pdf

  2.1 MB · Views: 526
• ATX_half bridge PC Power.pdf

  1.3 MB · Views: 607
• ATX_Microlab-5400M-2.pdf

  47.3 KB · Views: 374
• ATX_Microlab-5400X-1.pdf

  46 KB · Views: 359
• atx_ps300w.pdf

  82.1 KB · Views: 431
• atx_tap_dtk_3518.pdf

  64.3 KB · Views: 373
• JNC Computer CO., LTD model LC-B250ATX.pdf

  52.5 KB · Views: 407
• jnc_model__atx400w_1548.pdf

  905.4 KB · Views: 483
• jnc_sy-300atx_c5027_atx_power_supply.pdf

  729.3 KB · Views: 453
• PS2_450W.pdf

  154.4 KB · Views: 529

• Jul 17, 2011

• #10

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Thumbs Up dude

---------- Post added at 01:36 ---------- Previous post was at 01:33 ----------

mister_rf said:

ATX power supply

Click to expand...

A lot of thanks mister RF . I have given Thumbs up but How can I give you Points ...

 

• Jul 17, 2011

• #11

mister_rf

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ATX power supply

 

Attachments

• ATX-300P4-PFC.pdf

  32.6 KB · Views: 422
• codegen_250xa1_cg-07a.pdf

  71.5 KB · Views: 480
• colors_it_330u_sg6105.pdf

  330.7 KB · Views: 421
• DEZH_BEZ_OPTRONA_SG1605.pdf

  24.9 KB · Views: 351
• DPS260EP_1.pdf

  218.6 KB · Views: 421
• DPS260EP_2.pdf

  132.5 KB · Views: 400
• DTK_PTP_2038.pdf

  27.1 KB · Views: 366
• FSP145-60SP.pdf

  64.4 KB · Views: 385
• IP-P350AJ2-0.pdf

  283.3 KB · Views: 418
• IW-ISP300AX.pdf

  176.1 KB · Views: 533

• Jul 17, 2011

• #12

mister_rf

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ATX power supply

 

Attachments

• KME_pm-230.pdf

  37.1 KB · Views: 343
• MaxpowerPX-300W.pdf

  59.2 KB · Views: 383
• Power_Master_FA_5_2_v3-2.pdf

  133 KB · Views: 398
• Power_Master_LP-8_AP5E.pdf

  133.2 KB · Views: 414
• SevenTeam_ST-200HRK.pdf

  145.1 KB · Views: 432
• SHIDO_ATX-250.pdf

  37.8 KB · Views: 380
• SUNNY_ATX-230.pdf

  30.7 KB · Views: 419
• iwp300a2.pdf

  34.1 KB · Views: 350
• atx_pfc400w.zip

  290.9 KB · Views: 402
• ATX_DR0183.zip

  182.7 KB · Views: 385

• Jul 17, 2011

• #13

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Ok, OK ... Thanks Dude ...... I do not need more Schematic ...... These are enough for me .

But do you have any Repairing Guide or manual ??

 

• Jul 18, 2011

• #14

mister_rf

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What about the ''+12V" power supply from the stand-by circuit (usually for a value of 15-25V), to be applied for the driver section, did you measure it? Any voltages on TL494 pinouts?

 

Attachments

• PC Power Supply Repair.pdf

  580.3 KB · Views: 590
• 
  CI voltages.JPG

  107.2 KB · Views: 6,444

• Jul 18, 2011

• #15

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Here is the measurement of Voltage .... Shown in the below Image ....

 

Attachments

• 
  PSU.GIF

  320 KB · Views: 1,841

• Jul 18, 2011

• #16

mister_rf

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Need to check Q4 & Q5.
Also, to be sure change capacitors C9/C10, check components: R6/R7, R10/R11, D4, D3.

PS: input Power ON = low :smile:

 

Attachments

• 
  Atx_test 2.GIF

  37.9 KB · Views: 2,544

• Jul 18, 2011

• #17

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I have checked Q4 and Q5 C945 - Both of them are Fine . C9/C10 are 2.2μF/50V - this capacitors seems to be OK . Will I change it though ?? There is no R7 and R11 Resistor . They have only one fusing Resistor 10Ω Which is in Transistor's Base R6 and R10 . But they have used two signal/Crystal Diode in place of one Diode . They are D3/D4 and D5/D6 . I have checked them . They are OK . Still Do I need to change these 10Ω Resistor and D3/D4 and D5/D6 Crystal Diode (1N4148) ??

And yes you are right . PS-ON voltage seems to be low . I measured the voltage and it is 4.8V . But there is no Capacitor with the PS-ON nor any Transistor . Will 4.8V be problem for PS-ON ?? How can I increase the voltage of PS-ON to 5V ??

And one thing we need give attention in the previous Post . That is DTC (Dead Time Control) Voltage of Pin4of TL494 . As it's Datasheet DTC will be 3.3V (Maximum) at Zero Duty Cycle . And OV at Max. Duty Cycle . Here it is showing 3.2V . Is Zero duty Cycle means PS-OFF Condition ??

 

• Jul 22, 2011

• #18

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I have changed all those capacitors, Diodes and Transistor with new one . But still the Power supply is not running . What will I do now ??

Please Response ........... I am waiting for your reply ......

 

• Jul 24, 2011

• #19

H

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PS_ON must be grounded for the supply to turn on..

Pleases me to see that the schematic was done on AMIGA

 

• Sep 27, 2012

• #20

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Wow. lots of SMPS circuits here, but I want to have a circuit diagram of bit higher wattage PSUs, i.e. >= 500W - 1000W. Want to have circuits of dual rail system with almost 40-44A on +12V line. Can anybody have those circuits?