Atx Power
Atx Power
ATX Power Supply Repair And Troubleshooting
Customer ATX power supply came in with the complaint of intermittent no power. When testing it with power on, I could see that the fan is not rotating. Not only that, some filter capacitors also became bulge because of the heat accumulated inside the power supply. The failure of the fan would not suck out the heat generated by the components especially the switch mode power transformer.
If you switch off a working power supply and power removed, touch the power transformer, you could feel it is quite warm. Another heat source would be the heat sink where the output diodes attached to it. Diodes run a little bit hotter in filter circuit than diodes in other circuits due to the high current present at the secondary output line.
As for the malfunction fan, you actually could use a Philips oil based contact cleaner to service the fan. The grease inside the fan would run dry after serving for sometimes and eventually stop rotating. Remove the back plastic cap of the fan and spray it with the contact cleaner and you would be surprised the fan could actually regain back its glory. It will actually work just like a new fan. If it still doesn’t rotate, the best choice is to replace with a new fan. If you have the power supply that lying down at your work place then you could salvage the fan and install it.
From the photo at my website you also could see those decayed glue that stick besides the components. Manufacturers purposely used some kind of glue to apply on the components where they think those components will shake or comes out when there is vibration or during shipping. After the equipment work for a long time and the heat generated inside the equipment will turn the glue into conductive and sometimes would even corrode the pins of the components and eventually cause the equipment to stop working.
Scrap it off with your test pen and use Thinner solution to clean the printed circuit board. After replacing the capacitors, removed the decayed glue and service the fan, the Atx power supply again given a new life to faithfully serve the computer.
Some ATX power supply would take you a longer time to troubleshoot because of ‘too many’ components on the board. The most frustrated part is that you could not get the spare parts especially the power ic. Even if you could locate one, the price would be sky high and if this happen, I will usually get the customer to buy a new unit since nowadays the price of a new one are quite cheap.
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Logisys 600W 20+4-pin ATX Power Supply SATA+PCIe BLACK $42.99 |
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Imicro 375W Switching Power Supply ATX 2.03(P4) Model CG-MA-2 $6.00 |
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Thermaltake XP550 NP Purepower 430W 430 Watt ATX Power Supply $36.51 |
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Thermaltake TR2-420 NP ATX 12V 2.0 420W 420 Watt Power Supply PFC 20/24-Pin SATA $42.46 |
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Seasonic SS-400ES 400W 80 Plus Bronze ATX12V V2.31 Power Supply, New $30.00 |
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480W Dual Fan ATX Power Supply $10.99 |
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Lead Power Black ATX 12CM Fan 600W Silent Power Supply w/20-24pin SATA PCI-E $24.95 |
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Liteon PS-5022-5L ATX 200 Watt Power Supply HP spare 335182-001 $14.99 |
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For PC 20 24-Pin ATX SATA HDD Power Supply Tester+RJ45 RJ11 Cable Tester $8.37 |
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Antec SmartPower 350W ATX power supply SL350 -NEW!! $10.99 |
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Sparkle Power ATX-250GT 250W Switching Power Supply 20-PIN 9PX2502313 $25.00 |
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Enlight 300 watt ATX Power Supply Model GPS-300AB-100V Working Condition $4.95 |
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ATX Power Supply 20-pin to 24-pin Cable Adapter FREE SH $6.49 |
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OEM Gateway E4100 250W ATX Power Supply 6500703 Newton NPS-250HB A Rev 01 tested $9.50 |
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REALPCPOWER 3 Speed Dual Fan 450 Watt ATX Power Supply $34.00 |
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Dual Fan ATX 500w Computer PC Power Supply Intel/AMD $29.35 |
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COMPAQ DPS-300GB C 217220-001 300W ATX POWER SUPPLY $60.00 |
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ANTEC EARTHWATTS 500WATT ATX SWITCHING POWER SUPPLY MDL: EA-500D $25.00 |
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Switching Power Supply LP-6100C ATX-300W-P4 PSU $26.79 |
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UltraV Series ULT-400P 400W ATX Power Supply 24-PINS $45.00 |
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EVGA Classified SR-2 1200 Watt Continuous Power ATX $225.00 |
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ZALMAN 600 watt ZM600-HP ATX 12v Power Supply HEATPIPE Cooled Modular W Cables $99.99 |
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Antec NEO ECO 620C 620W Continuous Power Supply ATX12V v2.3 80 PLUS Certified $26.00 |
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Cooler Master CM Storm Enforcer - Mid tower - ATX - no power suppl SGC-1000-KWN1 $92.99 |
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NEW Sparkle Power SPI270LE 270 Watts FLEX ATX (20/24-Pin) 80PLUS $39.99 |
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EarthWatts ATX12V & EPS12V Power Supply EA-380D GREEN $53.88 |
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Dell OEM NPS-250KB C/D Optiplex ATX 250W Power Supply $22.79 |
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Sony 146870913 NMB MJPC-300A1 PCV-1102 295W 300W ATX Power Supply PSU $63.71 |
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~ QTY12 QVS CC2125Y Y Power Cable ATX 4-pin M / 2x F $20.00 |
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Thermaltake 430w Dual Fan ATX Power Supply $48.75 |
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ASUS EXADD220 220-Watt Non-ATX Power Supply (Pulled and Tested) $30.00 |
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Dell Optiplex HP-P2507F3 150W 250W ATX Power Supply $22.79 |
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PicoPSU-80 smallest PC 12V ATX Power Supply Cyncronix $24.99 |
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PicoPSU-80 car PC 12V ATX Power Supply Cyncronix $26.90 |
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Dual Fan ATX 500w Computer PC Power Supply Intel/AMD $29.99 |
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NEW 620W SHARK TECHNOLOGY ATX 12V power supply 12cm Fan $31.99 |
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XION Gaming 850W ATX Power Supply 14CM LED Fan 6xSATA 20 24p SLI PCI-E 6+2P $49.99 |
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Power Supply Tester SATA ATX PSU HDD 20 24 Pin For PC $5.66 |
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ANTEC CP 850-W ATX 12V V2.3 POWER SUPPLY NIB NVIDIA AND SLI READY 240 VAC $49.95 |
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ULTRA X4 400WATT MICRO ATX POWER SUPPLY $50.00 |
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Turbolink ATX-CW500P4 500W Switching Power Supply + Molex-to-PCI-E Converter $24.00 |
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400 Watt ATX12V 2.01 Dell Replacement Computer PC Power Supply $65.00 |
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Dynex DX-400WPS 400-Watt ATX CPU Power Supply $1.04 |
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Delta DPS-160GB 185W ATX POWER SUPPLY $25.00 |
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Diablotek PHD Series 850-Watt ATX Power Supply PHD850 (Used) $50.00 |
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Frisby ATX Full Size Desktop PC Computer Tower Case & True 350 Watt Power Supply $24.95 |
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PicoPSU-90 Genuine mini-box ATX Power Supply Cyncronix $30.05 |
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POWER SUPPLY TESTER HDD SATA 20/24 PIN PC PSU ATX $3.84 |
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PicoPSU-90 12V PC mini-box ATX Power Supply Cyncronix $29.99 |
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Frisby ATX Full Size Mid Tower Desktop PC Computer Case & True 350W Power Supply $27.95 |
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DELL 250W 24PIN ATX POWER SUPPLY - HP-P2507FWP3 $263.90 |
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AOpen FSP250-60GTV Computer Power Supply 250W ATX $16.95 |
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M3-ATX 125W 6 to 24V DC-DC Car PC Carputer Power Supply $64.99 |
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M3-ATX 125W 6-24V DC Car PC Power Supply Cyncronix $65.00 |
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PC Power & Cooling Silencer 470 Watt ATX Power Supply Dell Compatible $49.95 |
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M3-ATX 125W 6-24V Carputer PC POWER mini-box Cyncronix $64.95 |
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TOPOWER 420W ATX POWER SUPPLY TOP-420P II 20+4 MOBO $19.99 |
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OCZ Technology OCZ550FTY-B 550 Watt Fatal1ty Series ATX Modular Power Supply $66.99 |
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DELL 250W 20PIN PROPRIETARY ATX POWER SUPPLY - HP-P2507FW $250.90 |
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PC POWER TESTER SATA ATX BTX ITX 20 24 PIN POWER SUPPLY $0.01 |
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Antec Basiq VP450 ATX12V & EPS12V Power Supply - 450 W $42.92 |
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M2-ATX Car PC CarPC Carputer 160W DC-DC Power Supply $74.50 |
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spi (Sparkle Power) 180W ATX12V PFC Switching Power Supply Case of 12- BULK OEM $299.99 |
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M2-ATX CarPC Carputer 160W DC-DC Power Supply Cyncronix $76.23 |
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M2-ATX Robust Car PC Carputer Power Supply Cyncronix $79.00 |
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SPI (Sparkle Power) 180W ATX12V PFC Switching Power Supply Case - BULK OEM $34.99 |
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M2-ATX Robust Car PC Power Supply Cyncronix mini-box $77.50 |
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New SHARK 750W Intel AMD PC ATX Power Supply SATA PCI-E $38.99 |
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NEW Shark 750W 20+4-pin ATX Power Supply:SATA,PCIe,FanM $38.99 |
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PowerUp! 550W ATX SATA Power Supply Model PU550 $14.98 |
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SHARK® PC ATX Power Supply Intel P4 AMD PCIe SLI-Ready $38.99 |
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DELL 250W 20 PIN ATX POWER SUPPLY WITH P4 POWER - HP-P2507F3R $271.70 |
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GenMax 480W 20+4-pin ATX Power Supply $6.99 |
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550W Watt 20+4-pin +SATA Low-noise ATX Power Supply PSU $28.99 |
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Hipro HP-235NLXAK PSB-235NLXAK 235W ATX Power Supply $14.50 |
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M2-ATX-HV 140W Robust 6-32V in Car PC Power Cyncronix $74.50 |
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M2-ATX-HV 140W 6-32V in BEST Car PC Power Cyncronix $75.15 |
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Astec ATX90-3405 0950-3423 90W Power Supply Unit $23.00 |
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M2-ATX-HV 140W 6-32V in BEST Car PC Power Cyncronix $77.00 |
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M2-ATX-HV 140W 6-32V mini-box Car PC Power Cyncronix $76.50 |
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NEW 480W POWER SUPPLY for BESTEC ATX0300D5WB REV. X3 - FREE Priority Ship! $34.89 |
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Frisby ATX Desktop Full Size Mid Tower PC Computer Case w/ 350 Watt Power Supply $32.95 |
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Frisby ATX Desktop Full Size Mid Tower PC Computer Case w/ 350 Watt Power Supply $27.95 |
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PicoPSU-120-WI-25,12-25V Wide Input ATX Power Supply $50.00 |
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APEX ALA350ATX-350W ALLIED ATX12V POWER SUPPLY $46.30 |
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24 20 P PSU ATX BTX ITX SATA PC Power Supply Tester LCD $8.77 |
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Pico PSU-120 12V 120W DC-DC ATX power supply Mini ITX $39.95 |
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Logisys 480W 20+4-pin ATX Power Supply PSU w/Dual SATA - NEW $25.99 |
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Hipro HP-201PPF 203547-001 200W ATX Power Supply $30.00 |
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HP DC7100 DX6100 340W ATX SATA P4 Power Supply 349774 $25.58 |
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480W Micro ATX Power Supply Replace Sprkle FSP350-60GNV $49.89 |
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ARK ARK500/8D ATX 12V 500W Computer Power Supply (New) $13.24 |
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Cooler Master RS400-PSARI3-US Elite Power ATX 12V SATA PCI-E 400W Power Supply $30.60 |
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PicoPSU-80 +60W adapter ATX Power Supply Cyncronix 12 V $42.00 |
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ACBEL 225W ATX 20 PIN POWER SUPPLY sata API4PC51 $24.99 |
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HEC quality ATX 20pin Power Supply HEC-300AR-PTE 2xSATA in perfect working order $1.56 |
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350W Power Supply eMachine HP ATX-250-12E ATX-300-12E $5.99 |
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COOLMAX CTI-700B 700W ATX12V SLI Ready CrossFire Ready Power Supply $39.99 |
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A-power micro ATX Intel P4 power supply $10.00 |
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400W Watt ATX Power Supply P4 AMD SATA Fan 20 24 Pin $5.99 |
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Coolmax 400W ATX Power Supply 10 pcs Bulk Pack $138.49 Coolmax 400W ATX Power Supply 10 pcs Bulk Pack |
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Coolmax 500W ATX Power Supply 10 pcs Bulk Pack $160.99 Coolmax 500W ATX Power Supply 10 pcs Bulk Pack |
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Inwin IW-P250A2-0 250-Watt for V500 mATX Power Supply (Refurbished) $11.49 IN WIN understands what it takes to become a top-notch manufacturer of computer cases and power supplies. IN WIN management team has always based its operational philosophy on four important elements: innovation, service, speed, and value. |
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