Question about Okia / 450-Watt / ATX / 80mm Fan / 20/24-Pin / Power Supply (OKIA450ATX) Power Supply

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Where to plug case side fan

No schematic. Okia psu. On the 4pin plugs what are color volts?

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Pinout Pin number Wire color Description 1 yellow +12 volts 2 black ground 3 black ground 4 red +5 volts

Posted on Jan 27, 2009

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Heat and ac not working...fans not blowing


check first if 12 volts being supplied to fan plug when accessory switch with car keys and fan switch is turned on. Use a volt meter or a 12v light globe with a earth to one side and a wire for test side. If voltage found then check color of old unit against color of wires on new unit plug. are they in the same location of the two plugs. If no voltage found then you have to start at fuse and then possibly a relay or the switch on the fan control panel.

Nov 08, 2013 | Chrysler 2003 Town & Country LXi

1 Answer

Power Supply Dry Run Problem


You need to have the case's power switch plugged into the jumper pin header of the motherboard. Plug in the PSU into the 120 volt mains, enable the PSU via the switch (the one you turned on in the video) and then press the power switch on the computer CASE.
That should do it!

May 29, 2013 | Computers & Internet

1 Answer

The evaporator fan is not working. Is there a schematic online for this Refrigerator?


Hello,
I am not sure if their a schematic online for that brand but the circuit is going to be like this

120 volts at plug
neutral side of fan wired directly at all times
Hot side from plug into thermostat
out of thermostat into defrost timer
out of timer to evap fan motor
hot from,plug to t-stat to defrost timer finally to evap. fan plus neutral side at evep motor makes it run

Aug 15, 2011 | Sanyo SR1031S Refrigerator

1 Answer

While computer's working, fumes come out. PSU is replaced. However the floppy power connector is plugged onto system fan pins! on the mobo. That means ground-12V power-ground sense-ground ...


The PSU has some overload protection but not the Mobo power buss. If you were lucky, you only shorted the PSU 12/5 volt output to the Mobo ground which took out the PSU. BUT if the PC will not start-up the 12V power buss on the Mobo was probably damaged as a result of accidentally grounding it with the fan plug.

It's impossible to identify which logic has been damaged without a schematic, and even if you had one, you would need specialized tools and parts to repair the board. Sorry, but the days of repairing these kinds of components are long gone.

If you have any additional questions contact me by clicking on the "Add a comment" link located under your problem description on FixYa. Also, if you believe that this information was helpful to you, please rate my solution using FixYa's "Solution Helpful" rating scale.
Best regards,
Yavacotech

Jun 25, 2011 | Foxconn M61PMV Motherboard

1 Answer

How do I find a manual for the ULT40278. I'm trying to figure out you would connect 2 fans when some motherboards have only one fan connection?


Motherboard fan connectors typically use a small 3-pin which looks like this: zero_awake.jpg
the left connector is a female connection (the side with 3 holes) the middle and right are male connections, has 3 metal pins:
  • Black: GND (ground)
  • Red: +12VDC or +5VDC (12V or 5V DC - direct current)
  • Yellow: Tachometer signal (used to read fan speeds)
NOTE: Wire color may vary, and some fans or motherboards may control fan-speed.

Some fans use a 4-pin connection, which is generally a CPU fan connector but not always:
zero_awake_0.jpg
This pictures a 4-pin connection, but may look different from other 4-pin connections because the wires are covered in a black sleeve, which keeps them safe from harm and to reduce potential negative affects on airflow created when there are lots of loose wires inside a computer case.

zero_awake_1.jpg
This photo shows a 4-pin connection attached to a motherboard next to a 3-pin connection in a motherboard. While it is not recommended in the case of the CPU's fan, in the case of other internal case fans with a 4-pin connection, it is possible to plug them into a 3-pin connector of the motherboard, but the ability to control fan speed, which is controlled in the 4th pin will be lost.

Though sometimes computers have a way of controlling fan speed on a 3-pin or 4-pin connection even without the 4th pin, such *** voltage regulation and reading tach. feedback. These things are typically things a general user doesn't need to worry about unless their computer is running particularly hot and causing trouble.

In which case, it might be worth investing some money in a fan controller, which takes a power connection, several fan connections (varies based on the controller you get) and gives you the ability to control fan speed externally on your computer case. My controller has nice dial knobs, though some "fancy" controllers have a display and up and down buttons. (Fan controllers would be at your own discretion in terms of price, you can get them cheap all the way up to seemingly ridiculous expensive)

In the event of not having enough 3pin or 4pin connections on a motherboard, it is still possible to add case fans by way of 4pin molex connections:
zero_awake_2.jpg
A female molex connection

zero_awake_3.jpg
A male molex connection

Some case fans run exclusively through these connectors, others have a combination of a 3pin (or 4pin possibly, though I've never seen this combination) and a 4pin molex connector. In this case, the molex connector can connect directly to a cord from the power supply and run the fan. It is possible to run case fans without having them connect to the motherboard at all! Which makes it possible to connect more fans, with less available connections for your fans on your motherboard.

If a fan is a certain connection (any of the 3) and you need to convert it, for example:
  • a 3pin to a 4pin molex because your motherboard doesn't have enough 3pin connectors for all your fans,
adapters are available to change one type of connection to another, at many online retailers (such as newegg.com, amazon.com, or other electronic supply retailers) and some retail stores, Best buy might have something, though you'd have a safer bet at a store like Micro Center which is more specialized for PC building or an alternative PC/electronic store.

To ensure you solve your problem, just be sure to familiarize yourself with the motherboard you are planning on buying (or have) and the fans you plan to have inside your computer. It can be a bit more work to check the specs on the fans and motherboards, but a little work saves hours of headache later.

Nov 03, 2010 | Ultra Products Ultra ULT40278 XT MicroATX...

1 Answer

Power LED is On but system doesnot start ?


hello, I have a solution for u i think it may help for u.
your problem is:

When u press the start button... the power LED comes on but there is no POST beep or BIOS screen or boot up. The SMPS fan and Processor fans also dont come on at all. there is a small LED next to the SMPS plug on the motherboard that does light up when the system is connected to a power source.
Part of the system configuration is the kind of PSU you have in your system.
SOLUTION IS
So, what kind of PSU?

Try to borrow a known good PSU. Or better yet, see if you can test your PSU in another working system. If you cannot do that, try to borrow a DMM to measure the voltages. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.

You can turn on the PSU by completely disconnecting the PSU and using a paperclip or jumper wire to short the green wire to one of the neighboring black wires.

This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead.

Jul 01, 2010 | ASUS P4P800 SE (890552603657) Motherboard

1 Answer

Friends custom-build PC has no power


Seems reasonable. Take the motherboard out of the case,  first to see if it will work outside of the case. Sometimes boards short to the ground due to a screw or other metal getting between them and the case. Try to run it with as little hardware hooked up as possible. You don't even need a hard drive to post the BIOS.  

Mar 12, 2009 | Okia 420w UL Approved ATX Computer Power...

1 Answer

Dead emachine t3104


In most cases this means that your motherboard is fried, but if you can get your hands on another power supply, try plugging it into your board just to be sure.

Feb 19, 2009 | E-Machines eMachines Desktop PC

1 Answer

Busted component


Getting a schematic is rather doubtful. You might be able to get a general idea of the circuit from somewhere on the 'net.

Was the power supply dead?

ATX style power supplies have both a standby and main section. The standby supplies a low current +5 volts to a small portion of the motherboard.

If the component failure is in this section, this standby voltage will be missing or incorrect, and the computer will be dead- won't power on at all.

I've seen a number of catastrophic failures in this standby circuit, and repair isn't suggested or economically feasible, especially as some parts often poof beyond identification.

When the pwr button is pushed, the main section comes on, and supplies +5 (Red wires), +12 (Yellow wires), +3.3 (Orange wires), -5, -12. Look here for this info http://pinouts.ru/Power/atx_v2_pinout.shtml

Voltages are precisely regulated, and any substantial deviation (more than a few 10ths of a volt) indicate a problem, especially on the +5 & +3.3 lines.

Jul 07, 2008 | Okia / 450-Watt / ATX / 80mm Fan /...

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