Question about Bestec ATX-1956F (ATX1956F) 200-Watt Power Supply

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Hi, I want to use the DC power supply disconnected from the motherboard. When all connectors to the powersupply are disconnected the fan in the power supply is not rotating and no 12 volt DC is delivered. How to simulate the the function of the pomother board?? Ingemar

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  • 150 Answers

As long as you're not talking about hooking it up to anything else, as in a hobby project, then the best thing to do is go out and get yourself a power supply tester. Office Depot still sells Antec ones in my city for under $20, and I recently bought one or two over eBay, direct from China, for under $4--shipping incl--each!
You just plug the tester up to the PS, plug the PS into the wall outlet, turn it on, and ...there you go!
Just one word of warning--be careful with Bestec power supplies--nothing personal against the company itself, but they should all be replaced before they damage your computer. I never worked on any eMachine with one of these power supplies, which had a hardware-related problem, where there wasn't damage to the motherboard due to their Bestec power supplies. They are not properly 'fused' to protect your computer against spikes, surges, etc.

Posted on Mar 22, 2011

Testimonial: "The solution for my hooby activity I found is simple, Connect on the 24 pin contact to the mother board the green wire the the black one. Fan runs !!"

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Posted on Jan 02, 2017

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1 Answer

When I turn on the power the processor fan does not start but when I disconnect the 12volt four pin power connector the processor fan start but no display in both the state. (865 GVHZboard, 2Ghz pro, 512...


The power supply connector might be not place properly. Check the connector in the motherboard there might be one missing that is not being connected the processor connector located near the processor itself...then check also the connector of the cooler fan...it might not be connected...
If all the things is in place but still the problem is exist. Replace your power supply with new...because there might be a defective component into your power supply which is not enough to supply the entire motherboard...

Sep 19, 2011 | Intel D865GVHZ Motherboard

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MY PRINTER hp laserget 4250 dtn is displaying 57.4 error when I turned it on, what can I do? I am ofetn requested to suitch off and then to switch on but it fails to mark " Ready"


57.4 Main fan error

Hi I hope this will help

The text come from the hp manual

good luck Ian




Q2431-90912 Chapter 7 Troubleshooting 287

57.X

PRINTER ERROR

To continue turn off then on

or

57.3

EP FAN FAILURE

or

57.4

MAIN FAN FAILURE

A printer fan is not functioning.

X Description

3 EP cartridge fan, right side

(LJ 4300 only)

4 Main cooling fan, left side

Turn the printer off and then on.

57.3 Cartridge fan error (F2)

1. Reconnect the connector

between the fan and the

DC controller PCA

(location J78).

2. Replace the fan. See "Cooling

fan (right side;

HP LaserJet 4300 series

printer only)" on page 170.

3. Replace the

DC controller PCA. See

"DC controller PCA" on

page 181.

57.4 Main fan error (F1)

1. Reconnect the connector

between the fan and the

power supply.

2. Verify that the ribbon cables

are fully seated in the

connectors on the

DC controller PCA.

3. Replace the fan. See "Main

cooling fan (left side)" on

page 168.

4. Replace the power supply.

See "Power supply" on

page 188.

5. Replace the

DC controller PCA. See

"DC controller PCA" on

page 181.

57.7

DUPLEX FAN FAILURE

The cooling fan in the optional

duplexer is not functioning.

1. Turn the printer off and then

on.
2. Replace the duplexer.

Mar 25, 2011 | HP LaserJet 4250dtn Printer

2 Answers

Actually my system is having the problem like motherboard led is glowing powersupply fan processor fan spinning but when we remove memory there is no beeps from the board so what can be the problem please...


The motherboard LED is supposed to glow, indicating that the board is residually powered, after disconnection
of external power and as a warning of this condition so that you will not further disconnect or connect any
peripherals until the charge on the power retention capacitor is properly dissipated.

The Power Supply and Processor Fans should only run while power is applied, and if the Processor fan is always running at a high, possibly noisy, velocity, additional Processor Cooling may be necessary by means of a higher efficiency heat dissipation system.

If you remove memory from the board, the system should not initiate, as memory has little or nothing to do with
the problems you cite, but everything to do with the proper initiation of your system.

Buy a larger Processor Fan Assembly and those symptoms you cite which actually are problems should cure
themselves, while those symptoms you cite which are not problems will still not be problems.





Apr 18, 2009 | Gigabyte GA-8I845GVM-RZ Motherboard

1 Answer

HP desktop


if everything is ok with the cables and all are in the wright place, try powering up the pc using a different power supply.if that fails...should be the motherboard..

Mar 31, 2009 | HP Computers & Internet

3 Answers

Motherboard asus m2n-e does not boot after hard switch off


Power supply fan needs +12 Volt,
LED needs +5V, can you measure the voltages?
black: ground
red: +5V
yellow: +12V
there are more voltages on the mainboard connector:
-12V,-5V,+3.3V
pls check
If one of them is missing, your powersupply is dead

Mar 25, 2009 | Intel Motherboard

2 Answers

Mpga478b


have u check ur memory?... ur videocard and powersupply...thats the main problem of pc if it has no display....just try it one by one...hope it can help u

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1 Answer

Mother Board problem


Are there any beep/s sound that you can hear when you try to Boot your desktop? If there are none then do some check the following: 1. Please check if you have properly connected the connectors for ATX 20 pins powersupply and for ATX 12V Power Connectors. 2. Press the POWER Button to turn ON your Desktop and Check if the Powersupply FAN is spinning to ensure that there is Electricity power for your Powersupply BOX. Then press (approximately 5 secs) the Power Button if Turn Off again. If its shutdown then your motherboard is OK. But when you press the Power Button and you hear a sound like a BOAT's Horn/Fogging sound then your Power Supply is not sufficient to provide power to your Desktop or CPU.. 3. If you got 2 or more memory Cards installed in your motherboard then try to install those Memories one at a time. To determine if one of those card is defective..

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