Question about Dell (PS-5251-2DS) (M0148) 250-Watt Power Supply

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How can i use this power supply in a stand alone situation to DC cooling fans only? if i just plug it in i get no output voltage.

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Look at the ATX connector.
http://www.smps.us/atx-connector-20-24pin.jpeg
Now you need to connect pins 15 and 16. They are normally Green and Black. All you are doing is connecting the signal the PSU looks to turn on into a ground.

So the best way and cheapest way it to bend a paperclip and put one end in the green wire and another in the black one.

I use this trick almost every time I am fixing computers. It specially awesome when you want to run a water cooling system without turning on the computer.

Posted on Apr 25, 2010

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Posted on Jan 02, 2017

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1 Answer

I have an Astec DS 1500-3-001 power supply that I want to use a a stand alone PS. What pins do I need to connect to get +12v DC output with 120 VAC Input.


Mike
I take it that this is a standard power supply out of a PC (switch mode)
These are a common connection point on any brand PC
Use a DC Voltmeter to find the Ground, +5 Volt & +12 volt wires to power your 3.5 inch Hard Drive. The 2.5" Hard Drives (laptop) has only Ground (Black) & +5 Volt.

Oct 30, 2014 | Computers & Internet

1 Answer

Getting 120 v to white plug where it first plugs into board should i have power reading at fuse?


yes after to the fuse you must have a reading of 120vac if none the fuse get busted. if the 120v is present then it will goes through the rectifier bridge diode and primary capacitor of the power supply board to have an stand by voltage at the power supply board. when you press the power button it will send signal voltage coming from the main board to turn on the power supply board. the you will need to get an output voltage at the power supply board of 5v dc, 12v-16vdc and 24v to turn on the all the circuit, the main board sound amplifier and the inverter board for screen back light.if you can get those supply the tv unit will not turn on.

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1 Answer

Ir400 fan numbers


II. FANS
A. Arrangement and Functions
Feeder fan
Fixing assembly heat discharge
fan 1***
Fixing assembly heat discharge
fan 2 ***
Laser driver cooling fan
Laser scanner motor cooling fan 1
Laser scanner motor cooling fan 2
Cleaner heat discharge fan
System cooling fan
Reversing guide cooling fan
Low-voltage power cooling fan 1
Low-voltage power cooling fan 2
Reader cooling fan 1
Reader cooling fan 2
Drum cartridge cooling fan 1
Drum cartridge cooling fan 2
Drum cartridge cooling fan 3
DC controller PCB cooling fan
Scanner motor cooling fan
Function
Draws copy paper to the feeding
belt. Helps feeding.
Discharges heat from around the
fixing assembly.
Cools the laser driver PCB.
Cools the laser scanner motor.
• Cools the laser scanner motor.
• Insulates the drum cartridge
against heat from the fixing
assembly.
• Discharges heat from the
drum cleaning assembly and
fixing assembly.
• Discharges heat from the DC
controller PCB.
Discharges heat from the
composite power supply and the
DC controller PCB.
Prevents curling of paper.
Discharges heat from the lowvoltage
power supply.
Cools the reader (image processor
PCB, laser driver PCB).
Cools the drum cartridge.
Cools the DC controller PCB.
Cools the scanner motor.

Aug 28, 2012 | Canon imageRUNNER 400S Copier

1 Answer

Power but no picture


you need to check weather the power supply has complete output dc voltages 5v stand by, 5v detect 12v-16v for audio and tuner and 24v for back light. if just only an stand by voltage, the cause is either the power supply failed or the main board detect an error in the inverter board .

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1 Answer

Canon ImageRunner 330s Error E805, Can't Enter Service Mode


FM1 Heat discharge fan Cools fixing unit.E805 0000 Fan failure
only one in this copier>
The fan is faulty. -
Check the fan connector.
- Replace the fan.
- Replace the DC controller PCB.


Switching between full-speed rotation and half-speed rotation is controlled as described below.
1) Full-speed control
When the CPU on the DC controller outputs a fan full speed signal (FAN_FULL), the fan drive voltage switching circuit supplies a +24 V fan drive voltage to turn
the heat exhaust fan at the full speed.
2) Half-speed control
When the CPU on the engine controller outputs a fan half speed signal (FAN_HALF), the fan drive voltage switching circuit supplies a +16 V fan drive voltage to
turn the heat exhaust fan at the half speed.

E805-0000 (Main body fan error)
When the cooling fan of the main body starts, the fan lock detection signal (FAN_LOCK) has been held at the "H" level for longer than the prescribed time.

also check your low-voltage power supply

Apr 22, 2012 | Office Equipment & Supplies

1 Answer

I bought this tv from a friend, It worked for 1 day perfect,, Picture was great, the t.v. worked great. The next day i came home from work and when i turned on the t. v. It wouldn't come on, just a...


hi good day

the first thing you can do is to unplug the tv unit not to used for an hour to discharge excessive voltage at the power supply board to reset the dc supply at the main board. then after an hour try to plug and turn it on. if still doesn't work at this time you will need to make a voltage checking if you know a basic electronics trouble shooting or you want a DIY just follow some of my steps by steps repair instructions.first you must need to check the output dc voltage at the power supply section, if their is an output which supply the whole circuit just be careful since you are dealing with some high voltage. the supply at the indicator light at the front is just only the stand by voltage. you will need to check the B+ voltage which around 110vdc at the horizontal section which turn on the whole circuit. you can used a digital tester to make a voltage checking just set to dc voltage. if their is no presence of 110v dc at the horizontal the vertical and the tuner section will not turn on. usually the cause problem like this is bad horizontal output transistor and an open resistance circuit going to transistor.check also for an open or defective resistor replaced it with same value.hope this can be helped just let me know if it works feel free to ask further solution thanks for using the fixya service good luck.

Dec 25, 2011 | Toshiba Televison & Video

1 Answer

My copier is having a system error E-805


E805 0000 Fan failure
only one in this copier>
The fan is faulty. -
Check the fan connector.
- Replace the fan.
- Replace the DC controller PCB.


Switching between full-speed rotation and half-speed rotation is controlled as described below.
1) Full-speed control
When the CPU on the DC controller outputs a fan full speed signal (FAN_FULL), the fan drive voltage switching circuit supplies a +24 V fan drive voltage to turn
the heat exhaust fan at the full speed.
2) Half-speed control
When the CPU on the engine controller outputs a fan half speed signal (FAN_HALF), the fan drive voltage switching circuit supplies a +16 V fan drive voltage to
turn the heat exhaust fan at the half speed.

E805-0000 (Main body fan error)
When the cooling fan of the main body starts, the fan lock detection signal (FAN_LOCK) has been held at the "H" level for longer than the prescribed time.

also check your low-voltage power supply

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1 Answer

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I just found my Canon 5000F scanner to have a power supply outputting 3V DC instead of 12V DC. I replaced it with a 12V DC Power Supply from Tandy rated at 1.5 amps. I had the scans getting darker by the day and sometimes completely black. Now I have great scans again. Just test the voltage at the plug that supplies the scanner for a healthy 12V DC with a multimeter.

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1 Answer

Can you supply pinout for Dell AA23300 Power Supply ?


On the main plug there is a single green wire. Jumper the green wire to any black groung wire in the plug and the fan will start and you will have output.

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1 Answer

HP zd8000 will not charge battery or run on power cord


check the dc jack probably is loose that cause the batterie dont get charge

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