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NEED A POWER LEAD

Hi dont know where to buy a power lead for a medion pockect pc no mdppc250

cheers

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Your best bet is ebay.

Posted on Mar 16, 2008


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2 Answers

Power supply box has green light but my computer wont turn on


The power light on could only mean the light on the psu is gettting power

Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive boot up

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them they could be faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty or just replace them they could be faulty ?
one bad lead will end with a computer error a computer needs its connections continue its cycle and have an end to function properly

even something as small as an electrical extension or a faulty fan lead can cause this problem computer needs all of the data and electrical current to travel through every device and to have an end to be able work properly

a motherboard and a hard drive any leads between them will fail before your motherboard or your hard drive if its a flat ribbon 40 pin type IDE replace it this will be the first to fail check all electrical extensions make sure they are securely seated even the cd/dvd floppy drives need to have current go through make sure these drives are working

make sure your computer ram modules are securely seated with no dust in sockets also Cmos battery has charge with no dust in the sockets
hope this helps

Aug 20, 2011 | Bestec (ATX100-5) (ATX1005B) Power Supply

1 Answer

Problem with the HP Bestec ATX-1956D 200w HP Part No 0950-4106 Power Supply What voltage is P7 connector on this p/s and what is the pinout of this 3 pin connector... 2-black leads an a green lead?


Most computer testing facilities will test your current power supply for free. A replacement is very inexpensive to replace. Bestbuy, MicroCenter, small computer shops and buy replacemnent from Amazon.com, newegg.com.. Just make sure you have the correct information for your replacement. The model number on the power supply would be your best bet in most cases. Good luck and have a great day. I buy power supplies as low as $15 dollars Generic

Jan 16, 2011 | HP Bestec ATX-1956D 200w HP Part No...

1 Answer

How can you tell if a Dell power supply for a PowerEdge 2900 is good? Should the lights at least indicate when power is connected even with the PS is removed from the machine? How do you best determine if...


You cannot test the power supply on the bench just by connecting it to the mains power. You need to know which pins on the connector to activate the power supply and you need to connect a load to the power leads.
The best way to test the power supply is to leave the power unit connected to the computer power up the computer and test a spare 4 wire power connector with a multi-meter. Leave the other power leads connected to the various drivers.
If computer's power LED should light up then test the voltages.
The Red and black wire should read 5 volts.
The Yellow and black wire should read 12 volts.
If the power LED does not light up, check the mains lead in another appliance to see if the mains lead is OK.
If the mains lead is OK then most likely the switch mode power supply has died.

Dec 28, 2010 | Dell 930-Watt Power Supply

2 Answers

The power supply came with no manual. There is no P IV power lead. There are two aux power leads. (1) four wire (O,B,R,Y) and (1) six wire lead (B,Y,B,Y,B,Y) The original power supply P IV lead has four...


As you've noted you need two Black wires (Ground), and two Yellow wires (12 Volt),
for a 4-pin ATX +12 Volt power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

If you are not using the 6-pin PCI Express power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#pciexpress

,rob the 4-pin ATX +12 Volt power cable connector, and wires from the old power supply.

Splice the wires of the 6-pin PCI Express to them.

Note:
Orange wires are 3.3 Volt
Red wires are 5 Volt
Yellow wires are 12 Volt
Black wires are Ground wires.

You need two Yellow wires, and two Black wires.


Or if you have a spare 4-pin standard Peripheral power cable from the power supply,

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral

,buy and use an adapter power cable.
Example,

http://www.directron.com/p4atx.html

Nov 27, 2010 | Coolmax Technology COOLMAX M500B 500W EPS...

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Power supply nps-730ab getting red light in middle flashing and bottom green light on constantly lite. however not functioning properly. have two power supply so this is a redundant system, but still need...


Replace your PSU then test all leads that are attached to your hard drive sounds like a faulty lead of some sorts then
try replacing all the leads that attach to your hard drive including electrical extensions + IDE,SATA and the ones that attach from your motherboard to hard drive
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty or just replace them they are probably old and faulty because a computer has to have an end to the circuit any fulty leads will lead to no boot up
good luck

Oct 01, 2010 | Dell NPS730AB 730Watt Power Supply

1 Answer

I have a question, the Computer doesn't start, there is only the power led on on the back of the power supply, can you assist in troubleshooting the issue


Replace your PSU then test all leads that are attached to your hard drive sounds like a faulty lead of some sorts then
try replacing all the leads that attach to your hard drive including electrical extensions + IDE,SATA and the ones that attach from your motherboard to hard drive
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty or just replace them they are probably old and faulty because a computer has to have an end to the circuit any fulty leads will lead to no boot up
good luck

Sep 17, 2010 | Hi-Pro Hipro 200W ATX Power Supply p/n...

1 Answer

Pc wont turn on


1. Remove all USB devices such as printers, mp3 players etc etc.
2. Remove the power-cable and the battery
3. Press and hold the power button for 30 seconds
4. Put the power-cable back in but not the battery and none the USB devices.
5. Turn the computer on

Also check the condition of the USB ports if it doesnt work and the fuse. If this doesnt work then I would recommend a repair.

Jan 19, 2009 | System Power Supplies

1 Answer

HEC-250BR SCHEMATIC


This page seems to contain all the info you need but it is unusual that the supply does not have a chart defining lead colors and output capabilities.
http://www.wikihow.com/Convert-a-Computer-ATX-Power-Supply-to-a-Lab-Power-Supply  

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1 Answer

Battery charger


Most lead acid batteries can be charged with a boost, this can be 10 AMPs, but normally have a current sense circuit so when the battery reaches it knee it goes into a trickle charge.

Jul 18, 2008 | System Power Supplies

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