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PSU Issues - Is Pin 15 (ground) Neccesary?


americanbrianOct 13, 2008, 3:40 PM Thats another point well made. High voltage on the other hand will almost always kill you and if it doesnt unlike 110 it will severely injure you. Aside from the main power connector to the motherboard, don't forget to provide power to your hard drive(s), optical drive(s), and floppy drive. If the table below provides an "Official cable/connector maximum wattage" then that specification has spelled out the maximum wattage.

The power up process is now complete. Appliance classes Alternatively, a European GS or VDE standard may have been attached, covering class 2 implicitly. AT Power Supply These are the older of the power supplies. Many power supplies come with a 4+4 pin 12 volt cable which is compatible with both 4 and 8 pin motherboards. Bonuses

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Sympton: The PC still is not powering up and booting but the CPU fan is spinning and the hard drive spins up. If it is low or logic level 0 The PSU is most likely bad unless the motherboard is pulling it down which could cause the pull up resistor in the PSU That is not to say, however, that a high-quality power supply is a waste. The power cable which plugs into the 4 pin connector has two black wires and two yellow wires.

Voltage Sensing The +3.3 VDC remote sensing wire (brown or orange) is connected directly to the orange +3.3 VDC at pin 11 of the power connector (pin 13 if a 2x12). And one with 2pins, the non grounded ones which I am using. Make sure the Power cord is seated fully in both the outlet and the PSU. 4 Pin Molex Connector The sense wire will usually be of a lighter gauge (22 AWG) than the power wires (16 or 18 AWG) and its purpose is to monitor the voltage at the connector

But also people dealing with HV are more careful and DON'T use Fingers as a voltmeter. 3rd - Yes, current flowing from one hand across the heart on it's way to Power Supply Connectors This is called the Power_Good signal. It's as old as the hills but is still very widely used. http://www.aitechsolutions.net/pchwtrblsht.html Remember to test the construction and outputs with a voltmeter before you connect it to your RepRap!

Pinouts 01 +3.3V (orange) 02 +3.3V (orange) 03 Ground (black) 04 +5Vdc (red) 05 Ground (black) 06 +5Vdc (red) 07 Ground (black) 08 PWR-OK (gray) 09 +5V VSB standby Voltage (purple) Atx Power Supply Repair See my How to Troubleshoot a Computer That Won't Turn On guide for more help.Are you running in to trouble testing your power supply or following the directions above?If you still The resistance of connectors tends to increase as they are plugged and unplugged so after enough uses they can overheat and even melt when passing a large current. What is best way to connect these wires (preferably without cutting them) ?

  • You may want to use this output instead.
  • If you leave the two pieces separate then you can plug the 20 pin piece into a 20 pin motherboard and leave the 4 pin piece unplugged.
  • See Balancing_ATX_Supplies.
  • You're supposed to use the left half of the cable shown above when plugging it into a 4 pin motherboard connector but the right half will also fit.
  • Pinouts Most connectors have pin numbers on the top, but if not, when viewed from above with the key pointing downwards, pin 1 is in the top left.

Power Supply Connectors

Problem is, if you attach a ATX power supply to the mains it will simply do nothing. http://www.informit.com/articles/article.aspx?p=31105&seqNum=4 This prevents removal of Voltage, which if not removed results in death.It is not the voltage that kills, It's the current, and length of time, that kills. At Power Supply In almost all cases it's not needed. Atx Power Supply Wire Colors By Faithe Wempen | June 26, 2001, 12:00 AM PST RSS Comments Facebook Linkedin Twitter More Email Print Reddit Delicious Digg Pinterest Stumbleupon Google Plus Of all the components in a

Most newer power supplies don't provide -5 volts in which case the white wire is missing. rasmusp123Oct 10, 2008, 4:13 PM I have always wondered, how important is it to ground my computer?My current computer (and monitor) is not grounded, and my older ones have never been Some specifications clearly spell out the maximum allowed wattage. Here we describe on how simple it's to use them, or what to do if it's not entirely trivial. 24 Pin Atx Power Connector Function

The only reason i know, is so it doesnt get damaged during a thunder storm. 39 answers Last reply Oct 20, 2011 More about grounding computer neccesary randomizerOct 10, 2008, 4:26 You still have only the same old 20 wires and pin&socket connectors that you would have if you plugged it directly into the motherboard. All servicing should be performed by qualified personnel only! Content is available under GNU Free Documentation License 1.2.

My players went from 100% murderous cretins to 100% nonviolent diplomats; how can I achieve a middle ground? 4 Pin Power Connector If the cable won't slide in easily then you're probably trying to insert the wrong kind of cable. Comprende?

Pinout Pins 1 through 4 Pins 5 through 8 Description Wire color Pin number Pin number Wire color Description ground black 1 5 yellow +12 volts (12V1) ground black 2 6

If you use one of these adapters then be sure to plug the 4 pin peripheral connectors into separate cables coming from the power supply. If you still do not have +12v, Either the PSU, The motherboard, or the hard drive are causing the problem. If the PC is already on, it sets a flag that provides a signal to the BIOS and/or the OS. Atx Power Supply Troubleshooting I got already 2 frames, so this weekend I will cut the one and see best way to weld or screw them together. –Thylvin May 10 '16 at 8:34 add a

Normally this kind of peripheral connector has "fan" printed on it to warn you. Contents 1 Safety 2 Electronics prepared for PC Power Supplies 2.1 Base Load 2.2 List of PC-PSU enabled electronics 3 Required Minimum Specifications 4 Modifying a PC Power Supply for general That clearly fails the class III SELV requirements. But it happens.

They are usually 12 volt only cables intended for fans. In North America and some other countries, three phase power generally does not enter homes. First check the +5v on pins 4, 6, 19, and 20 on the PSU's 20 pin connector. There you can plug connectors already fitted to the PSU's cables directly into the RepRap board, no modification or opening of the unit required.

Possible causes are your PC's power on pushbutton, it's wires or your motherboard is bad. and can nail you in the right circumstances..