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PSU Wires Causing Trouble

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All Rights Reserved Tom's Hardware Guide ™ Ad choices Articles & News Forum Graphics & Displays CPU Components Motherboards Games Storage Overclocking Tutorials All categories Chart For IT Pros Get Even if the connectors do match you can still run into trouble even though the power supply appears to have sufficient wattage. The first wire to test is the Power_Good; if it is between +3V and +6V, the power supply is probably doing its job.Replacing a power supplyReplacing a power supply is fairly Look at any of the power plugs in a PC and you will see that the wires are color-coded (see Figure B).Figure BMeter leads are also color-coded, with red being the Source

Back to top #4 anonanon anonanon Topic Starter Members 152 posts OFFLINE Gender:Male Local time:06:13 AM Posted 21 June 2015 - 11:36 AM Thanks for your replies. They get really hot and melt and *poof* smoke and fire. Note: Do NOT disconnect the fan on the CPU! This indicates a high or logic level 1. http://www.techrepublic.com/article/learn-to-troubleshoot-power-supply-problems/

Power Supply Problems And Solutions

Support service. Evga 450w bronze psu power cable a bit loose / easily triggered. Video card information How to select a video card How to install a video card How to troubleshoot video card problems The big fat table of video cards AGP compatibility for

  1. There seems to be power to all components, including the CPU fan on the motherboard -- when I try to boot up, the hard drive light flickers, too.
  2. You may need to consult your motherboards documentation regarding this.
  3. Obscure considerations If you're easily worried then you might want to skip this paragraph.
  4. There are capacitors inside that store power like a battery but at a much higher level!!
  5. The cause has always been a loose connection.
  6. And if you have a multiple 12 volt rail power supply in a very high-powered computer then you may have to deal with rail balancing problems.
  7. To be even more certain it is the drive, reconnect all the fans, optical drives, floppy drives, adapter cards, and anything else you removed and retest.
  8. The PCC then checks to see if PC is already on, possibly by checking the Power Good\OK signal which is generated by the PSU (Active High) or some other means.
  9. We will start from the beginning and I will list all conditions you should see at each step.
  10. Measure this on pin 8 of the 20 pin PSU connector on the motherboard that has the only gray wire going to it.

On modern systems, most motherboards draw the needed amount of current by themselves; but on older systems, or with larger power supplies, at least one disk may need to be connected solved Plug CPU Cable into Mobo, PSU Shorts Can a failing PSU cause GPU crash's ? This isn't a molex connector, however, it's an 8 pin connection. Power Supply Failure Causes Possible causes are your PC's power on pushbutton, it's wires or your motherboard is bad.

Merkez http://blog.7pcb.com/ Back to top Back to Internal Hardware 1 user(s) are reading this topic 0 members, 1 guests, 0 anonymous users Reply to quoted postsClear BleepingComputer.com → Hardware → Power Supply Failure Symptoms Is there something else that could have been damaged during the smoking cable event, that I could test somehow? It converts the alternating current (AC) supplied by the power company to direct current (DC) at all the proper voltage levels needed by the components in your PC. http://www.tomshardware.com/answers/id-2532092/random-reboots-loose-psu-cable.html Can I fix it with tape.

Watch for these terms as you read. Computer Power Supply Problems And Solutions Pdf It's also plugged into a surge protector, I wonder if that could cause any problems? Click here to Register a free account now! If it reads less than 1K ohm (1,000 ohms), it is bad.

Power Supply Failure Symptoms

If for some reason they are not correct, go back to the appropriate section and resolve the issue. If you can't test it in another PC, you can check the resistance across the ground and +5v pins (2 or 3 Blk and 4 red) on the drives power connector. Power Supply Problems And Solutions I'm about to replace the power supply and its set of cables with a new one and see if the PC works again. Signs Of Power Supply Failure How a computer uses power has gone through a lot of changes over the years.

It is possible for both the PSU and Motherboard to be bad! With back probing, you stick the red probe into the back of the connector and touch the wire down inside the plastic plug.From the charts earlier in this article, you know After trying several reboots, the PC automatically did a chkdisk routine that repaired some things. This is called the Power_Good signal. Power Supply Troubleshooting And Repair

To learn more and to read the lawsuit, click here. Because of its importance to proper and reliable system operation, you should understand both the function and limitations of a power supply, as well as its potential problems and their solutions. This page introduces you to the issues you need to consider to maximize the chance that an ATX power supply and motherboard will work together properly. Disconnect the wire's connector from the motherboard.

The motherboard itself uses only +5V. Troubleshooting Power Supply Computer There is usually enough room to fit the tip of the probe into the rear of the plug and make contact with the metal pin on the end of each wire Most of the things mentioned here are either more detail than you need to know or problems which rarely crop up.

It is then derived from the -12v on the motherboard.

Rotor -- I'll power down and take a look at the socket now. This will show whether the supply is operating correctly and if the supplied voltage is within the proper tolerance range. Experience can help a tech diagnose problems caused by a faulty power supply that would normally be overlooked by a novice. How To Check If A Power Supply Is Working It also may be labeled on the mobo silkscreen.

If you can't test it in another PC and you don't have a meter, You can try unplugging the power from it (the 4 pin connector) and then try starting up For example, you might see an ATX-style 250-watt power supply or an LPX-style 200-watt power supply.LPX style is a descendant of the Baby-AT, AT/Tower, and AT/Desk type of power supply and Your cache administrator is webmaster. Part of the power cable farther toward the power supply box was also blackened, though maybe just from smoke.

If you're buying a new power supply then the safest choice for the long haul is to get one with a 4+4 power cable because it's compatible with both 4 and Important facts and precautions regarding ATX PSU's An ATX PSU requires what is called a Power Supply or PSU On signal (Active low) to actually turn on. While we are on the subject, You must take proper precautions against ESD or electrostatic discharge. All servicing should be performed by qualified personnel only!

If the socket is truly a 8 pin and you have been using a four pin that could contribute to the problem. I replaced the power supply and the data cable. Make sure the airflow path is unobstructed, that the processor heat sink or cooling fan is in place and operational, and that the power supply fan is working quietly and correctly.Testing Warning!I have seen and heard that powering up a system with only the motherboard connected may not provide enough load on the PSU and can cause it to fail.

Good Luck Roger Fortune Cookie says: Fortune not Found: Abort, Retry, Ignore? Suspect the motherboard. Unless you have a very good reason or it is the last resort in troubleshooting, I recommend to never plug in or apply power to an ATX PSU without a load! Ask a new question Read More Power Supplies Crash Cable Power Surge Constant Reboot Components Surge Protector Related Resources solved Power surge from loose psu cable?

Some older AMD dual CPU motherboards have them. Because the physical shape (form factor) of the power supply relates to the case, some of this information also relates to the type of chassis or case you have. However Get the adapter right away before any further damage occurs. Consider our Live!

It depends on the age of the power supply. Back to top #6 rotor123 rotor123 Moderator 8,025 posts OFFLINE Gender:Male Location:New Jersey Local time:06:13 AM Posted 23 December 2012 - 02:57 PM What I was suggesting is that if Please try the request again. When the PSU has completed enabling its primary converter and the +5 and +3.3 output voltages are deemed stable, it asserts the Power Good\OK signal (Active High).

We have now either rectified any problems with or successfully tested the 5v Standby voltage, The +-12,+-5, and +3.3 voltages, The PSU On signal, and the circuitry that produces and responds