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PSU Voltage Problem


We will start from the beginning and I will list all conditions you should see at each step. A hard disk or fan may be enough, but with some older supplies a load of at least an amp on the +5V. The problem is that some problems are intermittent.. Are you suggesting it might not exhibit low voltages and still be overloaded? have a peek at this web-site

WiedergabelisteWiedergabelisteWiedergabelisteWiedergabeliste Alle entfernenBeenden Das nächste Video wird gestartetAnhalten Wird geladen... Related Resources solved How to tell what is sending way too much voltage through system without risking hardware solved Am I putting too much voltage / heat on my 6700k solved Wird verarbeitet... Try a different stick of RAM if necessary. view publisher site

Power Supply Problems And Solutions

if not pull the HD and throw the PC in the garbage (err... Unplug the drives power cable first! Wird geladen... The bottom line is don't believe just because you have a Power Good\OK signal that +- 12V is OK, especially under load.

  • Of course, at this point, the computer may not be worth fixing at all, especially if the psu failed step 1.
  • Mobos cost more and replacement is more involved so save that for last.
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  • If I invoke heavy write operations, I can usually get the error to occur, but not always.
  • Older power supply designs like the True 380s require a higher load than newer ones to regulate voltages correctly.
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  • It is then derived from the -12v on the motherboard.
  • Here are my results,3.3 vdc testing at 3.95 vdc at 6.15 vsb at 6.212 vcd at 14-12 vcd at -14.4These voltages are with everything unplugged from the PSU and just the
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Check the Cooler Master site for your specific info. Note that there is less than a 5% chance the PSU just can't handle the load of a hard drive. The diagnosis of a bad motherboard may be correct, but the assumption that the psu is not also bad can result in great confusion and disaster. Power Supply Troubleshooting And Repair At this point replacing the PSU, The motherboard or both will resolve your issue.

This is what I do, saves a ton of time. Power Supply Failure Symptoms These instructions are part of your system or graphic card BIOS and are typically located in an EEPROM or similar memory device. Instructions cards Operation Sheets Control Panel & Bezels Jukebox Title Strip Creator Tutorials Component markings... http://www.tomshardware.com/forum/365310-28-voltage-problem-computer It gets this signal from the motherboard via the green wire connected to pin 14.

Once you have this resolved, skip the following and go on to the next section. Computer Power Supply Problems And Solutions Pdf Once you have this resolved and the system powers up OK, Congratulations! You are done. All rights reserved.

Power Supply Failure Symptoms

If you want to isolate a problem on your PC that is related to the PSU or related circuitry stick with me and read on!

Thanks for your helping, I very appreciate it. Power Supply Problems And Solutions If you still can't get +12v, either the PSU is bad or the motherboard is killing the +12v. How To Check If A Power Supply Is Working Maybe someone else will have an idea on how to avoid that, but I really wanted a second opinion from a community way smarter the me. :) I also suspect it

Simply testing a system by connecting another power supply or using one of the many common power supply testers with a simple green light is dangerous and can lead to doubt http://hcsprogramming.com/power-supply/spooky-psu-problem.php What is important is to find out why this PSU On signal is not at the expected logic 1 state. All fans (except CPU and PSU), optical drives, floppy drives, USB devices are disconnected and all adapter cards including any graphics adapter are removed. Now plug the PSU back in, make sure its power switch is set to on or the 1 position and recheck the 5v Standby voltage. Signs Of Power Supply Failure

Definitions for each can be found in the UPGRADE.HLP file located on the CD-ROM or in Appendix A, "Glossary." Reviewing these terms before and after you read this chapter will deepen My spec for this computer is i7 3770k, gtx760, 750w cooler master, b75m-a mother board. At this point it should be at a logic 1 state or greater than ~ +2.5 volts keeping the PSU's main outputs off. Source look for blown caps / ICs reseat all components turn on.

My voltage on 12V was 12.02-12.00 and 5V was 5.04-5.01 while invoking writing operations in all the drives. Power Supply Failure Causes For office desktops you are looking at $400-$500 if you buy direct from HP refurb. Find out if the power on pushbutton is of the normally open or normally closed type.

This handy tip from PC Advisor reader Andy Scott explains how to check your PC's power supply, and find out what's wrong with your PC.

They should read within 5% of the specified voltage. I even tried another power supply [after I unknowingly fried my new motherboard] and it still doesn't work. Wird geladen... Über YouTube Presse Urheberrecht YouTuber Werbung Entwickler +YouTube Nutzungsbedingungen Datenschutz Richtlinien und Sicherheit Feedback senden Neue Funktionen testen Wird geladen... Power Supply Troubleshooting Pdf These issues often mysteriously fix themselves, only to return later. "These errors can be more frequent when you're doing something that requires more power than is normal, and they will usually

Peaks and troughs of course may not be its fault but that of a dirty feed (local interference - any heavy electrical machinery nearby?). –pnuts Jan 17 '13 at 12:54 Get the answer Ask a new question Read More Power Supplies Computers Systems Motherboards Related Resources solved power supply voltage is under and over CPU Over Voltage Error and Power Supply If the PCC finds the PC is not on, it interprets the power button being pressed as a request to power up the PC and asserts the PSU On signal (Active have a peek here There will be many cables to disconnect – at least one to each system component and probably two to the motherboard.

I normally go up one size when replacing power supplies.Replacing a power supply is pretty straightforward. Something to mention also is that most manufacturers have built in preboot diagnostics for their hardware that you can run. This tells the PSU to remain off. Ask a new question Read More Power Supplies Computers Boot Components Related Resources How detrimental is overclocking to the PC?

A malfunctioning power supply can not only cause other components in the system to malfunction, but it also can damage the other components in your computer by delivering an improper or The tables below show the pin-outs for AT and ATX supplies (Figures C and D) and the Molex 4-pin drive connector (Figure E).Figure CFigure DFigure EAlways have a spareSome problems cannot How would I check if the PS is good without purchasing a new PS? (I have no know-good PS to swap in) Edit: The ports fail at different times usually, some Those will typically not show in MB monitoring software. –Tonny Jan 15 '13 at 19:29 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote accepted It

A replacement supply should provide at least as many watts as the old one. People spend hours discussing their processor speeds, memory capacity, disk storage capacity and speed, video adapter performance, monitor size, and so forth, but rarely even mention or consider their power supply. Nächstes Video KAW Power Supply Hack - Part 2 : Build - Dauer: 1:36 Mike Tranchemontagne 249 Aufrufe 1:36 KAW Power Supply Hack: Part 3, Demo at 100 Vac - Dauer: Check the jumpers on the hard drive.

If it is still not a logic 1 your mobo or PSU is bad. You may need to consult your motherboards documentation regarding this.