Question about Intel D865GBF Motherboard

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Powers off on its own

What type/or volt should the power supply be?

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  • Roberta Smith
    Roberta Smith May 11, 2010

    how quickly does it power off ? is the cpu fan turning... and have you tried removing everything and seeing if you can boot up to just setup ?

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  • 152 Answers

You should use 400 watt SMPS

Posted on May 27, 2009

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How to fix couple of DELL desktops where I plugged them into 220 volts Power supply when they were set for 110 volts? More details below.


you could try replacing the power supply. if it still does not work, you probably fried the processor or motherboard. (or both). just make sure the replacement power supply has the same type of connectors on the power leads to the motherboard, hard drive, etc.

Aug 15, 2015 | Dell OptiPlex Computers & Internet

1 Answer

Lost 12 volts


If it is under warranty, it is coverd.

If you are wanting to try fix it, the 12 volt section is only marginally regulated but there is voltage reference IC, type 431 where you can start. If you are not seeing any voltage at any terminal it is probable a capacitor failed. Also check the other electrolytic capacitors. Use a tester as the failure may not show any stress visually, or just recap the entinre power supply, The single large capacitor with typically a 400 volt WVDC or higher is usually fine if just the 12 volt section lospower.. Use high ripple types or polymer types as there are differences internally..

Apr 11, 2012 | I-Star (TC-350P-ATX) (TC350PATX) 350-Watt...

1 Answer

Netgear prosafe 24 port 10/100 switch. I have no power at all. How can I repair it?


If you know you power supply is out....go to radio shack or walmart and buy a wall power supply converter that has a complete set of different type jack to plug into. The voltage ranges from 1.5 volts to 12 volts. If your power supply is good then you need to replace the unit.

Jan 08, 2011 | Computers & Internet

1 Answer

My mixer wont power up. the only light that comes on is red led +48 v


This MAY be a power supply problem. We need to find if the power supply is putting out what it is supposed to. Using a meter, put one probe in pin 1 (ground) of one of the mic connectors, say channel1. Put the other probe in either pin 2 or 3 of another mic connector... Note we are using different connectors as there often isn't enough clearance for the probes in the same one... With Phantom power turned on and LED +48 lit, how much voltage do you read? If it is say 40 volts or more, then power supply is operating.

If the supply is operating then a POSSIBLE problem is a connector has fallen off where it connects to the supply or the main board.

The power supply provides several voltages such as 5 volts, 12 volts and 15 volts of various polarity.

If the 48 volt supply is found to be operating with the above test, then since the switcher and transformer are shared, it is likely the other voltages are available.

CAREFULLY open the unit and look for a loose cable.

PLEASE NOTE: This is a switching type power supply and part of the supply runs at power line potential. Only work on the supply if you are skilled and have an isolation transformer for your own safety.

Sep 21, 2010 | Behringer XENYX 2442FX Mixer

1 Answer

Emachine total black , this are on fan


LED lights are on? Fans spin? I suggest you have a bad Power Supply.

1) eMachines are noted to have low quality Power Supply's.
Saves eMachines money so they can sell budget computers.

2) A bad Power Supply is one of the leading causes of computer failure. I have, (Had actually), a shop half full of computers with this 'ailment'.

Some caused by the owners never cleaned out the inside of their computer, nor the inside of the Power Supply, with a can of compressed air for computers on a regular basis as needed.

3 to 5 years without cleaning the inside of their computer.
Mice could have made nests inside easily, with the 'Gunk' that was there. A bald eagle could have too. Rant off.

Others, caused by the computer manufacturer used a low quality Power Supply.
Low quality components used inside.
One of the major components that fails, is caused by a particular Electrolytic Capacitor that is used.

http://en.wikipedia.org/wiki/Capacitor_plague

3) Power Supply's used in PC's are a type of SMPS.
(Personal Computer. Statement holds true no matter what type of personal computer it is)

[ SMPS = Switched-Mode Power Supply
PSU = Power Supply Unit
All terms relate to a Power Supply used in a PC ]

A bad Power Supply will have a weak voltage power rail.
There are three major power rails used in the ATX form factor Power Supply, for an eMachines T6420 desktop computer.

A) The 3.3 Volt power rail (DC)
B) The 5 Volt power rail (DC)
C) The 12 Volt power rail (DC)

(Two D cell flashlight batteries produce 3 Volts DC)

A Power Supply with a weak voltage power rail, may have enough power to light LED lights, and spin fans, (or spin a few times, ans stop), but won't have enough power to turn the Processor on.

1) ALL the LED lights combined use less than 1 Watt of power

2) EACH fan uses 2 to 3 Watts

3) A typical Processor can use 51 to 125 Watts.
Depends on what Processor it is.

eMachines T6420?
Uses an AMD Athlon 64 3400+, processor.
(Socket 939)

[The motherboard used is an MSI ms-7207
Also known as K8NGM2-L ]

http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T%20Series&model=T6420

This Processor can use Up To 89 Watts.

http://en.wikipedia.org/wiki/List_of_amd_athlon_64_processors#.22Newcastle.22_.28CG.2C_130_nm.29

No Processor running, No computer.
No computer = No Video Signal

Suggest using a KNOWN to be Good, Compatible power supply, for a test unit, if available.

Should be the ATX form factor.

Approximately 6 inches Long, (15.24cm), 6 inches Wide, (15.24cm), and 3-1/2 inches Tall. (8.89cm)

250 Watts.
Correct amount of power cables, and the correct type.

Sep 20, 2010 | E-Machines T6420 PC Desktop

1 Answer

Just installed new steam shower, it produces steam for about 5 minutes and then blows the fuse


Based from your comments, a new steam shower that blows the fuse in five minutes. You could have installed a new steam shower that is much bigger than what you previously have.
1. For a 5000 watts steam shower at 220 volts
power must have a fuse rating of 40 amps, supply
wires of at least No. 6 AWG Type THW ; and at
110 volts a fuse rating of 80Amps, supply wires
of at least No. 2 AWG type THW.
2. For a 4000 watts at 220 volts, Fuse: 30 amps,
Supply wire: No. 10 AWG type THW. At 110volts
60 amps, Supply wires : No. 4 AWG Type THW
3. For a 3000 watts at 220 volts, Fuse: 20 amps
Supply wire: No. 10 AWG type THW; At 110volts
Fuse: 40 amps, Supply wire: No. 6 AWG THW
4. For a 2000 watts at 220 volts, Fuse: 15 amps
Supply wire: No. 10 AWG THW and at 110 volts
Fuse: 30 amps, Supply wire: No, 8 AWG THW

Nov 27, 2009 | Hammering

1 Answer

Which wire is the 'ON-PS' switch for the Astec Model SA145-3435 power supply?


I found out that the AT supply SA145-3435 does not have a switch wire like an ATX supply. I have a SA145-3435 my self. To get it to work it must have a +5 volt load (BLACK and RED) and a +12 volt load (BLACK and YELLOW). If it does not have both of these loads it will power down after a 2 second delay when you plug it up. I used 2 small 12 volt bulbs. One for the 12 volt line and one for the 5 volt line. The type of blub I used was a #94 I got from the auto parts store.

Oct 01, 2009 | Dell 145W Power Supply SA145-3435...

1 Answer

20-Volt DC Power Supply instead of 12-Volt amp


Here's a few things that come to mind. An auto charging system will operate normally from about 11 Volts to about 14.5 Volts, depending on what is operating (lights, blower,etc), and whether the vehicle is at idle or not. Most car amps will operate from about 10.5 to 16.5 Volts, and outside that range, they will probably shut down.
Another consideration is your 20 volt power supply. You didn't mention if it is a DC power supply, but it needs to be. The other factor is its output, meaning its amperage rating. I'm figuring it will need to put about 5 amps, at the least, for the Sony to put out some watts. I think the line fuses of the Sony are rated @ 25 amps each.
I don't like this type of situation, because I want to say 'try it and see what happens" and I want to say 'don't do it, something may blow".
If you decide to try the 20Volt power supply, maybe if you put smaller rated fuses (say 10 amp) in the Sony amp, they will act as a fail safe. Good luck!

Jul 26, 2009 | Sony Xplod XM-554ZR Car Audio Amplifier

2 Answers

Power supply gigaset 8825


The power supply for the 8825 base is to be 13 volts AC, rated at 850 milliamps or higher. You can go anywhere from 13 up to 15 volts without hurting the unit, and a higher current rating is even better. We actually make them ourselves through bulk purchases of varieties of power supplys. Your next delimma will be the plug size, it is a pretty common size, most universal adapters will have the right size of the outer and inner connections.

Nov 16, 2007 | Siemens Gigaset 8825 Cordless Phone

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