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I installed a new power supply when i push the power button yhe monitor comes on for 5 seconds and then goes black

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So could you please tell me what exactly was wrong with your previous power supply. I know it wud sound bad to you but sometimes faulty power supply causes permanent damage in your other hardware. So may be try to remove one hardware at a time and try to restart your PC without that hardware. If you would have same problem then install that hardware and try it with another one.
When you start your computer just start with basic hardware i mean only with keyboard, mouse , monitor and power supply.
But before anything please make sure your new power supply is giving right voltage and you have applied all connection. Some motheboard have special 4pin port for your CPU fan and for those motheboard you need a power supply with four pin wire only for ur CPU fan. Make sure your CPU fan is running. If not then you need that power supply
see these images
http://images.google.com/imgres?imgurl=http://www.playtool.com/pages/psuconnectors/12v4pinadapter.jpg&imgrefurl=http://www.playtool.com/pages/psuconnectors/connectors.html&h=365&w=355&sz=22&hl=en&start=1&um=1&usg=__smTu4Xc7VDpTb8XZI8Sm_Yv8AfA=&tbnid=p8hrXAAr7Uog9M:&tbnh=121&tbnw=118&prev=/images%3Fq%3Dpower%2Bsupply%2Bwith%2Bfour%2Bpins%26um%3D1%26hl%3Den%26rlz%3D1T4GFRC_en___CA204%26sa%3DN

If you are not sure please call any computer technician or take your power supply to him to check output voltage.

Good luck and hope it helps !!

Posted on Oct 01, 2008

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My pc was taken apart so I could move. When I hooked it back up the monitor comes on for a couple seconds and says that my pc is in analog power saving mode. The power light on the tower just blinks c


It might be in a corrupted hybernation mode.
Try turning the computer off by pushing the power button for 10 seconds and then do not choose resume but the other option.

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Monitor flickers black and comes back on...I am stumped...


userunnown,

Probably shouldn't have posted about the voltage thing. Power is checked with any wall outlet, and a multimeter set to AC Voltage. Or using a voltage tester. Pardon me if I overstep my bounds, but I do Not recommend you try this procedure. No matter WHAT, I wish you to be safe.

{Electrician? Minimum charge of 1 hour (Usually), even if it takes 4 minutes. May be additional charges also. In my area? Average is around $42 an hour. If we were 'talking' about the Low DC Voltages your Power Supply puts out, I would have no problem, (And have), advising you }

Now 'looking' at the total picture in front of us, it would seem the common 'denominator' is the SSD harddrive. Wouldn't you agree?

How to know? Try using a SATA harddrive.
(Feel foolish posting that to YOU, sheesh! )

Regards,
joecoolvette

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1 Answer

I have a dell computer. when i turn on the tower and monitor i get just a black screen on the monitor. i have pushed a few buttons on the bottom of the screen and it just says power save mode please use...


No, it's the Power Supply.

Power Supply has a weak voltage power rail.

The monitor goes to Power Saver mode because it is not receiving a video signal. (No Signal)
This is because the computer is not working.


Dell Support > Dimension 4700 desktop computer > Service Manual,

http://support.dell.com/support/edocs/systems/dim4700/sm/index.htm

Click on the heading - Advanced Troubleshooting

Is the Power On LED light blinking Amber? (Yellow)

Post back in a Comment.

Regards,
joecoolvette

{You can also test the power coming out of the Power Supply.

The Power Supply in your computer is an SMPS.
Switched-Mode Power Supply,

http://en.wikipedia.org/wiki/Switched-mode_power_supply

It converts the AC electricity from your home, or business, into DC electricity.
There are three main voltages produced;

A) 3.3 Volts (3 point 3)
B) 5 Volts
C) 12 Volts
All are DC voltage

Two D cell flashlight batteries produce 3 Volts DC.
(In case you are worried about being shocked.
The 'bad' electricity is contained inside the Power Supply's case)

If you do not have a multimeter, an economical unit can be purchased for around $8 to $12. A LOT of stores carry them. An auto parts store is one example.

Orange wires are 3.3 Volts
Red wires are 5 Volts
Yellow wires are 12 Volts.

ALL 3.3 Volt wires end at the same 3.3 Volt power rail in the Power Supply.
Same with 5 Volt wires, and 12 Volt wires.

You can test ANY Orange wire, or any Red wire, or any Yellow wire.

ANY Black wire you see is a Ground wire.

The red probe lead of the multimeter is the Positive lead. The black probe lead is the Negative lead.

The Positive probe lead is touched to a positive wire.
Orange, Red, or Yellow.

The Negative probe lead is touched to ANY black wire. ALL black wires are a Ground wire.

The function knob on the multimeter is set to DC voltage. (Dotted line over a solid line, with a dotted line under the solid line. The curved S line over a solid line is for AC voltage. This = No)

If there are different scale settings, set the function knob to 0-50 Volts. (DC)

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How's the status light of your computer monitor? is it blinking amber? and the status light of your computer tower's power button? blinking amber as well or solid green or no light at all?

1. Disconnect all the connection at the back of your computer tower
2. Press the power button of the computer tower for 15 seconds
3. Reconnect the power button and the monitor cable at the back of your computer tower and turn on the computer (if it turned on that means that one of the device plugged at the back of your computer tower is faulty)
4. If still the same problem, open up your computer tower.
5. Reseat the video card, Reseat Hard drive, Reseat Memory, Reseat CPU, Reseat power cord coming from the CPU to your computer (doing all things one-by-one to pin-point the root cause of the issue)

If none of the troubleshooting steps fixed the problem, possible that the power supply is faulty and if the power supply is faulty sometimes it goes with the motherboard.

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If this has worked you have proven that it's not the power supply (it turned on). If you purchased a non dell power supply, you might try this with the original one installed.

Go buy a new battery (CR2032 3 volt). Unplug computer, open it, hold power button until green led on the inside on the motherboard turns off, pop in new battery, plug in (you should notice the power button blinking amber again), hold power button until it stops blinking (about 20 sec....again must reset BIOS), wait 10 sec., push power button. the computer should turn on. Wait for it until activity seems stabe (1 min. or so). Push powerbutton to shut off.

Now, close case, plug in all usb/monitor/internet/etc. Power up computer. You'll get an internal floppy drive error. Push F2 (maybe F1) to get into the BIOS settings and go to "drives" and turn off the internal floppy. Save and exit. The computer should boot properly now.

This seems to be a big problem with the e510, my theory is that this one small battery is the root of most of these failures (as these computers usually fail after 1-2 years), not the power supply or the motherboard (heck, when you replace the motherboard it comes with a new one of these batteries...a several hundred dollar piece of hardware, with a $5 battery that will actually fix it).

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If this has worked you have proven that it's not the power supply (it turned on).

Go buy a new battery (CR2032 3 volt). Unplug computer, open it, hold power button until green led on the inside on the motherboard turns off, pop in new battery, plug in (you should notice the power button blinking amber again), hold power button until it stops blinking (about 20 sec....again must reset BIOS or something), wait 10 sec., push power button. the computer should turn on. Wait for it until activity seems stabe (1 min. or so). Push powerbutton to shut off.

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