| Author |
Message |
Tim Myers
| | Posted on Sunday, April 10, 2005 - 7:18 pm: | |
Thank you for your time.
I have a Presario 5000 with a 250W power supply. The CPU is a Celeron 800. Recently a new CD burner was installed into the computer.
I know that power is getting to the power supply and I have replaced the fuse with one that I know is good. Visual inspection of the interior of the power supply does not indicate any burned or shorting indications. Also visual inspection of mother board does not indicate any obvious problems.
I am recieving 120V to the power supply, however there is no activity at all, no fan, no lights, nothing.
My question is how would I determine if the power supply is defective or if another problem is not allowing the computer to turn on?
I have a BS in Chemical Enineering and have a decent multimeter for testing, therefor if there is anyway I can induce the power supply to work outside of the computer, I know I can evaluate the voltage and amperages from the power supply.
Again Thank you for your time!
Tim
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Moderator (Es)
Username: Es
Registered: 6-2003
| | Posted on Sunday, April 10, 2005 - 9:33 pm: | |
Some compaq 5000 series systems use a standard ATX power configuration, to determine if you have such a power supply, disconnect the 20 pin molex connector from the mainboard. If you have a 24 pin power connector its proprietary and you are done. Next look at the connector with the wires facing away from you and the lock on top. The wire colors from left to right should be PIN 11 either orange or yellow in some cases, PIN 12 blue, PIN 13 blk, PIN 14 green, PIN 15 16 17 blk, PIN 18 white or yellow than PIN 19 20 red.
Next you will do at your own risk:::Jumper pin 14 and 15 with a wire, (I use a wire with an alligator clip on each end and 2 semi straght paper clips) this turns on the power supply by sending the power good signal low.
If the power supply doesn't turn on at this point than the Power supply is dead.
If it does power on than the common voltages are from pin 11 to pin 20 +3.3V -12V Common PSon Common Common Common -5V +5V
PINS 1 through 10 are
+3.3V +3.3V Common +5V Common +5V Common PWROK +5VSB (if used) +12V
The paper clip/alligator clip trick should only be done momentarily as prolonged no load operation of a power supply may damage it.
In other words set your meter up for each check prior to a power up so you get a reading immediatly power down and setup for the next check power up get the reading and so on and so on. Sorry to make this sound like trouble shooting 101 but it has to be done in this way.
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Compaq Presario is Killing Me! Read next thread help me out plz
| | Posted on Tuesday, November 22, 2005 - 3:05 pm: | |
Hey tim, you are running a pretty low power supply. I f it's stiill not running, you might want to try a different w psu. I would suggest somwhere around 450w just to leave room for future upgrades! |
Nkemnji Camillus
| | Posted on Thursday, February 2, 2006 - 3:35 am: | |
My Compaq Presario computer 5000 series MONITOR just flashes GOING TO SLLEP and does not come on.May i know what to do next? |
Nkemnji Camillus
| | Posted on Thursday, February 2, 2006 - 3:55 am: | |
My Compaq Presario computer 5000 series does not turn on.It reads all the times GOING TO SLEEP.What do i do for it to turn on? |
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