Compaq Presario sr1703wm will not power up

[southerly]

Hello,
The machine will not power up. Is the power supply
controlled from the motherboard or is this clearly a
power supply problem ? I want to be certain I am
spending my money in the right place.

 

[electronicsfreak]

Motherboard is what tells the power supply to turn on however just because its not turning on you cant know for sure which it is from just that. Ive seen switches on machines go bad. My advice open it up, disconnect the wires that are running to the power switch, take a flathead screw driver and touch those 2 terminals that are labled power on the board. If it turns on then the switch was bad.

If it doesnt, get you a power supply tester and test the power supply. If it shows good then my guess is your motherboard is bad.

Also make sure on the back of the power supply is it set to the right voltage. 110 for us, 220 for uk and other places.

Also make sure surge protector your using is good. Check the power cable itself.

There is a point in wisdom and knowledge that when you reach it, you exceed what is considered possible - Jason Schoon

 

[southerly]

Great, thanks for the quick response, I notice there are two pairs of terminals labeled PWR, which pair do I care about?

 

[electronicsfreak]

should be only one pair of terminals marked power, the ones should be pw+ and pw- . There is also a reset switch usually above it.

What are all the labels on them?

There is a point in wisdom and knowledge that when you reach it, you exceed what is considered possible - Jason Schoon

 

[southerly]

Ok, I have terminals laid as follows (hope formatting maintains):

. . . .
. . . . .
PWR LED PWR BTN
--------- -------
/ \ / \
NO LED RESET

 

[electronicsfreak]

ah the other is the hard drive leds, thats not the power for the computer. The one you want is the pwr above the reset. Those are the 2 that turns it on.

There is a point in wisdom and knowledge that when you reach it, you exceed what is considered possible - Jason Schoon

 

[southerly]

Thanks again for the prompt response.
I crossed the top two posts that match
wires going to the switch. No dice. It
would appear then the power supply is
shot, correct ?

 

[electronicsfreak]

Either that or motherboard, get a power supply tester to make sure. They usually run about 20 dollars and are something good to have around.

There is a point in wisdom and knowledge that when you reach it, you exceed what is considered possible - Jason Schoon

 

[southerly]

Ok thanks,
Will do.

 

[Sleepsalot]

First thing has any new hard ware been added to the machine? If so have you tried to clear the cmos. I don't think this the problem but worth a shot.

Life is a big Roleplaying adventure.

Wayne

 

[HalComps]

if u no some1 with a power supply hanging around u could test it that way, but tbh sounds def like you power has gone