power supply?

[beebo]

hey guys, i was browsing the internet one day and my computer jus
shut off and wont turn back on. ive tested it on multiple outlets an
with different power cords. when plugged into the wall i can see th
little green LED lit up on the mother board. when i hit the powe
button, the LEDs on the front of the case will flash once then die
ive checked all of the connections and im wondering if its the powe
supply or something else before i go out and buy a new one. thank
for any input. BTW im on an old laptop

 

[Dave]

hey guys, i was browsing the internet one day and my computer just
shut off and wont turn back on. ive tested it on multiple outlets and
with different power cords. when plugged into the wall i can see the
little green LED lit up on the mother board. when i hit the power
button, the LEDs on the front of the case will flash once then die.
ive checked all of the connections and im wondering if its the power
supply or something else before i go out and buy a new one. thanks
for any input. BTW im on an old laptop.

Well, there's no way to figure this one out without swapping components, I'm
afraid. Your symptoms sure sound like a bad power supply . . . or a
severely bad mainboard. But sudden death like that is more likely a power
supply issue. -Dave

 

[beebo]

got a new power supply but problem still persist

 

[Paul]

got a new power supply but problem still persists

Have you looked at the motherboard, for leaking capacitors ?
Capacitors are the tall aluminum cylinders, with a plastic
sleeve on the outside. The top of the cylinder should be
flat, and has a pattern stamped in it. The top is a pressure
relief, in case the internal pressure in the capacitor becomes
too high. You might find more than six of these, near the
processor socket.

If the top of the capacitor is bulging and is no longer flat,
or if you see a brownish stain, where some brown liquid
dried around the base of the capacitor, then the capacitor is
bad. Capacitors can be replaced, or the motherboard can be
replaced. If the capacitors are allowed to degrade far
enough, they can damage other components on the motherboard,
and those will be harder to find replacements for. Capacitors
are relatively easy to select, but inductors and MOSFETs
require someone with knowledge of power supply design, to
pick good substitutes.

If the capacitors are bad, and the motherboard still has a
warranty, then use the warranty and get the motherboard
repaired.

This is just one of many possibilities.

Paul

 

[-nos1eep]

It is further alleged that on or about Sat, 18 Mar 2006 01:33:51 GMT,
in alt.comp.hardware.pc-homebuilt, the queezy keyboard of
(e-mail address removed) (beebo) spewed the following:

|got a new power supply but problem still persists

Take it to a professional someone and have them test it.