Is my power supply going bad?


J

JD

I have a 15 month old Win Xp computer I bought from Microcenter about
15 months ago. For the last week or so, I have been hearing a small
whining sound when I started the computer although I wasn't quite sure
that it was coming from the computer. This morning, I heard a
slightly different sound, which was like a little clicking and the
computer would power up for a couple of seconds and then shut off. I
did that a couple of times, and it would not power up. Then I waited
about 5 minutes, and it powered up. Is the problem my power supply or
something else? And how do I fix what is causing the problem.

Thanks for any help you can give.
 
Ad

Advertisements

E

Ed Medlin

JD said:
I have a 15 month old Win Xp computer I bought from Microcenter about
15 months ago. For the last week or so, I have been hearing a small
whining sound when I started the computer although I wasn't quite sure
that it was coming from the computer. This morning, I heard a
slightly different sound, which was like a little clicking and the
computer would power up for a couple of seconds and then shut off. I
did that a couple of times, and it would not power up. Then I waited
about 5 minutes, and it powered up. Is the problem my power supply or
something else? And how do I fix what is causing the problem.

Thanks for any help you can give.
It sounds more like a hard drive going bad than the PSU.

Ed
 
J

JD

It sounds more like a hard drive going bad than the PSU.

Ed

Does it affect your analysis that once my computer is up and running
that I don't hear any other noises? Also, I have a more than normal
need for my computer this week. Since I don't hear noises when the
computer is running, does it make sense to run the computer
continuously?

JD
 
P

Paul

JD said:
I have a 15 month old Win Xp computer I bought from Microcenter about
15 months ago. For the last week or so, I have been hearing a small
whining sound when I started the computer although I wasn't quite sure
that it was coming from the computer. This morning, I heard a
slightly different sound, which was like a little clicking and the
computer would power up for a couple of seconds and then shut off. I
did that a couple of times, and it would not power up. Then I waited
about 5 minutes, and it powered up. Is the problem my power supply or
something else? And how do I fix what is causing the problem.

Thanks for any help you can give.

Either the power supply has hit old age, or something is overloading it.

If you had a fully equipped lab, you might be able to figure out what
was going on. For a lot of people, swapping components is how you fix it.
And the first thing to try is a different power supply.

If the computer case is a smaller one, sometimes the fun part is shopping
for a replacement supply. A full sized ATX would be easy to find. Some
of the microATX ones, are less easy to find. Or at least, finding a
good one is less easy. There are a lot of cheesy microATX supplies, and
it is hard to trust any of the brands.

To get some idea on brands, read the reviews here.

http://www.newegg.com/Product/Produ...20058+1131310094&Configurator=&Subcategory=58

If you see a lot of reports of DOA or early death, that would be a good
reason to stay away from that model.

http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16817104016

Paul
 
W

w_tom

Does it affect your analysis that once my computer is up and running
that I don't hear any other noises? Also, I have a more than normal
need for my computer this week. Since I don't hear noises when the
computer is running, does it make sense to run the computer
continuously?

Many power supply problems can be easily identified before failure
happens and without massive lab equipment. But supply must be under
maximum load when numbers are obtained. Without numbers, no one can
provide a useful answer.

First you must multitask the computer so that all peripherals are
being used simultaneously. For example, a movie executes complex
graphics in the video controller, as disk drive is read, as a floppy
disk is read, as internet access is ongoing, as CD-Rom is playing (or
burning), etc. Now you take voltage readings on any one of four
color wires: orange, purple, red, and yellow. Those numbers must
exceed 3.23, 4.87, and 11.7. And posting those numbers here may also
provide further insight.

Again, with information posted, only wild speculation can be offered
as an answer. Without those numbers, nobody can say if your supply is
deficient. And the neat thing about numbers - we can even see
existing failures that do not yet crash the computer. That is also
why the better educated techs also take these same numbers after
replacing a power supply. Just because the computer boots does not
mean power supply is working properly.

Get the 3.5 digit multimeter because the tool is "so complex" as to
even be sold to K-mart shoppers. A tool so complex that some think we
would need a complex analysis laboratory. Also sold in Wal-mart,
Sears, Lowes, Radio Shack, Tru-Value, etc. A necessary tool just like
a screwdriver; only $20, and even less in Wal-mart or when on sale.

Get the meter. Post those numbers. Get an answer based in known
facts.

You posted this same question elsewhere. Anna was offering so good
advise including data backup. If dust created a problem, then you
have a hardware problem. Hardware is designed to work even when
dusty. Dust typically is not the reason for noise. But defective
hardware can be noisy in dust. IOW don't cure symptoms. Get facts
before fixing things: ie diagnostics, trace sound with your ear, etc.

If computer did not even power up once, then disk has nothing to do
with it. Of course, you first posts were not clear. What did or did
not happen when computer did not boot? Replies will only be as useful
as information you first provide - such as those numbers from a
multimeter.
 
Ad

Advertisements

Ad

Advertisements


Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads


Top