Power Supply Overload?

What happens when the power supply unit is overloaded? What are the symptoms?

On boot up my computer sometime just shuts down and I can't restart it until
I remove the plug and the LED light goes out (about 5 seconds) and re-insert
the plug.

Run this program, enter the hardware that is installed in the problem
computer.. it will tell you if the ps is up to the job..

Most likely, the thermal cut-out is activating.. time to go buy a new one,
perhaps..

http://www.adecy.com/psu/

--
Mike Hall
MVP - Windows Shell/user



"Calendar Control" wrote in
message ...
What happens when the power supply unit is overloaded? What are the
symptoms?

On boot up my computer sometime just shuts down and I can't restart it
until
I remove the plug and the LED light goes out (about 5 seconds) and
re-insert
the plug.

Usually the PC would shutdown/reboot (crash) because the hardware would
demand too much power.


"Calendar Control" wrote in
message ...
What happens when the power supply unit is overloaded? What are the
symptoms?

On boot up my computer sometime just shuts down and I can't restart it
until
I remove the plug and the LED light goes out (about 5 seconds) and
re-insert
the plug.

Most people don't even know that a good PSU "has" a thermal overload
protection device. They think it has only a fuse - or nothing. (-:

--
Regards,

Richard Urban

aka Crusty (-: Old B@stard :-)

If you knew as much as you thought you know,
You would realize that you don't know what you thought you knew!


"Mike Hall" wrote in message
...
Run this program, enter the hardware that is installed in the problem
computer.. it will tell you if the ps is up to the job..

Most likely, the thermal cut-out is activating.. time to go buy a new one,
perhaps..

http://www.adecy.com/psu/

--
Mike Hall
MVP - Windows Shell/user



"Calendar Control" wrote in
message ...
What happens when the power supply unit is overloaded? What are the
symptoms?

On boot up my computer sometime just shuts down and I can't restart it
until
I remove the plug and the LED light goes out (about 5 seconds) and
re-insert
the plug.

As was standard even 30 years ago, the power supply would go
into current foldback limiting. This is even defined by
Intel's ATX power supply specifications.

As power supply approaches its limits, voltage tends to
drop. The multimeter is an excellent tool to identify this
problem. A test especially important when Asian manufacturers
have discovered how technically naive so many N American
computer assembler really are. IOW many power supplies dumped
into N America are so deficient as to even self destruct when
under too much load:
http://www6.tomshardware.com/howto/0...021/index.html

However first learn all the components of a power supply
'system'. It is not just the PSU. Also existing is the power
supply controller, and power switch. Suggest you get that
multimeter immediately so that you can both learn how a power
supply system works AND find the reason for your problem.
Further information was posted in "Computer doesnt start at
all" in alt.comp.hardware on 10 Jan 2004 at
http://tinyurl.com/2t69q and
"I think my power supply is dead" in alt.comp.hardware on 5
Feb 2004 at
http://www.tinyurl.com/2musa .

One thing to learn immediately. Why are many brand name
computers supplies with same power supplies? Often the brand
name with machine with a 250 watt supply may have the same
power output as a hyped (discounted) 350 watt supply from some
clone computer assembler. Again, notice the problem that
Tom's Hardware had in getting real measurements.

Get the meter. Learn the concepts. Determine which of
three components in that power supply system may be causing
your problem.

Calendar Control wrote:
What happens when the power supply unit is overloaded? What are
the symptoms?

On boot up my computer sometime just shuts down and I can't restart
it until I remove the plug and the LED light goes out (about 5
seconds) and re-insert the plug.