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Preliminary 8-2002 RSHD Smartcaster Installation Manual

Replacing A Power Supply

The power supply is one of the most important, but also most ignored pieces of a

computer. You plug it into the outlet and turn it on, what's the big deal, right? Wrong!

The power supply has to work hard to provide a constant and stable level of electricity to

the devices in your computer without fluctuations. It has to be strong enough to feed all

the devices in your machine.

What if it fails?

A power supply doesn't last forever. Sooner or later they'll fail. They can last all the way

from a few months to many years, it all depends on the quality, how hard it has to work,

and what conditions it is exposed to (temperature changes, bad electricity, dirt, etc.).

The component inside a power supply that is prone to fail first is the fan. It usually starts

with a grinding or high-pitched noise that initially disappears a few minutes after you turn

the PC on, but soon gets worse. Once the fan is dead, the hot air is not being properly

exhausted from the power supply that causes it to overheat and accelerates its demise. In

addition, often the power supply fan also exhausts hot air from the inside of the

computer, and if the fan fails, you lose an important part of cooling.

Warning: Don't try to replace the power supply fan yourself unless you know

what you're doing! It requires some soldering and should only be done by

somebody who is familiar and comfortable with such a procedure. I rather

recommend replacing the whole unit with a better quality one.

When the actual power supply fails, it can exhibit a number of symptoms. You could

experience crashes, data corruption, or hardware failure. Another thing that could happen

is that when you turn on your PC, the lights and fans come on, but it doesn't boot,

because the BIOS cannot verify a sufficient and consistent power flow is established

before it continues the Power On Self Test (POST) and the boot process. Or the PC does

not boot at all if the power supply is completely dead and nothing happens at all when

you push the power button.

Either way, it's time to replace the bad power supply. Before you go shopping for a new

one, find out what type of power supply is in your machine. There are two main styles,

AT and ATX. The older AT style is usually found in first generation Pentium and older

AMD machines. Most all Smartcasters built into the industrial rack mount cases are AT

style power supplies. If your office machine is less than 3 years old, it most likely has an

ATX style power supply. The main difference between the two is in how they connect to

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Broadcast Tools DSC-20 Installationshandbuch Seite 46