Taking Apart the Computer
What must you do before taking apart a computer?
Turn the device off and unplug the power cable
What is wattage?
The electrical measure in which computer power supplies are rated.
What is compressed air used for?
Getting hard to reach dust particles
What is the purpose of preventative maintenance?
To prolong the life of a given computer through taking care of it
What is ESD? How do you prevent ESD?
ESD is a sudden from of electric current that occurs when stored-up electricity is discharged in an instantaneous surge of voltage. Cumulative effects of ESD weaken or destroy components, so you wear an ESD (or antistatic) wrist strap to prevent it. You can also use an ESD mat.
What is DC?
How does a voltage tester work?
Put the black (negative) and the red (positive) to both the negative and positive sides of a power source like a battery.
What do Power Supplies use as categorization?
The wattage (amps * voltage) of the power supply is used to categorize them
When replacing a Power Supply, what kind of wattage are you looking for?
The same wattage or higher is the desirable amount for replacement
What should you do before moving any parts inside of a computer?
Take a photo to remember where everything is. More photos may be needed later on.
What is AC?
The type of electrical power from a wall outlet. It moves in an alternating pattern and travels father distances.
What are small diagonal cutters used for?
Cutting wires, component leads, and zip ties that are in tight spaces
What is the typical means of fixing an issue with the power supply?
Replacing the power supply is the typical means of fixing issues with your power supply.
What should be done a power outage or a thunderstorm?
Devices such as computers need to be unplugged, generally because of power surges
What should you NOT do with adapters when removing?
Stack them on top of one another.
What is an ohm?
A measurement of electrical resistance.
What is a gold contact cleaner used for?
Cleaning adapter contacts and contacts of laptop batteries and where the battery is inserted.
What is 80 Plus?
80 Plus is an energy efficiency rating, used for the efficiency of converting AC to DC. Comes in many tiers, all having their own efficiency ranges.
What is different in the process of disassembling a regular computer and an All-In-One computer?
There is no difference between the two
Where should you hold an adapter, motherboard, or processor? Why?
Hold it by its sides to prevent dirt, oil, and sweat from messing up hardware.
An electronic measurement of the pressure pushing electrons through a circuit. Voltage is measured in volts.
Denatured alcohol used for?
Cleaning rollers that a rubber like the ones instead of printers
What are Dual/Triple Rail power supplies?
These power supplies have multiple monitored channels (two and three respectively) outputting power to the rest of the device