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Sir deoc
 

Sir deoc

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repotr in tle

repotr in tle

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    Sir deoc Sir deoc Presentation Transcript

    • THE MONITOR
    • A monitor is the computer display and the related components packaged into a single physical unit that is usually (but not always) separate from other parts of the PC. The display is commonly a cathode ray tube (CRT) or liquid crystal display (LCD), but it can also be a light-emitting diode, gas plasma, or other type of projector.
    • MONITOR DANGERS
    • Never underestimate the dangers associated with monitors:
      Leave monitor repairs to the experts.
      Keep liquids away. A spill into a monitor can provide the electricity a route to you and deliver a lethal electric shock
    • Never open the case or attempt any repair to a defective monitor
      If you suspect any problems, unplug the monitor immediately
    • MONITOR CARE
      • Keeping the screen clean
      • Keeping the system dust-free
      • Keeping the power “clean”
    • SCREEN CLEANING
    • Dust and dirt on the screen can cause eye strain as well as diminishing colors and screen brightness.
    • NEVER DO ANY OF THE FOLLOWING…
      • Never place liquids near a monitor.
      • Never spray liquids or mists near a monitor, as this can give the electricity a path to reach you!
      • Never use harsh chemicals to clean the monitor. These can damage the antiglare coatings on the surface of the screen.
    • Although it’s not going to result in a lethal electric shock or anything abrasive to clean the screen. Scratches on the glass can distort the picture, which will seriously affect your view.
      Never use anything greasy to clean the monitor.
    • ALTERNATIVE KIT
      • A duster
      • Disposable static dust wipes
    • DUST-FREE MONITORS
      • Normally, dust isn’t much of a problem, but when it builds up into a “carpet” it can prevent the monitor from having enough air to cool it.
      • The best tool is vacuum cleaner.(simply running the nozzle over all the air, you can keep the dust to a minimum and ensure adequate air flow)
    • BE CAREFUL IN CLEANING COMPUTER
      • Always unplug it before cleaning it.
      • Be careful when moving it. CRT monitors are very front-heavy and can topple forward if tipped too far.
    • KEEPING THE POWER CLEAN
      Poor power is bad for your monitor-worse than it is for the PC itself. The extremes of highs and lows play havoc with the delicately balanced electronics that it contains . Power dips and brownouts are just as bad as spikes. Both take the voltage being supplied to the system outside of the acceptable range, and prolonged consumption of “bad” power will take its toll on a system.
    • The easiest and best way to ensure that your system is kept safe from power fluctuations is to invest in a UPS(uninterrupted power supply) system. This is basically a device that allows your computer to keep running for a short period of time after the main power supply is lost. All good UPS system also provide protection from power surges.
    • Uninterrupted Power Supply
    • GRAPHIC ADAPTERS
      • Also called a video adapter, display adapter, video card, video board.
      • It is an integrated circuit board
      • Fitted inside a computer
      • It handles digital-to-analog conversation, data storage in video RAM, and has a controller so that data can be processed and passed on to the computer’s display.
    • Integrated Circuit Board
      • All graphics adapters for displays adhere to a common-denominator(VIDEO GRAPHICS ARRAY)
      • Describes how the data is passed between the computer and the monitor
      • The greater the resolution, the finer the images on the screen appear
      • Most popular resolutions are 800x600, 1024x768, 1600x1200 pixels
      • The memory available rages wildly from 1MB (not common nowadays), to 32-64 MB (common nowadays), through 128MB and beyond.
    • ONBOARD GRAPHICS ADAPTERS
      • Sometimes the graphics adapter isn’t a separate card inside the system but onto the motherboard, these are known as on-board graphics adapters.
    • PROBLEMS WITH GRAPHICS ADAPTERS
      If your computer crashes often or crashes when running a particular game or application, this is a very good chance that the cause is the problem with the graphics adapter.
      • Bad driver
      • Incompatible graphics adapter
      • Loose fitting graphics adapter
      • Broken/ damaged/ loose connector
      • Defective graphics adapter
      • Overheating
    • BAD DRIVER
      • If you are having instability problems with your system.
      • If not booting up, the first thing you should check for is updated drivers for the graphic adapter and the sound card
    • Why Graphic Adapter Drivers Cause Problems?
      • Basically, a graphics adapter has grown into more than just a component (like the CPU or RAM).
      • But unlike the CPU or motherboard, it is a component that relies heavily on drivers loaded into the operating system.
      • Perhaps you installed a game that told you that you need to update your software driver or the operating system you want to upgrade to doesn’t support your existing hardware or drivers.
    • GETTING NEW DRIVERS
    • The first and best source of drivers is the Internet. Visit the manufacturer’s website and see if they have a “drivers” or downloads section that you can browse.
      If the internet isn’t available to you, you will have to resort to phone support and having the driver sent to you in the mail.
    • DON’T UPGRADE UNLESS YOU NEED TO
    • There are three clear reasons why you should upgrade a graphics adapter driver:
    • You are currently having problems.
      The new driver is compatible with an operating system or other software you plan on installing.
      You are installing a new driver because the old driver had known defects that cause instabilities or performance issues.
    • Note:
      • Be very careful about updating for any other reason. For now, the message is “be cautious,”.
      • If in any doubt- don’t.
    • INCOMPATIBLE GRAPHICS ADAPTER
      • Choice is usually a good thing.
      • Maybe you bought a game or some other application that lists on the box that it needs a graphics adapter with a particular capability or functionality (games are most likely to bring graphics adapter issues to a head). Or perhaps the installation halted because the wrong kind of card was detected.
    • Here are some issues you should consider:
      • How will a new card affect your current system?
      • What current software might you have that could be incompatible with the new card you get? Check the specification of your games carefully.
    • * There are no shortcuts to research.
      * The best way to make sure that you understand what graphics adapter you need is to read the specifications- of both the card and the game that you run.
    •   Two standards you might see are DirectX and OpenGL (Open Graphics Library) both provide an application auto programming interface (API) that game makers (among others – good graphics are no longer something restricted to games) can use to build on. DirectX is a Microsoft standard, while Open GL was initiated by Silicon Graphics but is now an industry wide review board that includes 3Dlabs, Intel, IMB, Nvidia, and Sun Microsystems.
    • Loose Fitting Graphics Adapter
    • The continual heating and cooling that happens inside a PC during each switch-on and switch-off cycle can cause joint creep to occur. This expansion causes joints to become looser and cards to distort slightly. Graphics adapters are more prone to this kind of problem than other kinds of expansion cards because they themselves generate a lot of heat.
    • Each time you open the case on your computer, check the connections and look for any signs of distortion. If you see any, undo any of the connections and look for any of the connecting screws and remove the card before reseating it. Also, some graphics adapters have a separate power supply fed from a drive conneting socket. If this is a present, check ot for signs of looseness.
    • Broken/
      Damaged/
      Loose
      Monitor Connector
    • Undo the connector and visually check both the plug and the socket. Redo the connection, tightening up the screws hand tight and try it again.
      If you break a pin, there is a little chance that you can repair it. If you bend a pin, you’ll be able to fix it.
    • Take a small pair of tweezers.
      Gently grasp the whole of the bent pin in the tip of the tweezers.
      Carefully squeeze the pin straight, gently working the metal.
      Once you get the pin to the approximate position that it should be in, try reattaching the connector to it, slowly and carefully easing it onto the pins
    • 5. If the pin still seems out of alignment, go back to the tweezers and work on the pin again, bending it no more than is needed.
      6. Never work a bent pin back and forth as this will undoubtedly break it off.
    • Defective Graphics Adapter
    • Nothing lasts forever, and consider that a PC is made up of dozens of interlinked components consisting of thousands of individual pars, each of which plays a key role. If even one fails, the whole computer is dead. The fastest easiest way to test a component is to try it on a known good system.
    • Remove the old card
      Insert the new one
      See if the system works.
    • Overheating
    • This may result to intermittent system problems (lockups, crashes, and reboots) or could even damage the components permanently.
      The CPU and hard drives generate the most heat boosts in the performance of graphics adapters have added them to the category of “heat generators” make use of heat sinks and fans to cool components, but these rely on a constant and ample air supply. This air also needs to be cooler than that of the component: otherwise no cooling will happen no matter how powerful the fans! Make sure you keep the air intakes on the case clear of dirt and dust and unobscured by books and papers.
    • Dirt and dust need to be cleaned out regularly. You will need to clean it more often in a room where there are carpets and pets, compares to a more sterile office environment.
      Clean fans carefully with compressed air and a vacuum cleaner.
      While you are working on the fans, remember that they are delicate. You should never press or turn fans by hand, as this will damage them. Don’t worry if the air blast causes them to rotate: that’s quite safe and won’t cause damage.
    • NOTES:
    • The monitor is a big part if the whole PC package and unfortunately, because of the high voltages inside it, is a part that should be left to the experts in the event of a problem with it.
      You can attach another monitor to the system and if that works it should show you that the faulty item is indeed the monitor and that it should be repaired or replaced.
      The graphics adapter is a key component of your system and carries out a vital job.
    • Manufacturers correct and compensate for many of the problems that users come across.
      Internet made it easy to get  new, updated drivers.
      It also need looking after, in the form of making sure that the drivers are the best possible and that it is clean and getting adequate cooling.
      Make checking the graphics adapter a part of your regular maintenance routine.
    • Monitors and Graphics Adapters Troubleshooting Checklist
    • Never open the case on a monitor; always seek professional help if you have a problem with a monitor.
      If the adapter is newly installed, have you installed all the necessary drivers and software? Reinstall drivers and softwares.
      Check all the cables and connections between PC and monitor.
      Carefully check cables and connectors for signs of damage.
    • Check that you have all the tools you need before opening the case.
      Carry out safety checks (power off, etc.)
      Protect against ESD
      Open case
      Check graphics adapter seating. Remove and reseat are required.
      Check the graphics adapter cooling system (fan and heat sink)
    • Start up the system; install any software/drivers
      Thoroughly test the system
      If possible, try the graphics adapter on a different PC.
      If all else fails, contact tech support for the device.