Basic Computer Monitor Problem Troubleshooting
Basic computer monitor problem
troubleshooting means just that, the price of computer monitors has come right
down over the past year so unless you have a laptop or a new expensive screen,
generally it’s cheaper to replace it than get it repaired once we have
ascertained that it’s a fault with the monitor of course.
Back Light Failure
One of the most common faults
with the later generation of screens, this includes laptops as well is when the
back light fails, if this happens you can still see the screen image but it’s
very dark.
If the backlight has gone on a
laptop then it’s a question of how new the laptop is, how much it would cost to
replace, against the cost of the backlight repair, which may mean replacing the
whole screen. (If you are familiar with dismantling laptops then many laptop
screens can be purchased from sites such as eBay for a fraction of the new
price.
If the monitor appears to be
totally dead more of often it’s usually the power cable to the plug which has
blown.
If the monitor is on but
has not image, and you’ve checked to make sure the backlight has not failed (as
above) then it’s worth checking the following.
Is the video cable securely
plugged in between the monitor and the computer.
Does the video cable have any
signs of damage? Breaks in video cables can happen, check against a working
cable.
What’s the length of the
computer cable? Depending on the power of the video signal, the maximum cable
length could be less than 5 metres, especially if you are attempting to display
your computers image on a TV
Switch off the monitor and
computer, leave for 30 seconds and switch both on together, on some older
monitors if the monitor is on before the computer then it may not detect the
video signal from the computer.
Does the monitor display
text (NO SIGNAL) this simply means it cannot detect a signal from the computer,
reasons for this include?
Power off the monitor and
computer, leave for 30 seconds and power back on.
Has the computer or the monitor
changed? Is so it may mean the computer does not like the resolution or refresh
rate that the computer is trying to get the monitor to run at, from Windows at
start-up hit the F8 key this will allow you to enter the computer is VGA or safe
mode, once you’ve logged in you can change the video setting from Control Panel
> Display to one that’s compatible with the monitor.
What type of video input are
you using on the monitor? Many monitors have more than one video input, if so
your monitor will have a select button on the front to cycle between monitors.
Make sure you are using the
latest version of video drivers available for your video card / monitor
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