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Laptop Service Centers in Chennai

Laptop LCD Backlight repair or replacement

Laptop store provide laptop LCD backlight lamp replacement for dim LCD panel with CCFL( Cold Cathode Fluorescent Lamp) backlight.

If you have dim screen problem on your laptop, inverter board failure is not the only reason. Broken or worn out lamps will cause dim display as well. When you turn on the laptop you will get reddish screen in a few seconds then appear to normal display or after a couple of seconds flicker the screen will go black. In this case, you need a new CCFL lamp for your laptop screen.

Replacing lamp is not an easy repair job because the lamp is fragile and you need to disassemble the LCD panel to remove the lamp. If not doing properly, the lamp will be broken or the screen will be damaged permanently.

Our experienced technicians can do lamp replacement very quickly with high success rate. Usually, this repair will be done in an hour.

For LED backlight LCD screen, there is white LED array inside the screen instead of CCFL lamp. Inverter board is no longer necessary for LED backlight screens.

Fixing backlight problem by replacing inverter

Do you have a problem with the backlight on your laptop? If yes, you are not alone, that’s one of the most common laptop problems. In most cases the screen inverter is the culprit. Here are some LCD screen backlight failure symptoms that could be related to a bad inverter board:

           – Laptop boots as usual but after some time the screen blacks out. You still can see an image on the screen but it’s very dim. You might even use a flashlight to see it better. Sometimes the backlight comes back for a while but then goes off again. In some cases you can turn the backlight on if you tap rapidly on the lid close switch.
           – The screen always stay black and the backlight never comes on but you still can make out an image on the LCD. It’s dark, but the image is still there.
        -In some cases you might hear a buzzing noise coming from the area where the inverter board is located, it’s on the bottom part of the display assembly.

How we can help

If you think your backlight is out or you’re not sure, let us check it out.  We will:

·         Disassemble the LCD screen enclosure

·         Diagnose if it’s the backlight, inverter, or LCD itself that is failing

·         Find the most cost effective repair for the problem

·         Replace the defective part and test for function

·         Reassemble the laptop and run a stress test

Getting this problem fixed really comes down to a good diagnosis.  Where someone might think it’s the LCD or the bulb itself that is bad, sometimes it is the LCD inverter that is the problem.  The inverter is a small device that transforms the low voltage of the laptop into a higher voltage – enough to turn on the backlight.  In many cases, both the inverter and the backlight are out at the same time.  It takes knowledge and experience to find out which part needs to be replaced.

If you have any questions about an LCD backlight repair, or computer repair in general, please give us a call to speak with one of our expert technicians!