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Dim screen ruining my Hannspree

\015 I bought a Hannspree HF257 (25 inch) about 6 months ago and recently I've noticed that the screen is a lot dimmer than it used to be except for the top center area of the screen is still fine. I've messed around with the brightness settings on the monitor's menu as well as on my graphics card control center,. Neither works.\015

Answers :

Your LCD screen backlite bulbs are bad or the inverter card the drives them is going bad
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