Screen makes sound when I change the level of the bightness on Qosmio G40

I bought my G40 August 16 and after 16 days, when I change screen brightness level will do some sort of strange noise but if I change the brightness Maxium sound will disappear.

Also if I press the surface of the screen inward (tricky), the sound will become smaller, I send my laptop in the den and the center of den changed new LCD inverter for me but after that the laptop is back, I find that the problem is still there and it was not fixed.

What should I do?

I noticed the same thing on different laptops. I presume that this sound change power supply for FL inverter product. You must be in a quiet room to hear that absolute. I checked on Tecra M and Satellite M70 and the result is the same.

Perhaps you are worried about it, but believe me it's normal.

Tags: Toshiba

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