Buzzing sound from LCD + backlight failure
A buzzing sound is heard from the LCD of my laptop, which is a Dell Inspiron 1545. Its intensity changes when I increase the brightness. In addition to that, backlight fails when I increase the brightness (there is picture but no light) and I can use it only if the brightness is at the lowest. As far as I know, the latter indicates CCFL inverter failure. I opened it to investigate the noise and found out that the noise is coming from the LCD itself not the inverter. The noise is negligible and my main problem is the backlight.
Which one do you think is causing the backlight failure?
Does changing the inverter solve the brightness problem?
Thank you for your time and help.