Hi
I'm trying to fix a LCD driver board. It's a LCD kit I bought and I do not have any datasheet nor schematic with it...
One of the power supplies capacitors is microphonic and the noise is just terrible
At first I tried to swap the 1µF capacitor with a new 4.7µF capacitor but it made the matter worse. I'd like to get to the bottom of this, and have a look at the converter's datasheet.
The component is most likely a Buck converter converting the 12V in to 9V out, probably driving the LCD backlight.
The device marking is "W659".
Anyone who could help me with that?