? about the a4 board

[padrinot]

i have aquired an A4 board for my speed
when i installed it i noticed that when the screen is backlit
it makes a slight audile noise , sort of a buzzing sound
just wondering if it is normal
it does not do this unless the scrren is backit
I have an ir3 I just havent taken the grip off to see if it does the same thing or not

any answers would be helpful thanks

[stogas]

Yes its normal

[Bugsy]

Perfectly fine.

[knicknak14]

Mine does the same.