A20 + 7 inch LCD flickering

[aauer1]

Hi,

I use a board similar to the A20 micro together with a 7" LCD (the same as Olimex sells). What I see is that the LCD is a bit flickering (not the full display area only some parts). It seems like some parts of the display are sometimes varying in their brightness. It's hard to explain how it exactly looks.
But maybe someone has experienced similar issues with the 7" LCD!? Maybe someone also knows what's the reason for this.

Thanks,
Andreas

[Lurch]

7" LCD (the same as Olimex sells)

Is it the Olimex LCD or your own?  Sounds like an improperly dimensioned voltage step-up circuit which can't keep the backlight current constant.

[aauer1]

Is it the Olimex LCD or your own?  Sounds like an improperly dimensioned voltage step-up circuit which can't keep the backlight current constant.

You were right. The step-up circuit for the 10.4V voltage was a bit unstable due to a capacitor I assembled wrong.
Thanks for pointing me in the right direction!