820-2936 board makes strange noise when LCD connected

[ajdoc]

Liquid damaged board - tested with new LCD and LCD cable.
When backlight works board makes strange noise - any idea what makes that noise?
Removed L9701 - no more noise, image on LCD works... L9701 back on place and noise again.

 

[ajdoc]

Backlight was always on max brightness so brightens was only as ON/OFF.

Replaced LP8550 and no more noise and brightens was fine - SOLVED.

 

[JohnB8812]

Nicely done! Definitely will keep that in the memory bank.