No backlight after light water.

No backlight after light water- all else seems to work

Only briefly wet in fresh water, dried in rice for days and now appears to have everything working (including touch functions) but screen stays black. I disassembled and cleaned all contacts. Saw no corrosion. I can access all files via USB to computer link. Incoming Email and text notification alarms continue. Battery will recharge.

Anything else to try other than new digitizer? Thanks