Backlight not working anymore

Hi,
after a fall the backlight is not working anymore. I have already tried the software reset, and it doesn't fix. I suppose it's an hw problem, how can I do?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0