Part of the display light on the SPO2 read out is out. Fixable?

Part of the display on my Onyx

SPO2 monitor ( by Nonin) has gone out. What would I need to repair it?

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

crwdns2934109:0crwdne2934109:0

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