The led lights on the panel is broken?

I have opened my laptop wrongly and I have broke the led cabel, i bought a new one but still not working. Any ideas how to check where is the problem?

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

crwdns2934109:0crwdne2934109:0

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