Battery will not charge

Hi! Here is link to photo my tablet ( http://4pda.ru/forum/dl/post/7078909/IMA... )

On the green arrow have voltage. Pink arrow - plus from charger not come. Multimeter show break. Charger on 12 V, battery on 7.6 V.

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

crwdns2934109:0crwdne2934109:0

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