Your thread title is too vague. You should put your question in the title so people know what you're asking about.
You might want to contact LG and ask them if one of their standard or OEM remotes operate your TV.
You can also try the Remote Control forum here on AVS, and also try RemoteCentral.com too.
Philips makes a great little inexpensive universal learning remote - i got the Rite Aid drugstore version for $14 as a secondary remote to keep on a desk in the far corner of the room and it capably operates my TV, AVR, Tivo, TWC DVR, and DVD player. You could try it then if it doesn't operate the TV, return it.