Hello sir my LG ultra Slim tv 21 inc 500 watt sound system m color low problem brightness low problem hai. Mistri ne color ic change kar di but problem same hai or color ic change hone se sound se bass dad ho gai hai EHT se brightness full hai. Koi mistri kahata hai ki picture tube charge hogi to koi memory ic bhi change karne ko kahate hai. problem solve nahi ho rahi aap sir koi solution de to bahut abhar koga ? Please reply me sir me bahut pareshan hu color ic no hai TDA12135PS/N3/3MB5