half year shold be still under the toshiba warranty,i give you the toshiba sevice center's number,you can call them directly,there is no problem for them to replace a new screen for you,and it is free.you don't need to ask other people to replace with you,otherwise,toshiba will not provide the warranty with you anymore.
the number is :514-8616741 or 514-7337092 or 514-7460867
good luck!