QUOTE(ace-user @ Nov 28 2012, 11:10 AM)
i tried reflashing the rom ady but the problem still exists..
i really can wait for 2 weeks cuz i need it for my studies =(
hopefully they'll pity me and replace my unit..lol..
Dude, the Service Centre is not gonna replace a new unit for you on the spot. The most is that they will tell you that they will replace the LCD part. If you are lucky, they have the part in stock. Otherwise, they will tell you they need to order the part from Taiwan. Total turn around time will be about 2 to 2.5 weeks in that case. What you can do is that you can request, after they have evaluated your unit, that you take it back with you instead of it sitting there as you need to use it. Then when the part arrives, tell them that they should call you to let you know and to send your unit in. Thereafter, part replacement may still need a few days as they are supposed to test it before handing it back to you.
They will only replace a 1-1 for you if they have tried to repair it unsuccessfully 2 to 3 times (usually 3, as what they told me).
From your description, it looks like you have a hardware problem - defective screen. But try what Benny suggested, flash back to stock ROM, unroot it and lock it back. This is just to see whether rooting was the cause of your problems. Highly unlikely, but better to try than having to deal with warranty claims. If problem persists, then you will have no other choice but to send it in (other than living with the defect).