Thanks bro, i tried and everything work fine. Only problem i face is i can't press the "on" on plasma to quit.
(I have to switch off the TV set and on back)
And i also got the information i need.
Total time is 78 mins and counts = 25!!!

Which mean the set i got is not a new one. The most i on n off the TV set 5 times.

Yes, i have to agreed the shop give me a very good price.
It is RM33xx with free gift w/ 3 yrs warranty or RM35xx with free gifts w/ 5 yrs warranty.

Anyway, i hv call up the shop and the first time he told me it is 100% new but promise he will check with his HQ.
The second time he call, i told him i manage to get in the service manual and told him about the time n count.
Quickly he told me he not sure what the HQ have done and he will call to ask his big boss.

Lastly, today he call and say he agreed to change a new set for me and meanwhile ask me to use this set first.
I will update the status here when i got the new one.

Thanks for everyone help...btw this plasma is really good n i like it very much!