Finally solve the problem after placing a power strip(with on/off switch) between the HD box n the wall socket. Have to switch off the main power(not the standby power switch on the remote nor the button on the fron tof the box) of the box after my projector or plasma are ON, n then power on the box for a full reboot.
I have tried every other way that u guys mentioned here n it is the only way that works for my system.