I have purchase this projector12 month back and be face a problem as brief below and possible solution try but the problem be still not fix . 1 -rrb- the projector power off after 30-60 seconds on start and go on stand by -lrb- yellow light -rrb- . it then show a red light of power off 2 -rrb- the projector do not start after this with the remote 3 -rrb- it have to be power off from the main and then restart 4 -rrb- earlier , this use to happen once and now it behave abnormally and sometimes it have to be restart even upto 8 time or sometimes even just 2 time 5 -rrb- after this , the projector do not shut down and movie can be watch for even as long as 8-10 hour the projector be give to a service center who do not find any problem in the hardware -lrb- power ballast , fan , bulb etc be ok -rrb- . they have suggest that the PCB mainboard should be change which cost as much as a new projector .