Recently just purchase oppo 981 in Jan. It works fine using hdmi output frm the dvdp to my optoma h27a via dvi-hdmi convertor (daiyo is the brand). But last wk, from wed unti sat to be exact, my project cannot receive any signal for the source. Nothing it change or touched. No change in cable, nothing. But it just refuse to sync. On Sun, i tried again and surprised it works. I watch 3 dvds straight thru without a problem. I also tried to change the source and change back. It works. But after that later in the evening, it fails to sync again. Anyone has this problem? Any solution for it?

My gear:
optoma H27A
daiyo hdmi -> dvi convertor
stock hdmi cable.