Graphic engine Problem?

Hi everyone,

Currently i'm using 2 Dl.2 in a nightclub in Montreal. Since 1 week or so, one Dl.2 is losing Green on everything and i see some red stripe in the image, at first i throught it was my S-video signal but when i switched to stock content it had the same problem. I found a way to solve this issue. The solution is by restarting the Graphic engine systeme each hour since the problem come 1 hour after we start it. I just want to know if there something to do to solve the problem permanently?

Thanks, Anthony