I believe that some monitors have a shut down mode that is invoked if no activity is detected . If I am wrong, I apologize. In any case, a schematic is what I need in order to investigate where the shutdown is occuring. Gus Hi Gus. monitors do not have screen saver feature because thay can not determine when you are using your PC or not so lets change the name you have a problem like screen saver. there are meny reasons can cause this problem . I would start from the power supply. to find this problem first you need to get variable transformer. instead of connecting to 110 volts bring it down to 90-100 use it for a while if did not happen again that means 90 % power supply problem causing X-ray protection to turn on. -- Gus Calabrese Lola Montes WFT Electronics 4337 Raleigh Street Denver, CO 80212 303 964-9670......voicemail wft@frii.com http://www.frii.com/~wft EMERGENCY: 791 High Street Estes Park, CO 80517 if no success with wft@frii.com, try .... wft@bigfoot.com then wft@eudoramail.com