Radius S-3F 4-pin monitor worked fine yesterday but will not show pc data today. I get nothing but a lit blue screen. All self testing data shows up as usual and says it is working properly. I switch to a different S-3F and it works properly on this pc so I know it is the monitor. Does anyone have a circuit diagram for the 4-pin power in. Why won't it display the pc input. Thanks.

Computers & Internet - KDS - Radius - Radius RAD-5 15 in. Flat Panel LCD Monitor