Samsung P2270HD Service Manual

Also see for P2370HD - Full 1080p HDTV LCD Monitor: Manual User manual Quick start guide Quick setup guide Specifications

4-54. Troubleshooting4-3. PC (ANALOG) No ScreenSymptom The LED power is on but no picture is displayed on the screen when the D-SUB cable isconnected-MajorcheckpointsEven though the LED power turns on, the screen is blank when connecting the VGA cable.Check the D-sub cable connections.Check whether the LVDS cable is connected correctly to the panel.Check whether the lamp connector of the panel is connected correctly to the IP board.----DiagnosticsMain Board FrontCN1005CN8003YesNoDoes led persists green light afterpower on? Check IP boardYesNoDoes proper 5V appear at pin No.9 of CN8003? Check D-sub cable connectionYesNoDoes proper V-sync ④ and H-sync⑤ appear at C809 and C808? Check PC stateNoDoes proper clock signals appearat pin NO.11,12,23,24 of CN1005?Change main boardbecause of scaler problemYesCheck connection between mainboard and panel.Change Panel.Caution Make sure to disconnect the power before working on the IP board.