When the power switch is toggled from the “o” switch position (power off) to the “-“ switch position (power on), there should immediately be the sound of relay “click” and blue and green LEDs should illuminate through the perforated cover on the electronic box (when viewed from above). After less than 20 seconds, a Planar Logo splash screen should appear for a few seconds. If a live video source is connected and enabled, the image from the video will be visible directly after the splash screen. A Sources Status window from the OSD will also be visible for a few seconds. If there is no live video source connected, the default screen color will be shown (refer to the Blank Screen Color option in the “Menus and Messages Submenu” section on page 42).Refer to the “LED Indicators” section on page 30 for information on how to monitor the real-time status of the video board.Possible Problem: The power switch is toggled and nothing happens.Items to check: Make sure the AC power cable is securely connected at both ends and that AC power is available. There are two fuses in the AC power receptacle. These are 5A, 250V, 5 x 20mm, FST fuses. Have a qualified technician check these fuses.Possible Problem: The monitor powers on and shows the splash screen but afterwards remains in the default screen color.Items to check: Refer to the Inputs and Views Menu (see page 32) and select the video port that is connected to the desired video source.