Raymarine SL72 display

You probably did this but just in case...

There are three types of reset available for the display:
• Factory Reset: This resets all values back to their original factory settings.CAUTION:The factory reset clears the Marks database and, on the SL72RC PLUSchartplotter, the Waypoints and Routes databases.
• Power-On Reset: When you turn the display off and on again, the screen reverts to the fishfinder or chart picture with all windows cleared.
• Picture Reset: Press and hold the DISPLAY key for two seconds to return the screen to the full-screen picture of the top window with all windowscleared.At power-on, the last-used values are retained for all the options, except for those listed in the following table which are reset to the factory default each time.Table 9-1:ItemHeading ModeRainFTCAlarmZoomWindowsContrast LevelBacklight Level➤ To perform a factory reset:1. Press MENU .2. Press the SYSTEM SET UP soft key to display the System Set Up page (see Section 7.3 for details).3. Press and hold MENU for 5 seconds.A countdown timer is displayed. If you release the MENU key before the timer reaches zero, the reset is not performed.When the reset request has been accepted, the system restarts

Raymarine has a great forum where Raymarine techs answer all questions. I am a pathfinder guy !!! For what I need these older electronics do just fine. Maybe I don't know any better, but I like them !! (path finder series chart plotter, auto pilot, fish finder, radar.) I have gotten some excellent support from the techs at the Raymarine forum. There are always units on E-Bay and Craigs List that can be had for a reasonable price.