C80 screen sometimes not working

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum speakrdude,

It is recommended that the C-Series Classic MFD's (C70, C80, C120) power cable be unplugged and that the loaded system voltage be measured to ensure that it is within the operating range of the MFD (10.7-32.0 VDC). If so, then the MFD would be deemed to have suffered an internal failure necessitating that it be serviced by Raymarine’s web site. More often than not, the reported problem would have been caused by an unseated cable inside of the MFD. In far fewer instances, the problem results from a component failure.