The chart plotter worked perfect for 5 yeas,

If you are having trouble loading charts on your Raymarine E80 chartplotter, there are several things you can try to troubleshoot the issue:
1. Check the chart card: Make sure that the chart card is inserted correctly and that it is compatible with your chartplotter. Some chartplotters require specific types of chart cards, so check the user manual or contact the manufacturer to ensure compatibility.
2. Check for software updates: Make sure that your chartplotter has the latest software updates installed. You can check for updates on the Raymarine website or by contacting customer support.
3. Check the chart source: Make sure that the chart source is set correctly on your chartplotter. If you have multiple chart sources (e.g. internal memory, external card), make sure that the correct source is selected.
4. Check the chart format: Make sure that the chart format is compatible with your chartplotter. Some chartplotters only support certain chart formats, so check the user manual or contact the manufacturer for compatibility information.
5. Check for obstructions: Make sure that there are no obstructions blocking the GPS antenna or interfering with the chartplotter's reception. Obstructions can include tall buildings, trees, and other objects that block the line of sight to the GPS satellites.
6. Reset the chartplotter: Try resetting the chartplotter to its default settings. This can sometimes clear up software glitches or other issues that may be preventing the charts from loading.
If none of these solutions work, you may need to contact Raymarine customer support for further assistance or repair.

Take care and have a great day! -Alex

Got you covered.
Here is the link to your owners manual.
Hope this helps.
-Steve
http://www.lowrance.com/Root/Lowrance-Documents/CA/HDS-5-7-5M-7M_OM_EN_988-10041-001_w.pdf

press menu and select return to vessel. Regards Phil.

Likely your DSM25 (that little box that connects the transducer to the display) will need to be rebuilt. The red LED is saying that there is an internal fault with the unit. You would need to send the unit in for repair through Raymarine (as there really is not anyone else who can do it), and they would have to replace the main circuit card in the box. I believe that they are charging either $150 or $175 to repair those now... but likely the only way you will get that one to work again.

Check to see if this is a power issue by connecting to shore power and fully charging your batteries overnight with instruments off. While still connected to shore power, with batteries fully charged, turn on C80 navigation system. If the loading screen comes on and does not reset, then try holding down the button immediately to the right of the red power button for at least 3 seconds to see if the system re-boots.

Send it to Auckland back they can install witha C-MAp card a new
Software.
BUT it is verry important that you make after the instaltation a MASTERRESET.
If not you will have the same problem in a few month again

I have one of these same units brand new for sale real cheap

Make absolutely sure that all of the buttons are clear (not stuck). After that, begin by unplugging any external interfaces (including the chart card) one by one to determine if one of those is the culprit.

get a new burn on the chip, I have seen this issue on a particular burn.

Hi Matt,

There is a feature in these chartplotters called "Plotter Mode" that is often misunderstood and causes the exact problem you describe.

Press menu.....chart setup.....and scroll to the bottom until you see Plotter Mode in the list of options. It should be set in the OFF position.

If you have more than one display networked onboard check the setting in each one invividually.

What Plotter Mode does is allows the chartplotter system to access range scales not supported on the chart. It is not normally used for map-based navigation but more so for chartless electronic plotting (it can display routes, waypoints and track-recorder breadcrumbs.) open-ocean cruising, or for ultra-precise GPS operations (like a precision anchor drop, finding a very specific location etc. When plotter mode is on you can zoom in to a very, very small working area. The indicator it is enable is the cross-hatch background on the screen, the lack of map information, and the NO CHART DATA watermark on the screen.