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darkbrit

My Chart Card from Jun 2005 has been read by the C80 (2008) since buying the vessel (Hunter 33) without issue for 2 years. A few weeks ago - the Card would momentarily (a second) display the chart and disappear. Thinking it was the FC, I purchased another 128MB card on-line for the same area but dated Jan 2006. It behaved exactly the same, which indicates the problem isn't the card. I've tried a reset (not the full factory reset that would delete the way-points) and searched the menu for a likely cause, but nothing stands out as the problem.

Card info:

US Southeast-Bahamas
CF/1G906XL3
Jun 2005
128MB CF
Any help much appreciated....

PS

I don't wish to update the firmware as the plotter works fine, but I did purchase a 16GB Chart Card with an intention to do so when I bought the boat, but there appeared to be too much confusion from Navionics as to the process and whether the card purchased from West Marine would work - so I decided not to risk it.