Help! Navman 5505 not reading C-Map card

[Fossil]

I inherited a Navman 5505 chartplotter when I bought "Catherine", a Nova 28 in Auckland this year. It was fitted with a C-Map chart covering the Auckland region. As I have now transported the boat to Wellington, I bought a new C-Map card covering all NZ waters.

Unfortunately, it would seem that the Navman won't read this card as none of the detail shows up when it is turned on. The external aerial is plugged in and the set seems to be functioning just fine as a GPS, as it gives a good location for boat position, and displays COG and SOG on the data display but it is a bit irritating to have the charting potential unused. The only chart I can get it to display is the inbuilt world-map, which won't go below 29 nm resolution, useless for navigation.

I have read the manual forward and back and can find no reference to this problem. I am sure that I have inserted the card properly, but the detail just won't show up and the unit does not display the card on its internal reference page.

Does anyone have any suggestions? NZ is not rich in specialist advice on this sort of thing and the unit is slightly obsolete anyway. I may have to jettison it and get a new unit, but thought I would see if the readership of this forum could help out first.

 

[Cloven]

I had a similar problem with a previously owned Navman 5500i when I bought an updated chart chip from C-map. Turns out the chip was faulty. However, first things first. Did you buy the chip as an exchange from a c-map dealer? Just asking to make sure that you have indeed got the correct format of chip. If yes, then I suggest you take both unit & chip to a dealer and get them to check that the chip is working OK. (The reason I ask this is that when I moved from my 5500 to a Standard Horizon plotter, although the chips look identical, they have a different software format and so are not compatible.)

I was convinced that my unit was faulty and took it to the Navman workshop. They confirmed that the unit was OK so I took it & the chip to the C- map offices and initially they would not accept that it was a faulty chip but on testing it found that to be the case and they replaced it on the spot. All then OK until I sold the unit some years later. Good luck.

 

[West Coast]

I inherited a Navman 5505 chartplotter when I bought "Catherine", a Nova 28 in Auckland this year. It was fitted with a C-Map chart covering the Auckland region. As I have now transported the boat to Wellington, I bought a new C-Map card covering all NZ waters.

Unfortunately, it would seem that the Navman won't read this card as none of the detail shows up when it is turned on. The external aerial is plugged in and the set seems to be functioning just fine as a GPS, as it gives a good location for boat position, and displays COG and SOG on the data display but it is a bit irritating to have the charting potential unused. The only chart I can get it to display is the inbuilt world-map, which won't go below 29 nm resolution, useless for navigation.

I have read the manual forward and back and can find no reference to this problem. I am sure that I have inserted the card properly, but the detail just won't show up and the unit does not display the card on its internal reference page.

Does anyone have any suggestions? NZ is not rich in specialist advice on this sort of thing and the unit is slightly obsolete anyway. I may have to jettison it and get a new unit, but thought I would see if the readership of this forum could help out first.

I had exactly this problem earlier this season, when my 5607 unit suddenly stopped working, exactly the same symptoms as you. Have taken the navman apart to look for anything obvious, including internal battery but nothing. Unit is 7 years old, so hesitant to spend money investigating the problem, so considering new replacement.