Thread: trouble with map card

I have a navionics card for my hummingbird and sometimes I can not get my maps to come up at all . it is like there is no card in the unit, anyone else ever had this happen

If there's 2 SD card slots - you can try the other slot ...

Or you can try the card in a different unit ...

Is the "Loading Charts" pop up showing at the top of the screen ...??

Rickie