logomatic v1.0 question

hello,

i m currently working with a sparkfun logomatic v1.0 for a project and i encounter some problem:

while my 512 Mbyte sdcard is formated in FAT16 no file has been created it seems like the card isn t recognize, i have tested another card 2gigs FAT16 too without succes either.

and yesterday the LED stop blinking suddently , i though it was an overheating problem so i wait for the next morning but it didn t change anything … still not working.

my voltage seemed ok before it happened: 5V for the alimentation , and 3.3 for the UART.

if you have any idea of what i can do or where it comes from ?! because i have read some (a lot) of the thread posted on this forum without unfortunately finding any solutions.

regards.