TC problem

Hi Everyone
I'm affected by strange problem with TC. My macbook has lost connection to time capsule disk. I can't make backups (but router functionality works fine).
This what I've already done. I did TC reset to factory settings but after that I couldn't connect to TC (unexpected error !!!). So I configured it via Windows 7. Windoz didn't have any problem with connection to Time Capsule. Anyway I still can't see TC disk in finder.

Any help appreciated