Electrical Power Delay ??

Hi
Turn the key (nothing happens) .....10sec....20sec later the instrument panel lights up.....
She then works perfectly, starts and runs etc.

Switch off and attempt a restart, same delay occurs. no electric for a period of time.

1997 m750 10,000 miles. All original. full charge. serviced by ducati fir the last 6 yrs
Budget nil
technical ability nil... i do have a haynes to refer to though

help or advise appreciated

dave