Hi all.

Yesterday I went out to fly.
Before fueling, I turned on my 3500 EFIS as usual to check fuelquantity. The 3500 turned on normally. Then I turned power off and refueled.

After refueling, I strapped in the a/c and turned on power before start.
But then the only thing which became visible on the screen was the AFS-logo, The usual letters indicating that the unit was initializing wasn't there.
The EFIS wouldn't go into initializing mode either; the AFS logo was the only thing showing and that was it.

I recycled the avionics-power but no change.
I then started the engine without the engine instruments (kind of stupid, I know...) so I could get the generator on line and hopefully get the 3500 to initialize then.
The 3500 still wouldn't intialize. The only thing showing was the AFS-logo as it had been the whole time.
Then, after recycling avionics-power, the small letters in the middle of the screen apppeared indicating that the unit was starting up.
After that, everything was normal, and all through the flight too.

Has anyone ever had a similar experience? This made me alittle worried that the 3500 can be in the process of quitting on me?

I'll add that the 3500 has up until yesterday performed flawlessly.