Avidyne PFD flickering (2006 Saratoga)

[Jcowden]

Anyone ever see the Avidyne EX5000 PFD display start flickering intermittently? I first noticed it in flight, with a very long duration flicker (about every 20 or 30 secs). It seemed to coincide with setting the prop to high RPM for landing. I thought maybe a loose connection and vibration. I checked the obvious from under the console and saw nothing amiss. After a few flights, the problem showed up in cruise and persisted about every 3-5 secs for the entire flight, where the LCD display image seemed to "shift" up about 3" for the blink of an eye, then returned to normal. Upon returning from that same trip, the problem seems to have totally resolved itself. Probably just waiting for a solid IMC day to totally fail. No adverse control affects or lack of capability were noted. Even the autopilot was fully functional during the issue, with altitude and course changes. I mentioned this because it is largely controlled via the PFD. Thoughts?