Could you try tilting the camera back and forth (horizontal/vertical and tilting the camera up and down), this is when my connection loss occurs. I see it by watching the flash icon on the cameras backside screen, it flicks off and on, or it flicks off till I tilt the camera in another way.
This is a pretty serious issue I think, and I've had it happen on both my cameras. Ugh.
What’s wrong with making it a tighter fit, Sony?
And I would have preferred if the shoe itself was made out of metal.
I had my HVL-F36AM sent in before I got the A700, they changed the shoe but the issue was not solved, there is still play and loss of connection (on the A100 at least).
I think the issue is that the play is back and forth, so it moves just enough to make the spring loaded pins (on the flash) lose contact with the cameras little connection plates in the shoe.