Again friends, I need your support!!!

Waiting for my tomorrow pickup (a very nice Hyperball at approx. 3 hours away from me), I'm facing another time with my Firepower 2, especially with its CPU...
I'm starting to hate it!
What happen? The pinball seems to go correctly in attract mode but, once powered, it has a sort of a "bump" to all the solenoids and the first ball is thrown in the channel. The player has to launch the ball in the playfield (still in attract mode), then he can play normally.
My first thought was the driver with problems but once changed with another one, the problem still remains.
So I decided to put the cpu on the bench:
- Ok with Leon test rom
- Ok with Andre boot (I don't have the "knight rider" effect and once pressed the diag button, the program freezes)
- NO Albus rom because I'don have 2532 in my hands.
Here below a link to a short video where you can see the test with Andre Boot rom. The cpu is jumpered for a 2716 in IC17.

So, the final question... any suggestion for me?
Thanks in advance
Ciao

Loris

An update.
I had a chance to install another sys7 cpu from a pharaoh and the problem at star-up disappear.. no solenoids activated when the flipper boots.
So it means the issue is in the cpu… but, where?!