Digiplex on my Paso 906 did not work correctly cause to intermittent problem on vertical cylinder ignition.
Therefore, I have opened the box and I have detached all connections from circuit to the framebox.
Inside it I found the circuit completely covered with a protective rubber plus 2 big transistors. I suppose the problem was one of final power transistors. I frozen over/around it with electronic circuit refrigerant gas and immediately the vertical cyl begin to run.
Quickly, I run to buy two new transistors (BU931ZP – price € 4.50), replaced it but, with great disappointment, the vertical cyl did not work fine.
Therefore, without fear, I began to remove delicately, with a toothpick, the rubber from the circuit.
I found few electronics components under the rubber and many great lines from the transistors to external pin 10 11 12 (pin towards the coils).
When I freeze one of this lines, vertical cyl begin to run.
Sure and happy to have solved the problem, I have solder bridge from transistors (which one link to pin 11 - vertical cyl) to external pin and all it has worked.
I Am much happy, Ciao a tutti
P.S. in the afternoon I post same photos
