I have a theory and I hope not too expensive.

In a thread I posted last year I had a weak rhs top flipper and in investigating I noticed that leads J104 was plugged into J105 and opposite with the J105 led plugged into the J104 socket. I did post a enquiry and no real definite answer so thought I should return back to how the manual states it and swapped it from what it originally was thinking it may be linked with the flipper weakness.

Note: the topper was working before this (I think) and for some reason zoned out and never noticed it not on ???? go figure.

In another thread -
http://aussiepinball.com/index.php?topic=5976.0
Is there a chance I have booted the pcb with higher voltage and cooked something with returning J104 and J105 to how it states in the manual.