Hello,

I have an issue on an AFM pinball. When the strobe is being fired, some solenoids and driven lamps are also fired.

You can see a video here :

(you can hear solenoids with sound up).

What has been done so far :
- All Capacitors were changed on the strobe lamp PCB assembly
- No flux residue on the strobe lamp PCB assembly
- Ground straps have been verified
- U3 and U11 (ULN 2803) were changed on the driver (thanks to Martin from pinbits for pointing that)
- To try to isolate the problem, I replaced the driver Pcb assembly with another driver from WPC95 game (NBA Fastbreak) => Always the same problem.

Any clue ?

Thanks for helping !

Thanks for your reply. I've just changed all the diodes on the strobe board, and verified they were in the correct direction. Issue is still here ...

I finally found ... The problem was not happening when the strobe was disconnected.
The issue was a bare wire between the strobe board and the strobe ...

Thanks Foreflow for your help !