Hi guys!
Last time i manged to resolve a problem with my Strikes and Spares last switch row all the switches activates in the same time -> thanks for the community!
Unfortunately the same error comes again all the switches in the last row going to be activated if i push the outhole switch
(outhole, Slam, #8 pin star rollover, Soucer Right bumper) what causes immediately a restart becouse of the slam tilt.
This is one of the thoughest problem i have ever met
I have spend a uncountable hours to find the problem but so far no luck.
The state:
It cannot be an MPU problem i have tried with LISY35 and LISYFA MPUs.
I have replaced both of the connectors J2 and J3 (Switch Matrix MPU)
I have cut all of the switch capacitors to make sure no strange behavior like a shorted capacitor.
I have removed all of the tilt switches (i dont need them) on both sides so row and column but i kept the chain to ensure the functionality.
All switch diodes are checked -> OK! (no short, no stupid mistake like mounted reversely)
Naturally i have inspected all of the switches in the last row no obvious short to ground!
Switch test does not show closed switches what can also cause strange behavior!
All the switches are working but there is one more ugly thing:
the left return lane switch activates the left slingshot coil and the right return lane switch activates the right slingshot coil
(the slingshot switches registered correctly from the switch test and all other switches too.
What i am thinking about for last chance:
remove the last row wire from the cpu and substitue with an extra wire connected to the playfield.
May the cable for the last row has a short in the wiring loom (broken insulation) what cannot be seen ...
Thanks in advance!
strikes (resized).png