Are you getting any fault codes?
Which switches on the matrix are specifically giving you problems?
Looks like the matrix feeds in the U30 and U39, which feed U38. U38 also is responsible for some of the matrix drives as well. I would think that if U38 had a problem that the on board test should catch it
Quoted from Gorno:
The SR11 did it! So much trouble caused by that little 60¢ resistor pack. No more PCB soldering... For now. At least my soldering skills have vastly improved.
Now I have to figure out all these broken flasher boards, and get my playfield protector on.
Thanks for updating for what solved the issue.
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