Sorry little tech help needed here from the U.K. - I have a flakey drop target bank opto on WPT which when switched was still intermittent (fine in test, I switched the game on, triple reset on all banks again, put it back in test and that opto closed all the time again) going to replace the SMT4148 with a pin through hole one providing I can get it on (if not maybe use a tool to create a hole through the trace, we will see...)
I will swap boards before this to check it’s not a wiring issue before attempting this, but does anyone know the rating of this 4148 or have any other advice.
UPDATE
So I swapped the opto boards and the problem stayed on the board - ruling out the board.
So.... there were two switch issues with this when I got it, the right ramp made opto's and the king resetting, looking into the switch matrix... they all sit on the 04 return - now as switch 20 and 36 all work absolutely fine, so I am hoping this isn't a driver board issue or they would play up... Right?
Seems to be the little board at the back (520-5239-01) - which is causing the problem, if I switch the opto's on the right ramp made pair, it recognises the switch (as a different switch obviously) being made.
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