Ok so ive been working on a friends pin for few weeks and it needed alot of love and attention however it did work just not well. Fast forward to this week and got it all back together and playing awesome just needed a flipper opto board . Turn pin on today and got tons of errors so I went into the switch test and most the optos are going off ? Ive been messing with it all day to no avail and its really making me upset bc I cant figure out what is happening and he was supposed to pick the pin up this weekend and of course I cant in this condition. Ive changed out the 10 opto board with a known working one and that changed nothing so I can rule that out.also note the pin was also haveing a gi and insert light issue occasionally but they seen fine now .if some one can help me out on what and where to look it will be greatly appreciated. Also the optos that are registering seem to be wrong ? Like I said everything has been fine and I probably played 50 games since its been back together then all the sudden this issue today ? Thax

Ok voltage is definitely low on on the board for the flashers ans optos. Only getting around 9-9.5 volts?Looking like a db issue guessing one of the br or a bad solder joint or cap or diode?

Issue fixed ended up needing some driver board work