My game has been spitting out additional balls lately. I believe I've whittled it down to LED1 on the trough board. I used my phone camera to look at the LED and it's much less bright than the others. The issue now is that whenever I drop a ball into the trough it rolls down and activates the trough jam sensor when it gets to switch 35 (trough 5). I've used a wooden stick to close switch 35 and it does not cause sw36 to close. So it leads me to believe that the ball is raised too high in the trough? There seem to be some raised bumps (the opposite of sunken-in divots. They aren't very large though) in the trough but those have always been there so this problem technically should have been happening since the first day we got it. I've tried testing LED1 but I'm not sure if the reading would be different because it runs through a resistor first. Should I be getting a 12v reading at LED1? I'm a little confused as to what to do next though. I feel like I could try replacing LED1 but I want to get to the bottom of this before I start doing anything. Also, the coil that pops the ball out of the trough isn't always pushing the ball up to the shooter lane. It fires when it should but it can't always raise the ball. New coil? I think all these problems seem to be in conjunction with each other. I have a new coil but again, I want to understand what's going on before I start tinkering.

Thanks!

all trough optos are registering

Getting a new board does seem easiest. All the solder connections on the back of the current board look like shit too. A lot of the connections have become crusty and covered in mysterious black goo.