My Stern Stars, which has been through a ringer, now all of a sudden stopped launching ball (out hole) on start up. I ran a solenoid diagnostic and found that only the credit, flipper, and chime solenoids are working. so I know its not an individual solenoid. I have in the past had to replace a resistor or 2 on the solenoid board but this issue seems to be more that just one resistor. I'm not the sharpest tool in the shed when it comes to reading schematics and so I'm having a hard time knowing really where to start my checks.
I'm basically looking for starter ideas to get me going. I'll be uploading some pics soon.