Need some help troubleshooting an issue with Capcom Pinball Magic. A group of solenoids quit working suddenly during gameplay (someone else was playing at the time).

In doing some testing, the drop target reset solenoid, ball trough solenoid, kickback and left and right slingshot solenoids are not functioning. Apart from the drop target solenoid, the common denominator is connector J-14 on the boar. But other solenoids that run off J-14 are working fine. I reseated J-14, checked for pinched wires or shorts throughout the underplayfield wiring. Capcom 'troubleshooting' menu is not showing any solenoid or other errors. I am thinking the next step is to check the power coming from the pins on J-14 - any other advice is appreciated, or if anyone has run across anything similar.