Quoted from wayout440:

Repin those pesky connectors! Honestly, for an evening of work or a couple of days depending on your experience level, is one of the best investments in getting a machine to work reliably.
As far as having multiple solenoids fail, usually this is one of several things. The power is daisy chained from one solenoids to the next, so one broken wire or solder joint can cause all of those downstream to fail. Check both sides of solenoid fuses, including any under playfield fuses, for DC solenoid power using a DMM.
Those are some starting to points, if you get stuck post some more details and we'll all try to help out.

Quoted from slochar:

By ball pop do you mean the free game knocker? If so the under playfield fuse for the solenoids is probably blown. Flippers still work when it's blown because they are before the fuse (the rectifier board solenoid fuse handles those).
If not and you meant the ball launcher is working, it's likely the broken wire chain. Unlikely that all of the connector pins are bad for every single other solenoid, verify the wiring first.