The game boots and starts, the flippers work, but the playfield solenoids do not. In solenoid test the coin lockouts, flipper relay and knocker may still work.
Flippers work but no other playfield coils do
Cause: The 1 A slow-blow solenoid fuse under the playfield (usually on the right near the flippers) is blown, or the brown wire from it to the flipper coils is broken.
Checks
- Pull the under-playfield fuse and test it on ohms.
- Check the brown wire from that fuse to the flipper coils for a break (page 22).
- Because the MPU finishes its seventh flash, the main 43 V fuse on the rectifier board is known good.
Fix
- Replace the fuse and holder if needed. If it keeps blowing, look for a shorted coil, bad coil diode or a pinched coil wire rather than a driver transistor.
Systems
Related tips
- Rectifier board and playfield fuse ratings
- Playfield coil fuse blows at power-up: shorted outhole kicker coil
- F4 still blows with the playfield coils out of circuit
- Pop bumpers and slings die minutes after a driver board swap: playfield fuse
- Find the coil that keeps blowing the playfield fuse
Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part Three, Clay Harrell (pinrepair.com)