Rectifier test point ranges with fuse and rectifier
TP1: 4.6 to 6.2 V DC on -18 (F1, BR1) or 5.8 to 7.2 V on -49/-54 (F1, RP1/RP2). TP2: 203 to 257 V DC (F2, CR1-CR4). TP3: 11 to 16 V DC (F3, BR2). TP4: 6.3 to 8.3 V AC (F5, no rectifier). TP5: 43 V DC plus or minus 5.4 V (F4, BR3).
The score display supply runs at 170-230 V DC; keep hands off the rectifier and driver boards with power on.
Systems
Related tips
- Rectifier board test point voltages
- Rectifier test point reads below its range
- What each rectifier on the board feeds
- No +5V on any board and no MPU LED: bad return pin in the solenoid driver board J3 plug
- The three Bally rectifier boards
- Upgrading the AS2518-18 / -49 rectifier board
- Bench testing a rebuilt rectifier board
- Backbox GI out and fuse F6 blowing: burnt rectifier J3 plug and a shorted bridge
Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part One, Clay Harrell (pinrepair.com)