Yellowed or bubbled playfield mylar
Clear mylar discs around busy spots (such as pop bumpers) or full mylar sheets can yellow and lift with age. Peeling old mylar can pull paint up with it, so unless it affects play, leave it in place. Missing paint is also usually best left alone unless you can match colours exactly.
Systems
- Williams System 3
- Williams System 4
- Williams System 6 / 6A
- Williams System 7
- Williams System 9
- Williams System 11
- Williams System 11A
- Williams System 11B
- Williams System 11C
- WPC Alpha-Numeric
- WPC Dot Matrix
- WPC Fliptronics
- WPC DCS
- WPC-Security (WPC-S)
- WPC-95
- Bally MPU AS-2518-17
- Bally MPU AS-2518-35
- Stern MPU-100
- Stern MPU-200
- Bally 6803
- Gottlieb System 1
- Gottlieb System 80
- Gottlieb System 80A
- Gottlieb System 80B
- Gottlieb System 3
- Data East CPU Version 1/2
- Data East CPU Version 3
- Data East/Sega CPU Version 3b
- Capcom
- Electro-mechanical
Related tips
- Cleaning and waxing the playfield
- Playfield glass sizes
- Routine playfield and glass cleaning
- Cleaning up after a broken playfield glass
- Playfield glass must be tempered
- Repairing a stripped playfield screw hole
Source: Pinball Machine Care & Maintenance, Bernard B. Kamoroff (Bell Springs Pinball Alley)