Burnt GI traces on power supplies of Time Machine and earlier

Data East service bulletin 16 says the GI traces on power supply boards of these games are too light for the current and can burn, and gives a modification. The change was built in from Playboy on.

Systems

• Data East CPU Version 1/2

Games

• Laser War
• Secret Service
• Time Machine
• Torpedo Alley

Related tips

• GI will not switch on or off: power supply relay RY1
• Alphanumeric games need the 520-5000-00 supply
• General illumination dead or dim
• Adding jumper wires across DB1 and C4 (520-5047-00/-01/-02)
• Power supply board versions are not interchangeable
• Game shows ROM versions and speaks, then nothing (burnt 3J1)
• Z1 on the power supply is a varistor, not a diac
• Power supply board versions and their +5 V filter capacitors

Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part One, Clay Harrell (pinrepair.com)