Sorry for a longish read but
Mate bought a NGS non working. He’s got it up and running but not one coil works in coil test or game play. Ground the transistor tab and the relevant coil fires.
Fuse and holder under playfield are both good. Has replaced the mpu and power supply board with known working ones. There is good continuity between J4 on the mpu and J4 on the psb. The 5v line reads 5.24v. All coils read 43v. I’ve spent a few hours on it trying various things and now I’m at a loss. Anyone any ideas. Ken
Mate bought a NGS non working. He’s got it up and running but not one coil works in coil test or game play. Ground the transistor tab and the relevant coil fires.
Fuse and holder under playfield are both good. Has replaced the mpu and power supply board with known working ones. There is good continuity between J4 on the mpu and J4 on the psb. The 5v line reads 5.24v. All coils read 43v. I’ve spent a few hours on it trying various things and now I’m at a loss. Anyone any ideas. Ken