(Topic ID: 326619)
Pomona, CA
Start by checking your voltage test points. Focus on the high voltage section that supplies the displays.
The high score/ball indicators are lit by bulbs and are separate from the hv plasma displays.
1 month later
Quoted from JCO25:The fuse is fine, not broken. What to try next?
Must measure the voltage as instructed.
Quoted from JCO25:TP1 is reading 120VDC.
If you measured correctly, half voltage on the solenoid driver board at TP1 indicates a faulty (open circuit) 1N4004 diode on the rectifier board.
With the machine OFF, you should test diodes CR1, CR2, CR3 and CR4 on the rectifier board with your multi-meter set to diode mode. Make sure to test a few minutes (2 or so) after you've powered down so there's no remaining residual voltage that could damage your multi-meter.
Quoted from PinballManiac40:Your measurements should be close to what is labeled on the board.
First question I would have is, what did you use for the ground?
How long did have this board? If you measured it correctly, then I would be contacting Alltek for warranty repair.
[quoted image]
The board has been in for the last 2 years. I used the ground wire in the backbox next to the cords.
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