My Pinbot is just quiting mid game. Displays go blank momentarily, then give adjust switch exit ramp and adjust switch bottom jet. Then it goes to attract mode. Any ideas?
(Topic ID: 171979)
Berea, OH
The blanking out and restarting to attract mode is usually loss of +5VDC logic power. Check it here on the motherboard:
MPU IJ17 Pins 4,5,6 = +5.03 VDC @8.1 mV AC ripple
U26/U27 ROM Pin 1 = +4.91 VDC
If the power is not within those specs, the problem then is the power supply probably needs attention. Often the logic power filter cap. Cable from the power supply to the MPU board could also be the cause (fixed mine by repinning with Molex, replacing crappy IDC that just don't make great contact for transferring current flow)
The switch error is likely the MPU complaining that those switches have not worked in some time. Go into switch edge test and operate the ramp and bottom jet manually to see if they are registering at all.
I think your right. I just picked it up yesterday, so I am just running thru it. On a occasion at start, it gives the same adjust switch errors and I noticed the bottom bumper seems dead. Likely what I have experienced is a loss of 5v to logic board. It shuts off and restarts. I will investigate further. Thanks.
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