Gottlieb system 1 power supply schematic with voltages.
Gottlieb system 1 power supply repair.
4 3 3 recommended power supply updates repairs.
Power supply board overview.
However it is one of the trickier boards to work on because of the way the regulator is mounted through the heatsink and onto the pcb.
Gottlieb system 1 sound board original.
I also include a pdf of the schematic.
New design uses new components and runs much cooler.
New redesigned power supply for gottlieb system 1 plug and play.
But it certainly is not perfect.
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Heck it s not easy to work on either.
Untested gottlieb pinball system 1 power supply 12 21 2188 00 parts repair 1978.
The first picture below is the system 1 power supply with voltage notations plus other info.
A gottlieb system 1 power supply can be repaired refurbished for a only a few dollars in parts.
Remove the original power supply board from the heatsink plate and install this board using the same mounting holes and screws.
You can click on the image to see the full size view of the schematic which can be saved or printed.