Cross posting this across various forums in order to get most exposure. I am bringing a 1981 Volcano back from the dead and restoring it to add to my Gottlieb collection. I am so close to completion and playing the machine, that it is now driving me crazy.

I have now hit a road block and wall, and I am stumped and don’t know where to continue with my troubleshooting. The machine was energized, and booted when start button was depressed. Started checking all kickers, pop bumpers, slingshots, switches, etc. and found the right side drop target bank had an issue. Found the drive transistor (2N3055) was shorted, so replaced it along with a new solenoid coil. HOWEVER, I did not check the position of the diode and it was backwards. After the drop target reset would not reset, with new coil, I found my mistake and and corrected it. The drive transistor and pre-transistor are both good.

Sorry for the long, back history but here is the current situation:

1). When turned ON, the pinball boots and I have full attract mode and all displays. The high score to date also cycles as normal.

2.) At the start up THUNK (solenoids), the ball release energizes and allows the 1st ball to roll into the shoot ( before any start button is depressed).

3.) When START button is depressed, the outhole kicks the last ball into the holding shoot, BUT no ball release or anything else. The 1st player is flashing “0” as the display is showing game ready, BUT there is no action:

• no flippers
• no rollovers, switches, slingshots, etc.
• only general illumination lighting with a couple of insert lights that stay on
• the pinball seems to be “ dead “

Does anyone have any insight, knowledge, or guidance of what the problem may be? Any leads or direction where to look? I appreciate any help or assistance. Thank you all.