I kinda like the Systems 80's just for the challenge of getting them running! I tinker more than I play though and I like electrical challenges! I hope to add Black Hole to my current list soon. Gold Wings was a hoot to work on! When I got it you had to hit the left initial button to kick a ball out to the shooter lane. Well somebody had took lamp cord and bypassed the auxiliary transistor under the playfield because it was bad. They added another switch contact to the left initial button and hooked one leg of the lamp cord to the coil and the other to ground. Multiball anytime you wanted it! Fixing the daughterboard was a experience also!

I'm currently shopping an Amazing Spider-man and boy has it been an adventure! I get the game and it is DOA! First thing the MPU has acid damage, I can wiggle the entire pin header for the 5v and gnd connection at the power supply, and the original orange cap.

List of repairs so far:
1. Replaced the orange cap.
2. Reflowed all the connections on the power supply.
3. Replaced the MPU with a Rottendog at owners request.

Once I did all of that I fired the game up and it booted, but the displays were flaky. (Connector issues)
4. Repinned every connection at the MPU and power supply.
5. Rebuilt the driver board harness with a docent kit

Fired the game up with the solenoid fuse out and the displays are now working great and all switches are working. I turned it off and reinstalled the solenoid fuse. Turned the game on and the pops lock on. I unplugged them for now to test further and find the 1 amp fuse in the pic blown. I replaced it and it blew again when I started a game. Looks like i'll be investigating those coils and the pop bumper boards today. What sucks is after I get it working I get to tear it back down to clean it up. Long live Sys80!

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On the Gold Wings I had the sound would quit working from time to time. It was the connector that supplies 5 volts at the power supply to the soundboard. You could tell the connector had heat damage at that pin and the pin clearly didn't have any spring tension compared to the others.

Your non booting issue sounds like a carbon copy of the one I had with broken solder joints on the cpu daughterboard. Power the game on and tap the daughterboard and see if the game boots. I know that sounds random but mine would boot sometimes if I tapped the daughterboard. I desoldered the daughterboard, reflowed solder, and it worked perfect afterwards.

Got a question on a Sys 1 Ni-wumpf board maybe one of you guys could answer for me. This is for the new board not the legacy.
Is the ni-wumpf board supposed to do the 5 sec delay on power up? Is no 5 sec delay an indication of a slam tilted game? Does the ni-wumpf board show the high scores and run the attract mode in the lamp matrix even though the game is slammed?

I know on a stock board no delay is for sure a slammed game, but a stock board won't flash the high scores either when slammed.

I talked to ni-wumpf and apparently the new system 1 board ignores slam tilt unless there is a game in play and has no 5 sec delay. Had me totally confused on troubleshooting because of that. I thought no 5 sec delay on a Gottlieb means a slam tilted game always, but it doesn't. I found a short to the coin door in the switch matrix which seems to have fried Z14 on the ni-wumpf board.