Part 7: 1977 Allied Leisure Getaway Pinball Project. IC Chips & Plunger fun!
Allied Leisure Getaway restoration: power supply fixed, plunger working, MPU boot troubleshooting via IC chip reseating.
Part 7: 1977 Allied Leisure Getaway Pinball Project. IC Chips & Plunger fun!
I reseat and swap IC chips around. I get the plunger working and a few light bulbs yay!
Synopsis
Mike Dus continues restoration of a 1977 Allied Leisure Getaway pinball machine, focusing on power supply repair and plunger assembly. He successfully replaces a potentiometer, stabilizes voltage output, and tests the MPU with mixed results showing signs of life (solenoids firing, LEDs lighting) but incomplete boot. He then tackles IC chip reseating on multiple boards to diagnose boot failures, discovering a missing 7414 chip and damaged 6530 ROM legs, leading him to consider professional board repair.
Highlights
- The potentiometer replacement holes on the Allied Leisure power supply board were marked 'alt' (alternate option) and fit the new potentiometer perfectly
- Joe's Classic Video Games' power supply version used a rectangular square-style potentiometer instead of the original component, showing two different board revisions exist
- John Ed Robertson's lamps and solenoids chart on flippers.com contains crucial diagnostic information for identifying solenoid coil numbers (e.g., 1000 point chime coil is Q36)
- AC ripple (unwanted AC voltage in DC lines) can cause MPU crashes and instability on vintage pinball machines
- The 7414 IC chip is present on the working reference board but missing from the board Mike is trying to boot
- The three rare 6530 ROM chips must be installed in specific order (11 top, then 9, then 10) and cannot be interchanged
- The 6530 and 6520 chips are the rare/obsolete ones on Allied Leisure boards; John's Jukes makes replacement piggyback boards to substitute for three of them
- One of the three reference boards had four to seven pins on a 6530 chip that were never installed at all, indicating poor original installation
Notable quotes
“That is a perfect fit. Look at that. How lucky did I get?”
“So, notice how I didn't have the MPU connected because if that voltage somehow skyrocketed, uh, I could have blew up my MPU.”
“Ooh, it's searching for a ball. That is a sign of life, I think.”
“I do have general illumination, but didn't I have general illumination on the playfield before? Can't recall now. Feel like I had more light bulbs before. I think this is a bad sign.”
“I'm going to wrap it up here. I've got barbecue cooking some chicken happening right now. So, that is uh a little more exciting than dealing with this right now.”
“So there's something new that I learned. So there we go. The three 6530s in the proper order.”
“don't tell Jamie, but I may have cut a little bit of the plastic chair that I was using as my workhorse with my jigsaw”
“The ball was just kind of like plunging up to about here and then clunking back down, which explains why The shooter that I pulled out of the other machine had two springs on it because they thought that they would bridge the gap by going with two springs.”
“All right, I am going back to the original housing. Got a screwdriver in here to cram the crack open just a little bit so I can jam some more crazy glue in there. And I'll just not tighten it as much as I did last time. I forgot I was dealing with plastic and I was just cranking on the screw.”
“This m this board never did boot up whatsoever. It was just dead LEDs. Well, someone didn't uh install that chip very well. Four, five, six, seven pins are not installed at all.”
Entities
- Allied Leisure· company
- Pinball Resource· company
- Pinball Shenanigans· content|organization
- The Pinball Show· content|organization
- Alaska· game
- Getaway· game
- Getaway Secret Service· game
- Highspeed· game
- Nine Ball Wizard· game
- Corey· person
- Ellie· person
- Gold Balls· person
- Jamie· person
- Joe· person
- John Ed Robertson· person
- Mike Dus· person
- Steve Ritchie· person
- Steve Young· person
- John's Jukes· person|company
- flippers.com· website
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