claude-haiku-4-5-20251001 (batch) · $0.012
EM restoration: Alaska's random crashes traced to single bad score motor switch via community help.
The Alaska's random death issue was caused by a faulty switch on the score motor—specifically the third switch down from the top on the second stack that handles 500 or 5,000 point scoring.
high confidence · Corey Cook (London Pinball) isolated the issue and adjusted the switch; Mike then tested with multiple full games without failure.
EM machines typically won't score while the score motor is running; if the motor stops before completing its cycle, the game can freeze.
high confidence · Advice from Facebook pinball repair help group members (Robert, Mike Hanley) discussing the mechanical principles of EM score motors.
Manually rotating the score motor cam slightly can temporarily restore game function if a switch isn't closing properly, as a diagnostic technique.
high confidence · Multiple community members (Mike Hanley, Andre Gudro, others) confirmed this as a valid troubleshooting method.
Using a Dremel with a wire brush attachment is highly effective for cleaning corroded switch contacts on EM machines.
high confidence · Mike demonstrated the technique on all switch stacks in the score motor, visibly comparing dirty (black) contacts to polished ones.
Most EM machine issues are caused by bad contacts and dirty switches, not capacitor failures.
high confidence · Rich Alexander stated this; Mike Dus agreed with the principle throughout his troubleshooting process.
“Every switch needs cleaning. Do not recap anything until you know it is wrong.”
Facebook repair community member @ ~5:00 — Core principle for EM troubleshooting that shaped Mike's methodology.
“If things stop working when the motor turns, I would point to a switch contact issue on the motor, but I feel like MJ might also engage disengage when the motor turns.”
Corey Cook (London Pinball) @ ~11:30 — Expert diagnostic guidance that led to identifying the MJ (Motor Jugadores) relay and ultimately the failing switch.
“If this doesn't kick out, we're dead. Yep. Okay. Didn't think it would be that easy.”
Mike Dus @ ~27:00 — Mike's realistic pessimism about quick fixes during the hands-on troubleshooting phase.
“That is like that's some good news. I I again I don't want to get my hopes too high up, but that's pretty impressive.”
Mike Dus @ ~51:30 — Relief and cautious optimism after the first full game played without the machine dying.
“And he tweaked it about 17 times. And we think that we might be good.”
Mike Dus (describing Corey's work) @ ~54:00 — Highlights the fine adjustment required on a single switch contact—the precise nature of EM repair.
“Thank you, Corey Cook of London Pinball. I feel like even if it happens to die once in a blue moon, now we're moving in very much correct direction.”
Mike Dus @ ~67:00 — Acknowledgment of collaborative repair success and gratitude for expert intervention.
restoration_signal: Methodical EM repair process using community consultation, schematic analysis, manual testing (motor rotation diagnostic), and precision switch cleaning with Dremel tool.
high · Mike progressively tested theories from Facebook group, isolated the faulty switch stack, disassembled and cleaned all contacts, and achieved full games without crashes.
product_concern: 1978 Interflip Alaska suffered from random mid-game freezes due to a single faulty switch contact on the score motor; issue resolved only after precision adjustment.
high · Mike documented multiple game-death incidents, worked with Corey Cook to isolate the third switch on the second stack, and verified fix through multiple full games.
community_signal: Robust Facebook pinball repair community provided multiple overlapping diagnostic approaches (motor position, relay checks, switch cleaning) demonstrating collective expertise on EM architecture.
high · Seven named community members plus group responses provided schematic analysis, repair strategies, and hands-on guidance; Corey Cook's follow-up visit confirmed and refined the diagnosis.
design_philosophy: EM machines require precise mechanical alignment and electrical contact quality; single switch misadjustment or corrosion can cascade into game-stopping failures.
high · Mike's discovery that one switch out of dozens was causing total system failure; Corey's 17 adjustments to achieve proper tension and contact closure.
content_signal: Pinball Shenanigans continues long-form documentation of EM restoration with detailed troubleshooting sequences, community engagement, and iterative problem-solving over multiple episodes.
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high · Part 12 of Alaska restoration series; previous episodes referenced; multi-week timeline shown in the content.
technology_signal: Dremel rotary tool with wire brush attachment proves highly effective for EM switch contact restoration, enabling visual polishing and corrosion removal without disassembly complications.
high · Mike demonstrated side-by-side comparison of dirty vs. polished contacts; used technique on all switch stacks with visible results; noted it as superior to sandpaper method.
operational_signal: Home EM collector addresses systemic reliability issues before tackling cosmetic/secondary concerns (pop bumper sensitivity, drop target switches, sticky reels).
high · Mike explicitly stated he would not address minor gremlins until the critical score motor failure was fixed; outlined priority hierarchy for remaining repairs.
gameplay_signal: Alaska features bonus advances via drop targets and bonus multipliers (double/triple bonus), with proper operation verified through full game playthrough after repair.
medium · Mike tested bonus calculations and heard confirmation chimes; noted some drop target switches still need adjustment but primary bonus unit functioning.
sentiment_shift: Mike's mood shifted from frustration (recurring crashes) to cautious hope to relief after successful full games; expressed gratitude to Corey Cook and community.
high · Early pessimism ('I knew not to get too excited'), mid-restoration uncertainty, post-repair confidence ('moving in very much correct direction').
personnel_signal: Corey Cook demonstrated advanced EM diagnostic capability by isolating root cause from schematic analysis and performing precision switch adjustment; relationship strengthens Mike's restoration capacity.
high · Corey's visit narrowed diagnosis to specific switch, performed 17 micro-adjustments, and validated fix; described as valuable partnership for future EM work.