Pinball Machine Flipper Not Working? Quick Diagnosis & Fix

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If your flippers suddenly stop snapping, the ball rolls away and the game feels dead—don’t panic. This guide shows exactly how to test the coil voltage, inspect the microswitch, and replace a bad coil, so you can get back to scoring in minutes. Follow the step‑by‑step flow and you’ll know which part to fix without endless guesswork.

Why a Pinball Machine Flipper Not Working Is Usually an Assembly Issue

The most common culprits live inside the flipper assembly itself. A burnt‑out coil or a dirty, broken microswitch can silence the flipper even when the power is perfect. Understanding where the problem hides saves you from chasing phantom wiring errors.

1️⃣ Test the Flipper Coil Voltage

1. Unplug the machine – safety first.
2. Locate the large copper‑wound coil under the playfield near the flipper bat.
3. Set a multimeter to DC volts, place the probes on the coil’s two lugs, and have someone press the flipper button.

• You should read around 50 V while the button is held.
• No voltage or a very low reading means the coil isn’t receiving power or the wiring is broken.

2️⃣ Check the Microswitch

If the voltage looks good, move to the tiny microswitch that tells the coil when to fire.

1. Keep the machine unplugged.
2. Switch the multimeter to continuity (or ohms).
3. Press the flipper button and probe the two switch terminals.

• You should see near‑zero resistance (continuity) when the button is down and an open circuit when released.
• No continuity indicates dust, a weak spring, or a failed switch. A quick spray of contact cleaner often restores function; otherwise, replace the switch—it’s cheap and easy.

3️⃣ Replace the Coil (If Needed)

When the coil shows no voltage or reads open resistance, it’s time for a swap.

1. Unscrew the mounting bolts and note the wire connections (a quick photo helps).
2. Remove the old coil and slide the new, exact‑match coil into place.
3. Re‑attach the wires exactly as before, bolt the coil down, and re‑test the voltage.

A fresh coil paired with a clean microswitch brings back that satisfying “pop” we all love.

Quick Reference Checklist

• Unplug the machine before any inspection.
• Voltage test: ~50 V when button pressed.
• Microswitch continuity: near‑zero when engaged.
• Replace coil if voltage is missing or resistance is infinite.

Keep a small notebook handy to jot down each test result—this turns a frantic moment into a systematic win.

Bottom Line

Start with the voltage test, move to the microswitch, and finish with a coil replacement if required. The process is quick, inexpensive, and restores your flippers without guesswork.

Enjoy the game again, and if you found this guide helpful, subscribe to the Pinball Fix Blog for more fast fixes and pro tips.