How to fix a slot machine

Updated February 21, 2017

Slot machines are located in casinos and public entertainment venues, but they are also located in homes and smaller businesses. Although slot machines are fun, frequent use can cause problems to arise. It is important that an individual know how to fix a slot machine in order to maintain it and save money. The process of fixing a slot machine is relatively straight forward and few tools are required. While repairing a slot machine, check all of the parts to ensure that the machine is operating smoothly in order to avoid other potential problems.

Check the slot machine power source to verify that power is being transmitted correctly. Unplug the machine and use a screwdriver to remove the back of the slot machine. The Slot Machine Oasis website explains how to slide the hopper out along the metal guides and remove it from the machine.

Locate the black power cord that enters the slot machine on the right side and find the power distribution unit that is located on the back wall of the slot machine. Make sure that the black power cord is securely plugged into the power distribution unit. Restore power to the slot machine to ensure that it is correctly powered.

Use a screwdriver to loosen the slot machine mechanism and then remove it from the inside of the slot machine. The Game Room Antiques website explains that slot machines can become jammed with nickels and require special attention in order to fix the problem. Once the mechanism is removed, check the coin escalator to see if the coins are jammed.

Locate the jammed coins and use a screwdriver the separate them. If necessary, the front portion of the escalator can be removed in order to gain more access to the coins. Cycle the escalator manually and test it by pulling the external lever all the way down, and then pushing it back up, allowing the escalator to reset.

Check to see if the power battery needs replacing. The Slot Machine USA website explains that a battery issue must be addressed quickly to avoid obtaining any memory loss within the slot machine. Check the hopper to empty the coins and make sure that no jams have occurred.

Examine the slot machine reels to see if they are working correctly. Verify that the wheel is not unplugged before individually inspecting each of the reels. Check the connectors to each of the reels to make sure that none of them are malfunctioning.

Apply lubricating grease to the parts within the slot machine in order to keep all of the parts running smoothly. Reinstall and secure the slot machine mechanism. Align the back panel of the slot machine and screw it into place before testing to make sure that the machine is functioning correctly.


Always unplug the slot machine before starting any repairs.

Things You'll Need

  • Screwdriver
  • Lubricating grease
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About the Author

Shannon Johnson has been a freelance writer since 2008, specializing in health and organic and green-living topics. She practiced law for five years before moving on to work in higher education. She writes about what she lives on a daily basis.