Bally Electromechanical Slot Machine Power Issues

Bally Power Issues

Problem 

Fuse blows on the second or succeeding coins. Electrical arcing occurs in the top right corner of the top unit just before the fuse blows. 

Solution 

Change the b25-925 solenoid in the step up unit in the top unit. This solenoid may have a short in it. It could be causing an arc in the switch in the top right front of the top unit (as you face the machine). If you held this switch down a fuse would blow because of the bad solenoid.


Problem

The machine is dead or totally unresponsive.

Solution 

  • 1. Press reset button (behind the hopper), sometimes there is a bar that runs under the hopper and touches the reset button. Push the reset bar. 
  • 2. check the fuses. 
  • 3. On one model (and probably others), the 847 continental, there is another reset button inside the door on the upper right corner of the cabinet in the front. 

Problem 

The fuse blows, solenoid burns up, or the resister blows.

Solution 

Check the b25-925 solenoid in the hopper and see if it has burned up (looks cooked / black marks). Also see if the resistor nearby is burned up. If one or both of these conditions exist it was probably caused by the brake sticking to the hopper (new style-motor is in bottom of hopper) housing. The rake is sticking to a gummy substance. Scrape off gummy substance and spray with lubricant. Replace solenoid and resistor. 


Problem 

Machine goes dead temporarily and then comes on again during play or during a payout.

Solution 

One of the fuse caps behind the hopper is likely loose. Tighten up all of the fuse caps so they are making correct contact. Also check the line cord is firmly attached where it enters the machine. The line cord consists of three wires. One of these wires may be loose and would need to be re-soldered.


Problem 

Fuse blows as soon as machine is turned on.

Solution 

This could be a short in many different places. The most frequent place is in the two 63 bulb lights in the bottom of the front door which illuminate the pay cup. In another case a loose screw could had fallen out of the top of the front door and rested in behind the coin relay switch. The coin relay switch is on the lower left side of the reel mechanism at the back corner. To easily exclude certain areas of the machine first remove the hopper and the reel mech and disconnect the door and then add each item back one by one, then use an electrical meter to measure where the short is occurring and check the area for burnt wires or connectors that could be causing a short.

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