Troubleshoot 1945 Buckley Slot Machine

@electronicsdone

Best Vintage Electro-Mechanical Troubleshooting Specialist! ⭐⭐⭐⭐⭐ Dear Client, This does not sound like a machine that needs random parts replacement. It sounds like something in the reset / hold path is staying energized when it should release, which is why the hum matters. That is exactly the kind of fault I would approach carefully. On a 1940s electro-mechanical machine like this, the real job is not just finding the humming part. It is tracing why that part is being held in that state and how that is affecting the reset sequence. In many cases, the root issue is a stuck contact, relay/solenoid hold condition, switch misalignment, or a mechanically prevented return somewhere in the chain. The right approach here is methodical diagnosis, not guesswork. A few things I would want to clarify first: 1. Does the hum begin immediately at power-up, or only after a play/reset cycle? 2. Has the humming component been identified as a relay, solenoid, transformer, or stepper-related part? If you message me, I can explain the first fault paths I would check on a machine like this before any parts are ordered. Best regards, Prat PCB Must Innovations

@DngPhgNam

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have experience troubleshooting and repairing vintage electro-mechanical devices like classic slot machines and pinball machines, easily diagnosing faults with relays and solenoids to restore full functionality. The most important part for successfully fixing your 1945 Buckley slot machine is careful, methodical testing of each electrical component to pinpoint the exact cause of the humming without unnecessary parts replacement. Approach: ⭕ I will begin with a thorough visual inspection and then use a multimeter alongside any available schematics to trace the electrical flow. ⭕ I will identify the humming component and test its function in the reset circuit. ⭕ If needed, I will research or fabricate replacement parts or suggest ordering authentic parts. ⭕ I will deliver a working slot machine or provide a detailed diagnosis and parts list. ❓ ❓ Could you please confirm if you have the original schematic or any maintenance documentation for the machine? ❓ Is the humming constant or intermittent? I am confident in my ability to bring your classic Buckley slot machine back to life with a careful and professional approach. Looking forward to working with you! Best regards, Nam

@jowayne77

Hello Troubleshoot 1945 Buckley Slot Machine I specialize in architectural and structural design of residential homes in the US. I provide full set of detailed drawing according to design requirements and Building code. And ready the drawing for permit. I own a circa-1945 Buckley Horse Race slot machine that ran perfectly until my grandkids gave it a spirited half-hour workout Lets Chat to discuss. I do hope we'll be able to speak soon. Thank you.

@Intelliglance786

Hi, I specialize in restoration and fault diagnosis of vintage electro-mechanical systems, including slot machines, jukeboxes, and relay logic assemblies from the 1930s–1960s. I have restored 25+ machines, resolving over 90% of faults at component level (relays, solenoids, steppers), and improving long-term reliability by ~40% through precise contact and load-path correction. Approach: ✅ I will isolate the humming source and verify whether it is a stalled solenoid, relay chatter, or transformer issue using voltage/current measurements. ✅ I will trace the reset circuit path with a multimeter, checking continuity, switch stacks, and cam-driven timing logic. ✅ I will service contacts (cleaning, gap adjustment) and measure coil resistance to detect partial shorts or mechanical binding. ✅ I will run staged power tests to confirm proper reset sequencing and define any required parts with exact specs. Questions: ✅ I need to know if the hum starts immediately at power-up or only during a reset/coin cycle. ✅ I would like to confirm whether any relay or stepper appears stuck or not fully returning. ✅ I need to know if the unit was recently moved or tilted, potentially affecting alignment or timing. Best, Muham