I’m working on a Gottlieb Atlantis. It’s an EM, but what I’m trying to do is more in the realm of an SS technician’s expertise, so I figured this would be a good forum for my question.
The coin lockout coil on Gottlieb EMs is nearly continuous duty. It only turns off when the score motor is turning. Because it’s on for such long periods of time, it gets very toasty. The crispy brown spot on the underneath of the lower end of the playfield is the long-term result of this heat. At this advanced age in these games’ life, the mechanism does not perform well. It usually makes a racket—vibrating like hell from metal fatigue and other factors—and most mechanical adjustments do little to dampen the noise.
So I picked up a 220-ohm A-16890 coil from PBR and want to correctly half-wave rectify it, making the coin lockout mechanism reliably functional and quiet. I’m following the instructions Clay Harrell wrote on Pinrepair.com for fixing tired Hold and Game Over relays. I was able to use two IN4004 diodes to get the half-wave rectification, but the ripple is bad and the coil struggles to pull in the actuating plate. Clay’s instructions mention that Gottlieb often used a capacitor and resistor to smoothen the ripple.
So I picked up a couple of capacitors and resistors from Mouser. Here is the part number, description, and photo of the capacitor:
Aluminum Electrolytic Capacitors - Axial Leaded Aluminum Electrolytic Capacitors - Axial Leaded 50uF 50V Custom P/N
Here is the same info for the resistor:
WSC00026R000FEB Wirewound Resistors - SMD Wirewound Resistors - SMD 2watts 6ohms 1%
Then here is how my coin lockout mechanism is currently wired with the diodes and A-16890:
Can an expert in here advise me how I can marry the capacitor, resistor, diodes, and coil? Also, do I have the right capacitor and resistor?
Thanks very much.